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WO2022103226A1 - Composition de bloc de résine hybride dentaire et procédé de fabrication d'un bloc de résine hybride dentaire à l'aide de cette dernière - Google Patents

Composition de bloc de résine hybride dentaire et procédé de fabrication d'un bloc de résine hybride dentaire à l'aide de cette dernière Download PDF

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Publication number
WO2022103226A1
WO2022103226A1 PCT/KR2021/016659 KR2021016659W WO2022103226A1 WO 2022103226 A1 WO2022103226 A1 WO 2022103226A1 KR 2021016659 W KR2021016659 W KR 2021016659W WO 2022103226 A1 WO2022103226 A1 WO 2022103226A1
Authority
WO
WIPO (PCT)
Prior art keywords
hybrid resin
resin block
dental
block composition
dental hybrid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2021/016659
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English (en)
Korean (ko)
Inventor
이정수
이준강
이창택
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bioden Co Ltd
Original Assignee
Bioden Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bioden Co Ltd filed Critical Bioden Co Ltd
Publication of WO2022103226A1 publication Critical patent/WO2022103226A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/08—Artificial teeth; Making same
    • A61C13/087—Artificial resin teeth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/08—Artificial teeth; Making same
    • A61C13/09—Composite teeth, e.g. front and back section; Multilayer teeth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/70—Tooth crowns; Making thereof
    • A61C5/77—Methods or devices for making crowns
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0012—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy
    • A61C8/0016—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy polymeric material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/60—Preparations for dentistry comprising organic or organo-metallic additives
    • A61K6/62—Photochemical radical initiators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/70—Preparations for dentistry comprising inorganic additives
    • A61K6/71—Fillers

Definitions

  • the present invention relates to a dental hybrid resin block composition and a method for manufacturing the same, and more particularly, in multi-layer lamination of at least three layers or more, color matching between layers is improved, so that esthetics when manufacturing a prosthesis can be improved. It relates to a dental hybrid resin block composition that can be used and a method for manufacturing a dental hybrid resin block using the same.
  • dental restoration methods can be broadly divided into direct restoration and indirect restoration.
  • the direct restoration method is used for small areas that can be restored in the oral cavity, and chemical curing, photocuring, or dual curing (chemical-photocuring proceeds simultaneously) is used as the curing method.
  • a variety of materials and hardening methods can be used to fabricate a representative prosthesis of the indirect restoration type.
  • Dental restoration materials used for direct restoration are used in a very wide range, such as orthodontic treatment or aesthetic dental treatment, in addition to general dental procedures to restore the entire crown and/or to restore the tooth damaged due to caries or fracture of the tooth, or to fix the moving tooth. It is one of the key dental materials used throughout the world.
  • Dental prostheses used in indirect restorations are usually customer-specific materials and are used as substitutes for dental structures.
  • Common dental prostheses include inlays, onlays, full and partial crowns, bridges, and the like.
  • the prosthesis is manufactured by hand by a dentist with specialized knowledge or by a technician who is a professional manufacturer who is skilled in a laboratory that can manufacture it.
  • Dental prostheses using CAD/CAM devices typically use mill blanks, ie, solid blanks from which the prostheses are cut or engraved. Although aesthetics are important for dental prostheses, ceramic materials such as zirconia and glass-ceramic are generally used. Recently, a hybrid ceramic material has been introduced and used. However, the dental hybrid resin block made of ceramic material is very hard, so it has the disadvantages of excessive wear of cutting tools, prolonged production time of dental prostheses, and damage to the opposing teeth due to high hardness. In addition, due to the lack of esthetics, a color similar to natural teeth is implemented by using a build-up method that additionally raises powder of glass powder when manufacturing a dental prosthesis, but it is difficult and difficult to manufacture by a skilled technician. there is.
  • Republic of Korea Patent Publication No. 10-2121353 has proposed a manufacturing process in which a multi-layer dental mill blank is laminated by pressing it on a mold at different pressures for each layer.
  • the filling and pressing process is repeated for each layer in order to obtain a plurality of layers, the manufacturing efficiency is remarkably reduced.
  • Japanese Patent Laid-Open No. 2014-161440 proposes a method for manufacturing a dental mill blank having a laminate structure by repeating the filling and polymerization process of an unpolymerized composite resin paste for each layer in order to obtain a dental mill blank having a laminate structure.
  • the filling and polymerization processes are repeatedly performed, the number of processes increases when the number of layers is increased, so that the manufacturing efficiency is remarkably reduced.
  • Japanese Patent Application Laid-Open No. 2017-113224 proposes a method for manufacturing a dental mill blank having a laminate structure by sequentially stacking unpolymerized pastes having different color ( ⁇ E) differences to make a laminate.
  • ⁇ E color difference between the layers
  • due to the color difference between the layers when the color tone of the laminated interface is exposed when manufacturing the dental prosthesis, there is a disadvantage in that it lacks aesthetics.
  • the problem to be solved by the present invention is a dental hybrid resin block composition that can have excellent esthetics when manufacturing a prosthesis by improving the color matching of the interlayer interface in multi-layer lamination of at least three or more layers, and a dental hybrid resin using the same
  • An object of the present invention is to provide a method for manufacturing a block.
  • the present invention provides a dental hybrid resin block composition for producing a dental hybrid resin block having a laminated structure of at least three layers by laminating each layer having a different color
  • the dental hybrid resin block composition is an unsaturated double monomers or oligomers comprising linkages; a polymerization initiator for initiating photopolymerization or thermal polymerization; inorganic or organic fillers; and a pigment for color expression, having a viscosity in the range of 40,000 mPa ⁇ s to 70,000 mPa ⁇ s, and a dental hybrid resin block for forming layers of different colors in the dental hybrid resin block of the laminated structure
  • the compositions provide a dental hybrid resin block composition, characterized in that it has different viscosities and different colors.
  • Each layer having a different color is laminated to prepare a dental hybrid resin block having a laminate structure of at least three or more layers.
  • the dental hybrid resin block composition laminated on the has different viscosities, the dental hybrid resin block composition laminated on the lower part, the dental hybrid resin block composition laminated in the middle, and the dental hybrid resin block composition laminated on the upper part in this order A low viscosity is preferable.
  • Each layer having a different color is laminated to prepare a dental hybrid resin block having a laminate structure of at least three or more layers.
  • the dental hybrid resin block composition layered on the has different colors, the dental hybrid resin block composition stacked on the bottom, the dental hybrid resin block composition stacked on the middle, and the dental hybrid resin block composition stacked on the top in order It is preferable to express a light color from a light color to a dark color or a dark color to a light color.
  • the dental hybrid resin block composition may further include a polymerization retardant.
  • the present invention (a) a monomer or oligomer containing an unsaturated double bond; a polymerization initiator for initiating photopolymerization or thermal polymerization; inorganic or organic fillers; and a first dental hybrid resin block composition, a second dental hybrid resin block composition, and a third dental hybrid resin block composition including a pigment for color expression and having a viscosity ranging from 40,000 mPa ⁇ s to 70,000 mPa ⁇ s Preparing, (b) rotating the mold while filling the mold with the first dental hybrid resin block composition to flatten the first dental hybrid resin block composition; (c) the first dental hybrid resin block composition Rotating the mold while filling the second dental hybrid resin block composition in the mold filled with the hybrid resin block composition for use in a mold to flatten the second dental hybrid resin block composition, (d) the second dental Rotating the mold while filling the mold filled with the hybrid resin block composition for dental use with the third hybrid resin block composition for dental use so that the third hybrid resin block composition for dental use is flattened
  • the first dental hybrid resin block composition, the second dental hybrid resin block composition, and the third dental hybrid resin block composition have different viscosities, and the first dental hybrid resin block composition, the second dental It is preferable that the viscosity is low in the order of the hybrid resin block composition for use and the third dental hybrid resin block composition.
  • the first dental hybrid resin block composition, the second dental hybrid resin block composition, and the third dental hybrid resin block composition have different colors, and the first dental hybrid resin block composition, the second dental It is preferable to express a light color from a light color to a dark color or from a dark color in the order of the hybrid resin block composition for dental use and the third dental hybrid resin block composition.
  • steps (b) to (d) it is preferable to heat the mold to a temperature of 30 to 60° C. lower than the temperature at which the polymerization takes place.
  • the polymerization may include thermal polymerization, and the thermal polymerization may include polymerization by first heating to a temperature of 40 to 100 °C and secondary heating to a temperature of 100 to 200 °C.
  • the first dental hybrid resin block composition, the second dental hybrid resin block composition, and the third dental hybrid resin block composition may further include a polymerization retardant.
  • the dental hybrid resin block composition has a suitable viscosity, so that a dental hybrid resin block having a laminate structure can be manufactured.
  • the productivity is excellent due to the simplification and generalization of the manufacturing process, and when applied as a prosthesis, the harmony with the surrounding teeth is improved, thereby providing excellent esthetics.
  • any one component in the detailed description or claims of the invention, it is not construed as being limited to only the component, unless otherwise stated, and other components are further added. It should be understood as being able to include
  • a dental hybrid resin block composition is a dental hybrid resin block composition for manufacturing a dental hybrid resin block having a laminated structure of at least three layers by stacking each layer having a different color.
  • the dental hybrid resin block composition is a monomer or oligomer containing an unsaturated double bond; a polymerization initiator for initiating photopolymerization or thermal polymerization; inorganic or organic fillers; and a pigment for color expression, having a viscosity in the range of 40,000 mPa ⁇ s to 70,000 mPa ⁇ s, and a dental hybrid resin block for forming layers of different colors in the dental hybrid resin block of the laminated structure
  • the compositions have different viscosities and different colors.
  • Each layer having a different color is laminated to prepare a dental hybrid resin block having a laminate structure of at least three or more layers.
  • the dental hybrid resin block composition laminated on the has different viscosities, the dental hybrid resin block composition laminated on the lower part, the dental hybrid resin block composition laminated in the middle, and the dental hybrid resin block composition laminated on the upper part in this order A low viscosity is preferable.
  • Each layer having a different color is laminated to prepare a dental hybrid resin block having a laminate structure of at least three or more layers.
  • the dental hybrid resin block composition laminated on the has different colors, the dental hybrid resin block composition laminated on the lower part, the dental hybrid resin block composition laminated in the middle, and the dental hybrid resin block composition laminated on the upper part in this order It is preferable to express a light color from a light color to a dark color or a dark color to a light color.
  • the dental hybrid resin block composition may further include a polymerization retardant.
  • a method for producing a dental hybrid resin block comprises: (a) a monomer or oligomer containing an unsaturated double bond; a polymerization initiator for initiating photopolymerization or thermal polymerization; inorganic or organic fillers; and a first dental hybrid resin block composition, a second dental hybrid resin block composition, and a third dental hybrid resin block composition including a pigment for color expression and having a viscosity ranging from 40,000 mPa ⁇ s to 70,000 mPa ⁇ s Preparing, (b) rotating the mold while filling the mold with the first dental hybrid resin block composition to flatten the first dental hybrid resin block composition; (c) the first dental hybrid resin block composition Rotating the mold while filling the second dental hybrid resin block composition in the mold filled with the hybrid resin block composition for use in a mold to flatten the second dental hybrid resin block composition, (d) the second dental Rotating the mold while filling the mold filled with the hybrid resin block composition for dental use with the third hybrid resin block composition for dental use
  • the first dental hybrid resin block composition, the second dental hybrid resin block composition, and the third dental hybrid resin block composition have different viscosities, and the first dental hybrid resin block composition, the second dental It is preferable that the viscosity is low in the order of the hybrid resin block composition for use and the third dental hybrid resin block composition.
  • the first dental hybrid resin block composition, the second dental hybrid resin block composition, and the third dental hybrid resin block composition have different colors, and the first dental hybrid resin block composition, the second dental It is preferable to express a light color from a light color to a dark color or from a dark color in the order of the hybrid resin block composition for dental use and the third dental hybrid resin block composition.
  • steps (b) to (d) it is preferable to heat the mold to a temperature of 30 to 60° C. lower than the temperature at which the polymerization takes place.
  • the polymerization may include thermal polymerization, and the thermal polymerization may include polymerization by first heating to a temperature of 40 to 100 °C and secondary heating to a temperature of 100 to 200 °C.
  • the first dental hybrid resin block composition, the second dental hybrid resin block composition, and the third dental hybrid resin block composition may further include a polymerization retardant.
  • a dental hybrid resin block composition according to a preferred embodiment of the present invention is a dental hybrid resin block composition for producing a dental hybrid resin block having a laminated structure of at least three layers by stacking each layer having a different color. .
  • the dental hybrid resin block composition includes a monomer or oligomer containing an unsaturated double bond, a polymerization initiator for initiating photopolymerization or thermal polymerization, an inorganic or organic filler, and a pigment for color expression.
  • the dental hybrid resin block composition may further include a polymerization retardant.
  • the polymerization retardant may include, for example, butylhydroxy toluene (BHT).
  • the monomer or oligomer containing the unsaturated double bond is not particularly limited as long as it can exhibit mechanical strength as a dental material and can be polymerized, and a methyl methacrylate (MMA)-based material may be preferably used.
  • MMA methyl methacrylate
  • the methyl methacrylate (MMA)-based material is 2,2-bis-(4-(2-hydroxy-3 methacryloyloxypropoxy)phenyl)propane (Bis-GMA), ethylene glycol dimethacrylate (EGDMA), triethylene glycol dimethacrylate (TEGDMA), ethoxylate bisphenol A dimethacrylate (Bis-EMA), urethane dimethacrylate (UDMA), dipentaerythritol pentaacrylate monophosphate (dipentaerythritol pentaacrylate monophosphate, PENTA), 2-hydrozyethyl methacrylate (HEMA), polyalkenic acid, biphenyl dimethacrylate (BPDM), glycerol phosphate di It may be methacrylate (glycerol phosphate dimethacrylate, GPDM) or a mixture thereof.
  • Bis-GMA 2,2-bis-(4-(2-hydroxy-3 methacryloyloxypropoxy)pheny
  • Bis-GMA 2,2-bis-(4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl)propane
  • Bis -EMA ethoxylate bisphenol A dimethacrylate
  • TEGDMA triethylene glycol dimethacrylate
  • UDMA urethane dimethacrylate
  • the content of the monomer or oligomer containing an unsaturated double bond may vary depending on the field and purpose of its use, and is not particularly limited. However, if the content of the monomer or oligomer is too small, it is difficult to form a desired polymer, and mixing with the inorganic or organic filler is not easy. .
  • the monomer or oligomer is preferably contained in an amount of 10 to 99% by weight, more preferably 10 to 90% by weight, based on the total weight of the composition.
  • composition and content of the monomer or oligomer containing the unsaturated double bond plays an important role in the degree of dispersion of the composition during polymerization of the dental hybrid resin block composition, and is an important factor in determining abrasion resistance and workability.
  • the monomer or oligomer is 2,2-bis-(4-(2-hydroxy-3- Methacryloyloxypropoxy)phenyl)propane (Bis-GMA), ethoxylate bisphenol A dimethacrylate (Bis-EMA), triethyleneglycol dimethacrylate (TEGDMA) and urethane dimethacrylate (UDMA) ),
  • the content of Bis-GMA may be 5 to 15% by weight based on the total weight of the composition, and the contents of TEGDMA, UDMA, and Bis-EMA may be 1 to 15% by weight, respectively.
  • the polymerization initiator may be variously performed by a cation formation mechanism, an anion formation mechanism, a radical formation mechanism, etc. depending on the type of catalyst used in the polymerization reaction, and the double radical formation mechanism is most commonly used. According to these polymerization mechanisms, the polymerization reaction may be conducted as a photopolymerization reaction, a thermal polymerization reaction, or the like.
  • the photopolymerization reaction is performed by a photopolymerization initiator activated by visible light to initiate a polymerization reaction of a monomer, and the photopolymerization initiator is typically an ⁇ -diketone-based carbonyl compound photopolymerization initiator such as camphor quinone; and an acylphosphine oxide-based photopolymerization initiator.
  • the photopolymerization initiator generally uses a hydrogen donor as a cocatalyst, and a tertiary amine-based catalyst mainly acts together. Specific examples of the photopolymerization initiators and cocatalysts are known in the art, and thus a description thereof will be omitted.
  • radicals are formed by heat including peroxide such as benzoyl peroxide to initiate polymerization.
  • the polymerization initiator for this polymerization reaction may be included in the composition within a range that does not affect the physical properties of the product while inducing the polymerization reaction, and "catalyst amount" means this content range, and the types and contents of other components of the composition and It may vary depending on the type of catalyst.
  • filler examples include inorganic fillers, organic fillers, and stabilizers.
  • the inorganic filler is, for example, amorphous synthetic silica, crystalline natural silica, barium aluminum silicate, kaolin, talc, etc., or radio-opaque glass powder such as strontium aluminum silicate, or other acid reactive fillers, nano zirconia fillers, etc.
  • amorphous synthetic silica crystalline natural silica
  • barium aluminum silicate barium aluminum silicate
  • kaolin kaolin
  • talc talc
  • radio-opaque glass powder such as strontium aluminum silicate, or other acid reactive fillers, nano zirconia fillers, etc.
  • it is not limited thereto, and in some cases, it may be used in the form of a mixture of two or more thereof.
  • inorganic fillers are hydrophilic and have poor compatibility with the hydrophobic MMA-based monomer
  • affinity with the monomers can be increased by including a binder component or surface treatment of the inorganic filler with a silane coupling agent.
  • silane coupling agent as such a hydrophobic surface treatment agent for the inorganic filler are known in the art, and thus a detailed description thereof will be omitted.
  • the organic filler is prepared in the form of a powder after synthesizing the monomers constituting the matrix after polymerization in the dental hybrid resin block composition or monomers compatible with it through bulk polymerization, emulsion polymerization, suspension polymerization, etc., so that the average particle size is 0.005 A particle size of 100 ⁇ m may be used.
  • the mechanical strength may be increased by increasing the curing molecular weight of the monomer without adding an inorganic or organic filler.
  • the filler may be contained in an amount of 40 to 90% by weight based on the total weight of the composition in consideration of the content relationship with the MMA-based monomer.
  • the inorganic filler or organic filler preferably has an average particle diameter of 0.005 to 100 ⁇ m. If the average particle diameter is smaller than 0.005 ⁇ m, uniform dispersion in the composition and increase in viscosity may occur due to cohesive force between the particles. . On the other hand, if it is larger than 100 ⁇ m, the texture and viscosity of the dental hybrid resin block composition are reduced, so that workability is deteriorated, and when large particles are lost due to abrasion after curing, there may be a problem in that the lubricity is reduced.
  • the stabilizer may be a phenol-based and/or phosphate-based stabilizer.
  • the dental hybrid resin block compositions for forming layers of different colors in the dental hybrid resin block of the laminated structure have different viscosities and different colors.
  • the dental hybrid resin block composition preferably has a viscosity in the range of 40,000 mPa ⁇ s to 70,000 mPa ⁇ s, more preferably in the range of 45,000 m Pa ⁇ s to 65,000 m Pa ⁇ s.
  • a viscosity in the range of 40,000 mPa ⁇ s to 70,000 mPa ⁇ s, more preferably in the range of 45,000 m Pa ⁇ s to 65,000 m Pa ⁇ s.
  • lamination according to viscosity lamination of a small size mold is not difficult, but in lamination of a large size such as a disk, even if the composition has flowability, planarization operation may remain a problem. Therefore, it is preferable to heat the mold to a temperature at which the unpolymerized composition does not polymerize during filling, and also rotate the mold to proceed with planarization of the unpolymerized composition by centrifugal force.
  • Each layer having a different color is laminated to prepare a dental hybrid resin block having a laminate structure of at least three or more layers.
  • the dental hybrid resin block composition laminated on the has different viscosities, and the dental hybrid resin block composition laminated on the lower part, the dental hybrid resin block composition laminated in the middle, and the dental hybrid resin block composition laminated on the upper part in this order A low viscosity is preferable.
  • Each layer having a different color is laminated to prepare a dental hybrid resin block having a laminate structure of at least three or more layers.
  • the dental hybrid resin block composition layered on the has different colors, the dental hybrid resin block composition stacked on the bottom, the dental hybrid resin block composition stacked on the middle, and the dental hybrid resin block composition stacked on the top in order It is preferable to express a light color from a light color to a dark color or a dark color to a light color.
  • a monomer or oligomer containing an unsaturated double bond a polymerization initiator for initiating photopolymerization or thermal polymerization; inorganic or organic fillers;
  • a first dental hybrid resin block composition a second dental hybrid resin block composition, and a third dental hybrid resin block composition including a pigment for color expression and having a viscosity ranging from 40,000 mPa ⁇ s to 70,000 mPa ⁇ s do.
  • the first dental hybrid resin block composition, the second dental hybrid resin block composition, and the third dental hybrid resin block composition are for dentistry having a laminated structure of at least three or more layers in which each layer having a different color is laminated. It is a dental hybrid resin block composition for producing a hybrid resin block.
  • the first dental hybrid resin block composition, the second dental hybrid resin block composition, and the third dental hybrid resin block composition are for initiating photopolymerization or thermal polymerization with a monomer or oligomer containing an unsaturated double bond. It contains a polymerization initiator, an inorganic or organic filler, and a pigment
  • the first dental hybrid resin block composition, the second dental hybrid resin block composition, and the third dental hybrid resin block composition may further include a polymerization retardant.
  • the polymerization retardant may include, for example, butylhydroxy toluene (BHT).
  • the monomer or oligomer containing the unsaturated double bond is not particularly limited as long as it can exhibit mechanical strength as a dental material and can be polymerized, and a methyl methacrylate (MMA)-based material may be preferably used.
  • MMA methyl methacrylate
  • the methyl methacrylate (MMA)-based material is 2,2-bis-(4-(2-hydroxy-3 methacryloyloxypropoxy)phenyl)propane (Bis-GMA), ethylene glycol dimethacrylate (EGDMA), triethylene glycol dimethacrylate (TEGDMA), ethoxylate bisphenol A dimethacrylate (Bis-EMA), urethane dimethacrylate (UDMA), dipentaerythritol pentaacrylate monophosphate (dipentaerythritol pentaacrylate monophosphate, PENTA), 2-hydrozyethyl methacrylate (HEMA), polyalkenic acid, biphenyl dimethacrylate (BPDM), glycerol phosphate di It may be methacrylate (glycerol phosphate dimethacrylate, GPDM) or a mixture thereof.
  • Bis-GMA 2,2-bis-(4-(2-hydroxy-3 methacryloyloxypropoxy)pheny
  • Bis-GMA 2,2-bis-(4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl)propane
  • Bis -EMA ethoxylate bisphenol A dimethacrylate
  • TEGDMA triethylene glycol dimethacrylate
  • UDMA urethane dimethacrylate
  • the content of the monomer or oligomer containing an unsaturated double bond may vary depending on the field and purpose of its use, and is not particularly limited. However, if the content of the monomer or oligomer is too small, it is difficult to form a desired polymer, and mixing with the inorganic or organic filler is not easy. .
  • the monomer or oligomer is preferably contained in an amount of 10 to 99% by weight, more preferably 10 to 90% by weight, based on the total weight of the composition.
  • composition and content of the monomer or oligomer containing the unsaturated double bond plays an important role in the dispersion of the composition during polymerization of the dental hybrid resin block composition, and is an important factor in determining wear resistance and workability.
  • the monomer or oligomer in the dental hybrid resin block composition is 2,2-bis-(4-(2-hydroxy-3-meta) in consideration of desirable mechanical properties, low abrasion resistance, and excellent operability.
  • Acryloyloxypropoxy)phenyl)propane Bis-GMA
  • ethoxylate bisphenol A dimethacrylate Bis-EMA
  • TEGDMA triethyleneglycol dimethacrylate
  • UDMA urethane dimethacrylate
  • the polymerization initiator may be variously performed by a cation formation mechanism, an anion formation mechanism, a radical formation mechanism, etc. depending on the type of catalyst used in the polymerization reaction, and the double radical formation mechanism is most commonly used. According to these polymerization mechanisms, the polymerization reaction may be conducted as a photopolymerization reaction, a thermal polymerization reaction, or the like.
  • the photopolymerization reaction is performed by a photopolymerization initiator activated by visible light to initiate a polymerization reaction of a monomer, and the photopolymerization initiator is typically an ⁇ -diketone-based carbonyl compound photopolymerization initiator such as camphor quinone; and an acylphosphine oxide-based photopolymerization initiator.
  • the photopolymerization initiator generally uses a hydrogen donor as a co-catalyst, and a tertiary amine-based catalyst mainly acts together. Specific examples of the photopolymerization initiators and cocatalysts are known in the art, and thus a description thereof will be omitted.
  • radicals are formed by heat including peroxide such as benzoyl peroxide to initiate polymerization.
  • the polymerization initiator for this polymerization reaction may be included in the composition within a range that does not affect the physical properties of the product while inducing the polymerization reaction, and "catalyst amount" means this content range, and the types and contents of other components of the composition and It may vary depending on the type of catalyst.
  • filler examples include inorganic fillers, organic fillers, and stabilizers.
  • the inorganic filler is, for example, amorphous synthetic silica, crystalline natural silica, barium aluminum silicate, kaolin, talc, etc., or radio-opaque glass powder such as strontium aluminum silicate, or other acid reactive fillers, nano zirconia fillers, etc.
  • amorphous synthetic silica crystalline natural silica
  • barium aluminum silicate barium aluminum silicate
  • kaolin kaolin
  • talc talc
  • radio-opaque glass powder such as strontium aluminum silicate, or other acid reactive fillers, nano zirconia fillers, etc.
  • it is not limited thereto, and in some cases, it may be used in the form of a mixture of two or more thereof.
  • inorganic fillers are hydrophilic and have poor compatibility with the hydrophobic MMA-based monomer
  • affinity with the monomers can be increased by including a binder component or surface treatment of the inorganic filler with a silane coupling agent.
  • silane coupling agent as such a hydrophobic surface treatment agent for the inorganic filler are known in the art, and thus a detailed description thereof will be omitted.
  • the organic filler is prepared in the form of a powder after synthesizing the monomers constituting the matrix after polymerization in the dental hybrid resin block composition or monomers compatible with it through bulk polymerization, emulsion polymerization, suspension polymerization, etc., so that the average particle diameter is 0.005 A particle size of 100 ⁇ m may be used.
  • the mechanical strength may be increased by increasing the curing molecular weight of the monomer without adding an inorganic or organic filler.
  • the filler may be contained in an amount of 40 to 90% by weight based on the total weight of the composition in consideration of the content relationship with the MMA-based monomer.
  • the inorganic filler or organic filler preferably has an average particle diameter of 0.005 to 100 ⁇ m. If the average particle diameter is smaller than 0.005 ⁇ m, uniform dispersion in the composition and increase in viscosity may occur due to cohesive force between the particles. . On the other hand, if it is larger than 100 ⁇ m, the texture and viscosity of the dental hybrid resin block composition are reduced, so that workability is deteriorated, and when large particles are lost due to abrasion after curing, there may be a problem in that the lubricity is reduced.
  • the stabilizer may be a phenol-based and/or phosphate-based stabilizer.
  • the first dental hybrid resin block composition, the second dental hybrid resin block composition, and the third dental hybrid resin block composition have a viscosity in the range of 40,000 mPa ⁇ s to 70,000 mPa ⁇ s, more preferably 45,000 mPa ⁇ s It is preferred to achieve a viscosity in the range of s to 65,000 m Pa ⁇ s. When the viscosity is too high, it is difficult to form a shape, and when the viscosity is too low, workability is deteriorated.
  • the mold While the first dental hybrid resin block composition is filled in the mold, the mold is rotated so that the first dental hybrid resin block composition is planarized. It is preferable to rotate the mold at 50 to 200 rpm for the planarization. For the planarization, it is preferable to heat the mold to a temperature of 30 to 60° C. lower than the temperature at which the polymerization takes place.
  • the second dental hybrid resin block composition is flattened by rotating the mold while the second dental hybrid resin block composition is filled in the mold filled with the first dental hybrid resin block composition. It is preferable to rotate the mold at 50 to 200 rpm for the planarization. For the planarization, it is preferable to heat the mold to a temperature of 30 to 60° C. lower than the temperature at which the polymerization takes place.
  • the mold While the third dental hybrid resin block composition is filled in the mold filled with the second dental hybrid resin block composition, the mold is rotated so that the third dental hybrid resin block composition is planarized. It is preferable to rotate the mold at 50 to 200 rpm for the planarization. For the planarization, it is preferable to heat the mold to a temperature of 30 to 60° C. lower than the temperature at which the polymerization takes place.
  • the fourth dental hybrid resin block composition may be flattened by rotating the mold while the third dental hybrid resin block composition is filled in the mold filled with the fourth dental hybrid resin block composition.
  • the fifth dental hybrid resin block composition may be flattened by rotating the mold while the fifth dental hybrid resin block composition is filled in the mold filled with the fourth dental hybrid resin block composition.
  • the viscosity of the fourth and fifth dental hybrid resin block compositions is preferably lower than that of the third dental hybrid resin block composition.
  • the color of the fourth and fifth dental hybrid resin block compositions is appropriately selected as a color desired by the operator.
  • the dental hybrid resin block compositions for forming layers of different colors have different viscosities and different colors. More specifically, the first dental hybrid resin block composition, the second dental hybrid resin block composition, and the third dental hybrid resin block composition have different viscosities and different colors.
  • the mold While filling, the mold is heated and rotated to flatten the uncured dental hybrid resin block composition by centrifugal force to obtain a laminated structure.
  • the process before polymerization is completed by rotating the mold for a certain period of time to remove air bubbles that may be incorporated during filling of the mold and to improve color matching between layers.
  • the mold is not particularly limited in shape, material, capacity, and the like.
  • the shape of the container may be a rectangular parallelepiped or a cylinder having an upper cover and an upper open type.
  • the material of the container may include metal, plastic, entra, ceramics, ceramics, aluminum, rubber, and the like, and is preferably a metal or a thermally conductive material such as aluminum.
  • Each layer having a different color is laminated to prepare a dental hybrid resin block having at least three or more layers of a first dental hybrid resin block composition, which is laminated on the lower part, and a second dental hybrid resin that is laminated in the middle
  • the block composition, the third dental hybrid resin block composition laminated on the upper part has different viscosities, the first dental hybrid resin block composition laminated on the lower part, the second dental hybrid resin block composition laminated on the middle, the upper part It is preferable that the viscosity is low in the order of the third dental hybrid resin block composition to be laminated.
  • Each layer having a different color is laminated to prepare a dental hybrid resin block having at least three or more layers of a first dental hybrid resin block composition, which is laminated on the lower part, and a second dental hybrid resin that is laminated in the middle
  • the block composition, the third dental hybrid resin block composition laminated on the upper part has different colors, the first dental hybrid resin block composition laminated on the lower part, the second dental hybrid resin block composition laminated on the middle, the upper part It is preferable to express a light color from a light color to a dark color or from a dark color in the order of the third dental hybrid resin block composition to be laminated.
  • the first dental hybrid resin block composition, the second dental hybrid resin block composition, and the third dental hybrid resin block composition filled in the mold are polymerized.
  • the polymerization may include photopolymerization or thermal polymerization.
  • the first dental hybrid resin block composition, the second dental hybrid resin block composition, and the third dental hybrid resin block composition are sequentially stacked and polymerized.
  • thermal polymerization polymerization is preferably performed at a temperature of 60 to 200°C. More preferably, polymerization is carried out by primary heating at a temperature of 40 to 100°C and secondary heating at a temperature of 100 to 200°C. Since it is a laminated structure with different viscosities, if quenched after curing is completed, interlayer stress may occur and cracks may occur, so the temperature is slowly lowered to complete polymerization.
  • the dental hybrid resin block prepared in this way is composed of at least three layers in a laminated structure, and the laminate is made by laminating the dental hybrid resin block composition from high to low viscosity and from light to dark or from dark to light in color. to obtain a laminated structure.
  • the lamination of the laminated structure is preferably at least 3 layers or more and not more than 5 layers at most. More preferably, it is good to maintain 3 to 4 layers. If the layer is less than 3 layers, it is difficult to realize natural teeth, and if the layer is 5 layers or more, the manufacturing method is complicated and production efficiency is lowered.
  • a dental hybrid resin block composition (A1 shade) was prepared with the composition shown in Table 1 below. 70 g of barium aluminosilicate was added, 0.003 g of red iron oxide was added, 0.007 g of yellow iron oxide was added, 0.001 g of black iron oxide was added, and 0.01 g of titanium dioxide was added, and bright colored dental hybrid resin block A composition (A1 shade) was prepared.
  • Dental hybrid resin block composition (A1 shade) monomer or oligomer Ethoxylate Bistenol
  • a Dimethacrylate (Bis-EMA) 8.5 Triethylene glycol dimethacrylate (TEGDMA) 6 Urethane Dimethacrylate (UDMA) 7 inorganic filler Barium Aluminosilicate (0.7 ⁇ m) 70 Amorphous Synthetic Silica (20nm) 7 polymerization initiator Benzoyl Peroxide (BPO) One polymerization retardant Butylhydroxy toluene (BHT) 0.5 pigment iron oxide (red) 0.003 Iron oxide (yellow) 0.007 Iron oxide (black) 0.001 Titanium dioxide (TIO 2 ) 0.01
  • a dental hybrid resin block composition (A2 shade) was prepared with the composition shown in Table 2 below. 65 g of barium aluminosilicate was added, 0.007 g of red iron oxide was added, 0.012 g of yellow iron oxide was added, 0.005 g of black iron oxide was added, and 0.01 g of titanium dioxide was added, and a medium color dental hybrid resin block A composition (A2 shade) was prepared.
  • Dental hybrid resin block composition (A2 shade) monomer or oligomer Ethoxylate Bistenol
  • a Dimethacrylate (Bis-EMA) 8.5 Triethylene glycol dimethacrylate (TEGDMA) 6 Urethane Dimethacrylate (UDMA) 7 inorganic filler Barium Aluminosilicate (0.7 ⁇ m) 65 Amorphous Synthetic Silica (20nm) 7 polymerization initiator Benzoyl Peroxide (BPO) One polymerization retardant Butylhydroxy toluene (BHT) 0.5 pigment iron oxide (red) 0.007 Iron oxide (yellow) 0.012 Iron oxide (black) 0.005 Titanium dioxide (TIO 2 ) 0.01
  • a dental hybrid resin block composition (A3 shade) was prepared with the composition shown in Table 3 below. 60 g of barium aluminosilicate was added, 0.015 g of red iron oxide was added, 0.020 g of yellow iron oxide was added, 0.01 g of black iron oxide was added, and 0.01 g of titanium dioxide was added, and a dark colored dental hybrid resin block. A composition (A3 shade) was prepared.
  • Dental hybrid resin block composition (A3 shade) monomer or oligomer Ethoxylate Bistenol
  • a Dimethacrylate (Bis-EMA) 8.5 Triethylene glycol dimethacrylate (TEGDMA) 6 Urethane Dimethacrylate (UDMA) 7 inorganic filler Barium Aluminosilicate (0.7 ⁇ m) 60 Amorphous Synthetic Silica (20nm) 7 polymerization initiator Benzoyl Peroxide (BPO) One polymerization retardant Butylhydroxy toluene (BHT) 0.5 pigment iron oxide (red) 0.015 Iron oxide (yellow) 0.020 Iron oxide (black) 0.010 Titanium dioxide (TIO 2 ) 0.01
  • a dental hybrid resin block composition (A1 shade) prepared according to Example 1 in a wide cylindrical mold having a diameter of 102 mm and a height of 12 mm, a dental hybrid resin block composition prepared according to Example 1 (A2 shade) ), the dental hybrid resin block composition (A3 shade) prepared according to Example 1 was sequentially filled with a thickness of 4 mm.
  • the mold was heated to 35° C., and the mold was rotated at 140 rpm to apply a planarization process to each layer to obtain a laminated structure before polymerization.
  • the obtained laminated structure was polymerized at 60° C. for 3 hours and at 120° C. for 5 hours, and then slowly cooled to room temperature to finish polymerization to prepare a laminated dental hybrid resin block.
  • a dental hybrid resin block composition (A1 shade) was prepared with the composition shown in Table 4 below. 70 g of barium aluminosilicate was added, 0.003 g of red iron oxide was added, 0.007 g of yellow iron oxide was added, 0.001 g of black iron oxide was added, and 0.01 g of titanium dioxide was added, and bright colored dental hybrid resin block A composition (A1 shade) was prepared.
  • Dental hybrid resin block composition (A1 shade) monomer or oligomer Ethoxylate Bistenol
  • a Dimethacrylate (Bis-EMA) 8.5 Triethylene glycol dimethacrylate (TEGDMA) 6 Urethane Dimethacrylate (UDMA) 7 inorganic filler Barium Aluminosilicate (0.7 ⁇ m) 70 Amorphous Synthetic Silica (20nm) 7 polymerization initiator Benzoyl Peroxide (BPO) One polymerization retardant Butylhydroxy toluene (BHT) 0.5 pigment iron oxide (red) 0.003 Iron oxide (yellow) 0.007 Iron oxide (black) 0.001 Titanium dioxide (TIO 2 ) 0.01
  • a dental hybrid resin block composition (A2 shade) was prepared with the composition shown in Table 5 below. 70 g of barium aluminosilicate was added, 0.007 g of red iron oxide was added, 0.012 g of yellow iron oxide was added, 0.005 g of black iron oxide was added, and 0.01 g of titanium dioxide was added, and a medium color dental hybrid resin block A composition (A2 shade) was prepared.
  • Dental hybrid resin block composition (A2 shade) monomer or oligomer Ethoxylate Bistenol
  • a Dimethacrylate (Bis-EMA) 8.5 Triethylene glycol dimethacrylate (TEGDMA) 6 Urethane Dimethacrylate (UDMA) 7 inorganic filler Barium Aluminosilicate (0.7 ⁇ m) 70 Amorphous Synthetic Silica (20nm) 7 polymerization initiator Benzoyl Peroxide (BPO) One polymerization retardant Butylhydroxy toluene (BHT) 0.5 pigment iron oxide (red) 0.007 Iron oxide (yellow) 0.012 Iron oxide (black) 0.005 Titanium dioxide (TIO 2 ) 0.01
  • a dental hybrid resin block composition (A3 shade) was prepared with the composition shown in Table 6 below. 70 g of barium aluminosilicate was added, 0.015 g of red iron oxide was added, 0.020 g of yellow iron oxide was added, 0.010 g of black iron oxide was added, and 0.01 g of titanium dioxide was added, and a dark colored dental hybrid resin block. A composition (A3 shade) was prepared.
  • Dental hybrid resin block composition (A3 shade) monomer or oligomer Ethoxylate Bistenol
  • a Dimethacrylate (Bis-EMA) 8.5 Triethylene glycol dimethacrylate (TEGDMA) 6 Urethane Dimethacrylate (UDMA) 7 inorganic filler Barium Aluminosilicate (0.7 ⁇ m) 70 Amorphous Synthetic Silica (20nm) 7 polymerization initiator Benzoyl Peroxide (BPO) One polymerization retardant Butylhydroxy toluene (BHT) 0.5 pigment iron oxide (red) 0.015 Iron oxide (yellow) 0.020 Iron oxide (black) 0.010 Titanium dioxide (TIO 2 ) 0.01
  • a dental hybrid resin block composition (A1 shade), a dental hybrid resin block composition (A2 shade), and a dental hybrid resin block composition (A3 shade) were sequentially placed in a wide cylindrical mold with a diameter of 102 mm and a height of 12 mm. Each was filled with a thickness of 4 mm. During filling, the mold was heated to 35° C., and the mold was rotated at 140 rpm to apply a planarization process to each layer to obtain a laminated structure before polymerization. The obtained laminated structure was polymerized at 60° C. for 3 hours and at 120° C. for 5 hours, and then slowly cooled to room temperature to finish polymerization to prepare a laminated dental hybrid resin block.
  • a dental hybrid resin block composition (A1 shade) was prepared with the composition shown in Table 7 below. 70 g of barium aluminosilicate was added, 0.003 g of red iron oxide was added, 0.007 g of yellow iron oxide was added, 0.001 g of black iron oxide was added, and 0.01 g of titanium dioxide was added, and bright colored dental hybrid resin block A composition (A1 shade) was prepared.
  • Dental hybrid resin block composition (A1 shade) monomer or oligomer Ethoxylate Bistenol
  • a Dimethacrylate (Bis-EMA) 8.5 Triethylene glycol dimethacrylate (TEGDMA) 6 Urethane Dimethacrylate (UDMA) 7 inorganic filler Barium Aluminosilicate (0.7 ⁇ m) 70 Amorphous Synthetic Silica (20nm) 7 polymerization initiator Benzoyl Peroxide (BPO) One polymerization retardant Butylhydroxy toluene (BHT) 0.5 pigment iron oxide (red) 0.003 Iron oxide (yellow) 0.007 Iron oxide (black) 0.001 Titanium dioxide (TIO 2 ) 0.01
  • a dental hybrid resin block composition (A2 shade) was prepared with the composition shown in Table 8 below. 65 g of barium aluminosilicate was added, 0.007 g of red iron oxide was added, 0.012 g of yellow iron oxide was added, 0.005 g of black iron oxide was added, and 0.01 g of titanium dioxide was added, and a medium color dental hybrid resin block A composition (A2 shade) was prepared.
  • Dental hybrid resin block composition (A2 shade) monomer or oligomer Ethoxylate Bistenol
  • a Dimethacrylate (Bis-EMA) 8.5 Triethylene glycol dimethacrylate (TEGDMA) 6 Urethane Dimethacrylate (UDMA) 7 inorganic filler Barium Aluminosilicate (0.7 ⁇ m) 65 Amorphous Synthetic Silica (20nm) 7 polymerization initiator Benzoyl Peroxide (BPO) One polymerization retardant Butylhydroxy toluene (BHT) 0.5 pigment iron oxide (red) 0.007 Iron oxide (yellow) 0.012 Iron oxide (black) 0.005 Titanium dioxide (TIO 2 ) 0.01
  • a dental hybrid resin block composition (A3 shade) was prepared with the composition shown in Table 9 below. 65 g of barium aluminosilicate was added, 0.015 g of red iron oxide was added, 0.020 g of yellow iron oxide was added, 0.010 g of black iron oxide was added, and 0.01 g of titanium dioxide was added, and a dark colored dental hybrid resin block. A composition (A3 shade) was prepared.
  • Dental hybrid resin block composition (A3 shade) monomer or oligomer Ethoxylate Bistenol
  • a Dimethacrylate (Bis-EMA) 8.5 Triethylene glycol dimethacrylate (TEGDMA) 6 Urethane Dimethacrylate (UDMA) 7 inorganic filler Barium Aluminosilicate (0.7 ⁇ m) 65 Amorphous Synthetic Silica (20nm) 7 polymerization initiator Benzoyl Peroxide (BPO) One polymerization retardant Butylhydroxy toluene (BHT) 0.5 pigment iron oxide (red) 0.015 Iron oxide (yellow) 0.020 Iron oxide (black) 0.010 Titanium dioxide (TIO 2 ) 0.01
  • a dental hybrid resin block composition (A1 shade), a dental hybrid resin block composition (A2 shade), and a dental hybrid resin block composition (A3 shade) were sequentially placed in a wide cylindrical mold with a diameter of 102 mm and a height of 12 mm. Each was filled with a thickness of 4 mm. During filling, the mold was heated to 35° C., and the mold was rotated at 140 rpm to apply a planarization process to each layer to obtain a laminated structure before polymerization. The obtained laminated structure was polymerized at 60° C. for 3 hours and at 120° C. for 5 hours, and then slowly cooled to room temperature to finish polymerization to prepare a laminated dental hybrid resin block.
  • a dental hybrid resin block composition (A1 shade) was prepared with the composition shown in Table 10 below. 70 g of barium aluminosilicate was added, 0.003 g of red iron oxide was added, 0.007 g of yellow iron oxide was added, 0.001 g of black iron oxide was added, and 0.01 g of titanium dioxide was added, and bright colored dental hybrid resin block A composition (A1 shade) was prepared.
  • Dental hybrid resin block composition (A1 shade) monomer or oligomer Ethoxylate Bistenol
  • a Dimethacrylate (Bis-EMA) 8.5 Triethylene glycol dimethacrylate (TEGDMA) 6 Urethane Dimethacrylate (UDMA) 7 inorganic filler Barium Aluminosilicate (0.7 ⁇ m) 70 Amorphous Synthetic Silica (20nm) 7 polymerization initiator Benzoyl Peroxide (BPO) One polymerization retardant Butylhydroxy toluene (BHT) 0.5 pigment iron oxide (red) 0.003 Iron oxide (yellow) 0.007 Iron oxide (black) 0.001 Titanium dioxide (TIO 2 ) 0.01
  • a dental hybrid resin block composition (A2 shade) was prepared with the composition shown in Table 11 below. 60 g of barium aluminosilicate was added, 0.007 g of red iron oxide was added, 0.012 g of yellow iron oxide was added, 0.005 g of black iron oxide was added, and 0.01 g of titanium dioxide was added, and a medium color dental hybrid resin block A composition (A2 shade) was prepared.
  • Dental hybrid resin block composition (A2 shade) monomer or oligomer Ethoxylate Bistenol
  • a Dimethacrylate (Bis-EMA) 8.5 Triethylene glycol dimethacrylate (TEGDMA) 6 Urethane Dimethacrylate (UDMA) 7 inorganic filler Barium Aluminosilicate (0.7 ⁇ m) 60 Amorphous Synthetic Silica (20nm) 7 polymerization initiator Benzoyl Peroxide (BPO) One polymerization retardant Butylhydroxy toluene (BHT) 0.5 pigment iron oxide (red) 0.007 Iron oxide (yellow) 0.012 Iron oxide (black) 0.005 Titanium dioxide (TIO 2 ) 0.01
  • a dental hybrid resin block composition (A3 shade) was prepared with the composition shown in Table 12 below. 60 g of barium aluminosilicate was added, 0.015 g of red iron oxide was added, 0.020 g of yellow iron oxide was added, 0.010 g of black iron oxide was added, and 0.01 g of titanium dioxide was added, and a dark colored dental hybrid resin block. A composition (A3 shade) was prepared.
  • Dental hybrid resin block composition (A3 shade) monomer or oligomer Ethoxylate Bistenol
  • a Dimethacrylate (Bis-EMA) 8.5 Triethylene glycol dimethacrylate (TEGDMA) 6 Urethane Dimethacrylate (UDMA) 7 inorganic filler Barium Aluminosilicate (0.7 ⁇ m) 60 Amorphous Synthetic Silica (20nm) 7 polymerization initiator Benzoyl Peroxide (BPO) One polymerization retardant Butylhydroxy toluene (BHT) 0.5 pigment iron oxide (red) 0.015 Iron oxide (yellow) 0.020 Iron oxide (black) 0.010 Titanium dioxide (TIO 2 ) 0.01
  • a dental hybrid resin block composition (A1 shade), a dental hybrid resin block composition (A2 shade), and a dental hybrid resin block composition (A3 shade) were sequentially placed in a wide cylindrical mold with a diameter of 102 mm and a height of 12 mm. Each was filled with a thickness of 4 mm. During filling, the mold was heated to 35° C., and the mold was rotated at 140 rpm to apply a planarization process to each layer to obtain a laminated structure before polymerization. The obtained laminated structure was polymerized at 60°C for 3 hours and at 120°C for 5 hours, and then slowly cooled to room temperature to finish polymerization to prepare a dental hybrid resin block having a laminated structure.
  • a comparative example is presented so that it can be understood, and the comparative example below is merely presented to aid understanding and is not a prior art of the present invention.
  • a dental hybrid resin block composition (A1 shade) was prepared with the composition shown in Table 13 below. 70 g of barium aluminosilicate was added, 0.003 g of red iron oxide was added, 0.007 g of yellow iron oxide was added, 0.001 g of black iron oxide was added, and 0.01 g of titanium dioxide was added, and bright colored dental hybrid resin block A composition (A1 shade) was prepared.
  • Dental hybrid resin block composition (A1 shade) monomer or oligomer Ethoxylate Bistenol
  • a Dimethacrylate (Bis-EMA) 8.5 Triethylene glycol dimethacrylate (TEGDMA) 6 Urethane Dimethacrylate (UDMA) 7 inorganic filler Barium Aluminosilicate (0.7 ⁇ m) 70 Amorphous Synthetic Silica (20nm) 7 polymerization initiator Benzoyl Peroxide (BPO) One polymerization retardant Butylhydroxy toluene (BHT) 0.5 pigment iron oxide (red) 0.003 Iron oxide (yellow) 0.007 Iron oxide (black) 0.001 Titanium dioxide (TIO 2 ) 0.01
  • a dental hybrid resin block composition (A2 shade) was prepared with the composition shown in Table 14 below. 65 g of barium aluminosilicate was added, 0.007 g of red iron oxide was added, 0.012 g of yellow iron oxide was added, 0.005 g of black iron oxide was added, and 0.01 g of titanium dioxide was added, and a medium color dental hybrid resin block A composition (A2 shade) was prepared.
  • Dental hybrid resin block composition (A2 shade) Monomer or oligomer Ethoxylate Bistenol A Dimethacrylate (Bis-EMA) 8.5 Triethylene glycol dimethacrylate (TEGDMA) 6 Urethane Dimethacrylate (UDMA) 7 inorganic filler Barium Aluminosilicate (0.7 ⁇ m) 65 Amorphous Synthetic Silica (20nm) 7 polymerization initiator Benzoyl Peroxide (BPO) One polymerization retardant Butylhydroxy toluene (BHT) 0.5 pigment iron oxide (red) 0.007 iron oxide (yellow) 0.012 Iron oxide (black) 0.005 Titanium dioxide (TIO 2 ) 0.01
  • a dental hybrid resin block composition (A3 shade) was prepared with the composition shown in Table 15 below. 60 g of barium aluminosilicate was added, 0.015 g of red iron oxide was added, 0.020 g of yellow iron oxide was added, 0.01 g of black iron oxide was added, and 0.01 g of titanium dioxide was added, and a dark colored dental hybrid resin block A composition (A3 shade) was prepared.
  • Dental hybrid resin block composition (A3 shade) monomer or oligomer Ethoxylate Bistenol
  • a Dimethacrylate (Bis-EMA) 8.5 Triethylene glycol dimethacrylate (TEGDMA) 6 Urethane Dimethacrylate (UDMA) 7 inorganic filler Barium Aluminosilicate (0.7 ⁇ m) 60 Amorphous Synthetic Silica (20nm) 7 polymerization initiator Benzoyl Peroxide (BPO) One polymerization retardant Butylhydroxy toluene (BHT) 0.5 pigment iron oxide (red) 0.015 Iron oxide (yellow) 0.020 Iron oxide (black) 0.010 Titanium dioxide (TIO 2 ) 0.01
  • a dental hybrid resin block composition (A1 shade) was filled to a thickness of 4 mm in a wide cylindrical mold having a diameter of 102 mm and a height of 12 mm. During filling, the mold was heated to 35 °C, and the mold was rotated at 140 rpm to apply a planarization process. After polymerization at 60 °C for 3 hours and 120 °C for 5 hours, it was cooled slowly to room temperature to finish polymerization. A one-layer dental hybrid resin block was prepared. A dental hybrid resin block composition (A2 shade) was filled to a thickness of 4 mm in the mold on which the first layer dental hybrid resin block was formed.
  • the mold was heated to 35 °C, and the mold was rotated at 140 rpm to apply a planarization process. After polymerization at 60 °C for 3 hours and 120 °C for 5 hours, it was cooled slowly to room temperature to finish polymerization. A two-layer dental hybrid resin block was formed.
  • a dental hybrid resin block composition (A3 shade) was filled to a thickness of 4 mm in the mold on which the second layer of the dental hybrid resin block was formed.
  • the mold was heated to 35 °C, and the mold was rotated at 140 rpm to apply a planarization process. After polymerization at 60 °C for 3 hours and 120 °C for 5 hours, it was cooled slowly to room temperature to finish polymerization. A three-layer dental hybrid resin block was formed.
  • Table 16 is a dental hybrid resin block composition (A1 shade) of the composition shown in Table 1, a dental hybrid resin block composition (A2 shade) of the composition shown in Table 2, and a dental hybrid resin block composition (A3 shade) shown in Table 3 ), and Table 17 shows the results for Examples 1 to 4 and Comparative Example 1.
  • Dental hybrid resin block composition (A1 shade) of the composition shown in Table 1
  • Dental hybrid resin block composition (A2 shade) of the composition shown in Table 2
  • Dental hybrid resin block composition shown in Table 3 (A3 shade) Viscosity(m Pa ⁇ s) 64,790 56,340 48,520
  • Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Flexural strength (MPa) 195 192 182 167 143 Compressive strength (VHN) 153 150 142 136 146 harmony between floors darkness clarity clarity clarity clarity clarity clarity
  • Example 17 the dental hybrid resin blocks prepared according to Examples 1, 2, 3 and 4 had superior flexural strength and surface microhardness compared to the dental hybrid resin blocks prepared according to Comparative Example 1. all showed similar results.
  • Example 1 the boundary in Example 1 is more unclear than in the other examples and Comparative Example 1, so that the restoration is excellent in matching with the natural teeth after the restoration, so that the esthetics will be good.
  • Example 2 The dental hybrid resin block prepared according to this did not have a variation in viscosity of the dental hybrid resin block composition, so the mechanical strength showed similar results to that of the dental hybrid resin block prepared according to Example 1, but the interlayer matching of the laminated structure was clear. Therefore, it has an unnatural disadvantage.
  • the dental hybrid resin blocks prepared according to Examples 3 and 4 had poor interlayer matching when preparing a laminate structure having the same interlayer viscosity of the dental hybrid resin block composition as compared to the dental hybrid resin block prepared according to Example 1. It has disadvantages.
  • the dental hybrid resin block having a laminated structure prepared according to Comparative Example 1 has a disadvantage in that mechanical strength and esthetics are inferior due to the lack of adhesion between the layers by performing a polymerization process for each layer, and thus the boundary between the layers is weak.
  • Example 1 has a difference in viscosity, so there is a difference in application in the preparation of the dental hybrid resin block, and the suitable viscosity range of the dental hybrid resin block composition is 40,000 mPa ⁇ s to 70,000 mPa ⁇ s , More preferably, it is judged to be about 45,000 m Pa ⁇ s to 65,000 m Pa ⁇ s.
  • the dental hybrid resin block composition has a suitable viscosity, it is possible to manufacture a dental hybrid resin block having a laminate structure, and there is industrial applicability.

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Abstract

La présente invention concerne une composition de bloc de résine hybride dentaire destinée à la fabrication d'un bloc de résine hybride dentaire ayant une structure empilée constituée d'au moins trois couches par empilement de couches respectives de différentes couleurs. La composition de bloc de résine hybride dentaire comprend : un monomère ou un oligomère contenant une double liaison insaturée ; un initiateur de polymérisation destiné à initier une photopolymérisation ou une polymérisation thermique ; une charge inorganique ou organique ; et un pigment destiné à développer une couleur. La composition a une viscosité dans une plage de 40 000 mPaㆍs à 70 000 mPaㆍs et, dans la structure empilée du bloc de résine hybride, des compositions de bloc de résine hybride dentaire destinées à former des couches respectives de différentes couleurs ayant des viscosités différentes et des couleurs différentes. Selon la présente invention, au moins trois couches sont empilées en multiples couches et la mise en correspondance des couleurs entre les couches est améliorée, de telle sorte qu'une impression esthétique peut être améliorée lors de la production de prothèses.
PCT/KR2021/016659 2020-11-16 2021-11-15 Composition de bloc de résine hybride dentaire et procédé de fabrication d'un bloc de résine hybride dentaire à l'aide de cette dernière Ceased WO2022103226A1 (fr)

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