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WO2016123527A1 - Systèmes, procédés et appareil de fabrication de moulages pour la fabrication de prothèse dentaire - Google Patents

Systèmes, procédés et appareil de fabrication de moulages pour la fabrication de prothèse dentaire Download PDF

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Publication number
WO2016123527A1
WO2016123527A1 PCT/US2016/015729 US2016015729W WO2016123527A1 WO 2016123527 A1 WO2016123527 A1 WO 2016123527A1 US 2016015729 W US2016015729 W US 2016015729W WO 2016123527 A1 WO2016123527 A1 WO 2016123527A1
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WO
WIPO (PCT)
Prior art keywords
impression
tray
patient
record
dental
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/US2016/015729
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English (en)
Inventor
Miroslav Mike STANIC
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Individual
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Individual
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 Individual filed Critical Individual
Publication of WO2016123527A1 publication Critical patent/WO2016123527A1/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
    • A61C9/00—Impression cups, i.e. impression trays; Impression methods
    • A61C9/004—Means or methods for taking digitized impressions
    • A61C9/0046—Data acquisition means or methods
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C9/00—Impression cups, i.e. impression trays; Impression methods
    • A61C9/004—Means or methods for taking digitized impressions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C9/00—Impression cups, i.e. impression trays; Impression methods
    • A61C9/004—Means or methods for taking digitized impressions
    • A61C9/0046—Data acquisition means or methods
    • A61C9/0053—Optical means or methods, e.g. scanning the teeth by a laser or light beam

Definitions

  • the present disclosure relates to devices and methods for acquiring impressions and making casts for fabrication of dental prostheses, such as dentures.
  • the lab fabricates bite blocks and custom trays if the dental professional opts to go with custom trays.
  • a common practice is to use stock trays to acquire functional impressions. Border molding is needed for custom tray and stock tray. Border molding allows the tray to be fitted into the mouth such that it sits passive and does not impinge on any anatomical structure such as facial muscles.
  • the lab takes about two weeks to provide the bite blocks back to the dental professional.
  • the dental professional takes bite records using the lab-provided bite blocks. The vertical dimension, lip line, midline, and smile line are recorded on this lab-made bite block. The tooth shade and mold are selected at this time.
  • the dental professional can have difficulty in acquiring an accurate record if the patient is biting in protrusive or is giving incorrect centric relation. It is also difficult to get proper vertical dimension as it is bulky and causes the patient's lips to protrude. The dental professional has to trim or add more wax to get proper vertical dimension. The trays that hold wax have suction problems and are hard to use. If the dental professional requested a custom tray, then functional impressions will be taken at this time. The bite block with all the recordings is sent to the lab, where wax-based dentures are fabricated for the patient to try during the next visit. This fabrication step takes about one to two weeks.
  • the dental professional evaluates the patient's comfort level, the dentures' fit in the oral cavity for aesthetics, function, and phonetics and for patient approval. If changes are needed, a new bite is taken with instructions to the lab of the required changes. This step is repeated until dentures are made to fit satisfactorily and can often take two to four visits with five to ten working days in- between the visits. After a satisfactory fit, the laboratory processes the record and creates the dentures in acrylic for final delivery in five to ten working days. The dental professional fits the patient with the final product.
  • a dental impression recording device includes (a) an upper tray including a first ridge zone configured to receive impression material and a platform configured to record tracings; (b) a lower tray including a second ridge zone configured to receive impression material and a bridge configured to accept a connector; and (3) a connector configured to lock the upper and lower tray at a predetermined height.
  • the platform of the upper tray is coated with recordable material to record tracings.
  • the recordable material is graphite or paint.
  • the bridge has a threaded perforation.
  • the connector has a screw thread to engage with the threaded perforation of the bridge.
  • the impression material is chosen from a group consisting of irreversible hydrocolloid (alginate), polysulfide (rubber base), polyether, or zinc oxide/eugenol materials, silicone, VPS materials, polyvinylsiloxane, or combinations thereof.
  • Exemplary embodiments of the invention include methods of using a dental impression recording device to capture a dental record for manufacturing dental prosthesis such as dentures.
  • An exemplary method includes first making an impression of the upper ridge using upper tray. Impression materials, like polyvinylsiloxane, are dispersed in the ridge zone of the impression trays. The dental professional holds the tray until the impression material sets and an impression is produced. Then the tray is removed. The process is repeated using the lower tray to obtain an impression of the lower ridge of the patient. Tracing of the arch is performed using upper tray using the Gothic Arc tracing method, specifically the active method. The connector is placed onto the bridge of the lower tray and is used to secure the trays at the proper height.
  • Impression materials like polyvinylsiloxane
  • the proper vertical dimension for the particular patient is determined using one of a variety of measuring devices including but not limited to a caliper, a ruler, or scriber with a lock. From the tracing results, the dental professional makes an indentation in the upper tray to accommodate the connector from the lower tray, at the location where the three lines cross on the tracings or at the position determinative of the correct centric relation.
  • the upper and lower trays are assembled back and placed into the oral cavity of the patient. After appropriate placement, bite registration material is injected and allowed to sets, thus creating the record.
  • Vertical dimension, centric relation, midline, lip line, smile and position of maxillary two central teeth are recorded using the apparatus described herein, thus creating the bite record.
  • the tooth shade and mold are selected.
  • Fig. 1 is a representation of the upper tray, according to an exemplary embodiment of the invention.
  • Fig. 2 is a representation of the edges of the upper tray, according to an exemplary embodiment of the invention.
  • FIG. 3 is a representation of the lower tray, according to an exemplary embodiment of the invention.
  • Fig. 4 is a representation of the pin, according to an exemplary embodiment of the invention.
  • the apparatus comprises at least two impression trays- an upper tray and a lower tray.
  • An impression tray is a device that is configured to contain or control an impression material for making an impression.
  • impression trays can be either stock or custom trays, currently most dental professionals use stock trays.
  • Impression trays used herein can be in a variety of different shapes and sizes to cater to the diversity of sizes of the oral cavities of patients.
  • Stock trays will come in different sizes, such as small, medium, large, or universals, or adjustable as appropriate. Large or extra large sizes to accommodate special arches.
  • the impression trays are made of one of the many FDA approved materials such as acrylonitrile butadiene styrene, or other materials including but not limited to acrylic resins, plastic, silicone, metal, or combinations thereof. These impression trays can be made of disposable resin or autoclavable metal or a combination thereof.
  • Impression materials include but are not limited to vinyl polysiloxane, poly ether, rubber base, silicone, alginate substitutes, or other such material capable of being used to take impression of the ridges. Impression materials can be hand mixed or mixed using devices such as auto gun mixers. Impression materials are mixed and dispersed into the impression trays using a variety of techniques including manual dispersion, filling using cartridges, or other techniques known to a person skilled in the art. In certain embodiments, the impression materials are held on to the tray using adhesives - can be manufacture recommended to help the adhesion of the impression material to the tray.
  • Certain embodiments contain an upper tray with a platform to record the trace and a lower tray to hold a connector.
  • the upper tray has two parts: (1) a ridge zone that is configured to house an impression material for taking the ridge impression, and (2) a platform to record the tracings.
  • the lower tray comprises a bridge configured to hold a connector and a ridge zone that is configured to house an impression material for taking the ridge impression.
  • the connector can be a pin, or a screw, or a bolt, or other mechanisms that can connect the upper and lower tray at progressive heights.
  • the pin is configured to fit into a predetermined perforation in the bridge of the lower tray.
  • the pin has a threaded component to move the pin up and down and progressively adjust the height between the upper and lower trays.
  • the perforation in the bridge can be threaded to receive the threaded end of a pin or a screw.
  • the lower tray may contain an indentation that is configured to detect if the tray tilts up during the process.
  • Certain embodiments include other perforations in the upper and lower impression trays in the ridge zone to reduce the potential for pressure created when the impression material confined in the ridge zone is molded to fit the ridge and create an impression. These perforations also facilitate leakage of impression material that helps secure the impression material when the impression is taken. The material that comes out through the perforation will help to secure or bond the impression material used. This material also helps secure the record and facilitates reassembly if the impression material separates from the tray. Other materials such as adhesives can also be applied to the tray in the region where the registration material will be placed. [00019] An exemplary embodiment of the upper tray 100 is shown in Fig. 1. The upper tray has two parts: a ridge zone 102 and a platform 104.
  • the platform is configured such that a marking material can be coated on the surface facing the lower tray.
  • Fig. 2 is a detailed illustration of the edges 202 of the upper tray. In this embodiment, the edges 202 of the upper tray are rounded for patient comfort.
  • FIG. 3 An exemplary embodiment of the lower tray 300 is shown in Fig. 3.
  • the lower tray has two parts: a ridge zone 302 and a bridge 304.
  • the bridge 304 has a perforation 306 that is configured to accept a pin through a threading mechanism.
  • the edges 308 of the lower tray are rounded for patient comfort.
  • the lower tray 300 has an indentation 310 that is configured to detect if the tray tilts up during the process.
  • FIG. 4 An exemplary embodiment of the pin 400 is shown in Fig. 4.
  • the upper part 402 of the pin faces the upper tray, while the lower part 404 of the pin is screwed into the perforation 306 in the bridge 304 of the lower tray 300.
  • kits that comprises the upper tray, the lower tray, and one or more suitable connectors, such as a pin.
  • kits that includes (a) the apparatus including the upper tray, the lower tray, and one or more suitable connectors, such as a pin, and (b) one or more of the materials required to capture a record such as impression materials and registration materials.
  • the terms-"upper tray” and “lower tray” are relative and does not mean that the upper tray is always above the lower tray; it is possible to use the lower tray for taking impression of the maxillary ridge and the upper tray for the mandible ridge.
  • the method includes first making an impression of the upper ridge using upper tray. Impression materials, like polyvinylsiloxane, are dispersed in the ridge zone of the impression trays.
  • the dental professional provides instructions regarding proper aligning or positioning of the tray in the oral cavity, such as placing the tray as posteriorly as possible or requesting the patient to hold the tray with equal pressure on the right and left side at the bicuspid area, so as to maintain the platform as level as possible.
  • the dental professional holds the tray until the impression material sets and an impression is produced. Then the tray is removed. The process is repeated using the lower tray to obtain an impression of the lower ridge of the patient.
  • Tracing of the arch is performed using upper tray using the Gothic Arc tracing method, specifically the active method.
  • the pin in the lower tray is used to secure the trays.
  • the proper vertical dimension for the particular patient is determined using one of a variety of measuring devices including but not limited to a caliper, a ruler, or scriber with a lock. The internal vertical dimension is compared to the predetermined external measurement.
  • Tracing process is the determination of the relationship between the upper and lower jaws. Then the upper and lower trays are removed. The platform of the upper tray is coated with marking material like paint, graphite, crayon, articulating paper, or otherwise recordable substance. The entire apparatus is placed back into the mouth of the patient. The patient is then asked to move the jaws forward and backward, and left and right as previously practiced. This repetitive movement of the jaw results in the tracing pattern being captured on the marking material in the upper tray. The tray is then removed to interpret the results.
  • the dental professional makes an indentation in the upper tray to accommodate the pin from the lower tray, at the location where the three lines cross on the tracings or at the position determinative of the correct centric relation.
  • the upper and lower trays are assembled back and placed into the oral cavity of the patient. Once patient closes her mouth and finds the indentation, then the patient is instructed to hold in that position.
  • the dental professional checks to see if there is any AP rotation present. If not, then the bite registration material is injected to fill in the void between the trays, thus locking the upper and lower tray and creating the record. If AP rotation is present, then the dental professional can correct that by stabilizing the tray with his/her hand and injecting the bite material to capture the record.
  • the dental professional is able to get a record that is removed and sent to the lab for fabricating the dentures.
  • Vertical dimension, centric relation, midline, lip line, smile and position of maxillary two central teeth are recorded using the apparatus described herein, thus creating the bite record.
  • the tooth shade and mold are selected.
  • the dental professional has full control for centric relation recording. Moreover, patient-induced errors are reduced during centric relation recording.
  • Use of this apparatus causes no protrusion of the lips so the dental professional can determine a more accurate vertical dimension. There is no wax to cut down or add more for altering the vertical dimension—this is done by simply adjusting the pin up or down.
  • the dental professional could optionally place two maxillary centrals (the first two larger teeth in the center of the maxillary arch) for patient to see teeth position, lip line, and midline instead of just placing markings on impression.
  • Use of this apparatus also eliminates the use of the lab to make bite blocks thus eliminating at least one patient visit. Use of this apparatus minimizes need for retries and thus cuts on number of patient visits to the dental office.
  • the dental professional fits the patient with wax dentures, and evaluates the patient's comfort level, the dentures' fit in the oral cavity for aesthetics, function, and phonetics and for patient approval. If changes are needed, a new bite is taken with instructions to the lab of the required changes. This step is repeated until dentures are made to fit satisfactorily and use of this new apparatus decreases the likelihood of any repeats for fitting. After a satisfactory fit, the laboratory processes the record and creates the dentures in acrylic for final delivery in five to ten working days. The dental professional fits the patient with the final product.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

L'invention concerne un appareil pour capturer un dossier dentaire qui comporte (a) un plateau supérieur (100) comprenant une première zone d'arête (102) conçue pour recevoir un matériau d'empreinte et une plate-forme (104) conçue pour enregistrer des traçages ; b) un plateau inférieur (300) comprenant une seconde zone d'arête (302) conçue pour recevoir un matériau d'empreinte et un pont (304) conçu pour accepter un raccord (400) ; et un raccord (400) conçu pour verrouiller les plateaux supérieur et inférieur (100, 300) à une hauteur prédéterminée.
PCT/US2016/015729 2015-01-30 2016-01-29 Systèmes, procédés et appareil de fabrication de moulages pour la fabrication de prothèse dentaire Ceased WO2016123527A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201562110374P 2015-01-30 2015-01-30
US62/110,374 2015-01-30

Publications (1)

Publication Number Publication Date
WO2016123527A1 true WO2016123527A1 (fr) 2016-08-04

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PCT/US2016/015729 Ceased WO2016123527A1 (fr) 2015-01-30 2016-01-29 Systèmes, procédés et appareil de fabrication de moulages pour la fabrication de prothèse dentaire

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5044950A (en) * 1989-11-29 1991-09-03 Stanley Hobish Therapeutic training device and method for fitting dentures
JP3017205U (ja) * 1994-10-18 1995-10-24 株式会社松風 歯科用咬合高径及びゴシックアーチ測定器
JPH11318956A (ja) * 1998-04-16 1999-11-24 Heung Ku Kwak 下顎の中心位顎間関係記録装置
WO2010135374A2 (fr) * 2009-05-19 2010-11-25 Tae Hyung Kim Méthode et appareil de préparation d'un dentier
WO2015089676A1 (fr) * 2013-12-19 2015-06-25 Trispera Dental Inc. Système et procédé pour déterminer une morsure d'un individu édenté

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5044950A (en) * 1989-11-29 1991-09-03 Stanley Hobish Therapeutic training device and method for fitting dentures
JP3017205U (ja) * 1994-10-18 1995-10-24 株式会社松風 歯科用咬合高径及びゴシックアーチ測定器
JPH11318956A (ja) * 1998-04-16 1999-11-24 Heung Ku Kwak 下顎の中心位顎間関係記録装置
WO2010135374A2 (fr) * 2009-05-19 2010-11-25 Tae Hyung Kim Méthode et appareil de préparation d'un dentier
WO2015089676A1 (fr) * 2013-12-19 2015-06-25 Trispera Dental Inc. Système et procédé pour déterminer une morsure d'un individu édenté

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SHIGRU INABA: "Clinical Procedure of a Simultaneously Taking Impression for the Fulldentures", THE JOURNAL OF JAPAN GNATHOLOGY, vol. 19, no. 2, 1998, pages 225 - 235 *

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