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WO2023012465A1 - Procédé de fabrication d'un modèle d'une ou plusieurs dents artificielles - Google Patents

Procédé de fabrication d'un modèle d'une ou plusieurs dents artificielles Download PDF

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Publication number
WO2023012465A1
WO2023012465A1 PCT/GB2022/052025 GB2022052025W WO2023012465A1 WO 2023012465 A1 WO2023012465 A1 WO 2023012465A1 GB 2022052025 W GB2022052025 W GB 2022052025W WO 2023012465 A1 WO2023012465 A1 WO 2023012465A1
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WIPO (PCT)
Prior art keywords
model
teeth
initial
models
channel
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PCT/GB2022/052025
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English (en)
Inventor
Gary ZOLTY
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Individual
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Individual
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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/28—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for medicine
    • G09B23/283—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for medicine for dentistry or oral hygiene
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00—Dental auxiliary appliances
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/28—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for medicine
    • G09B23/30—Anatomical models

Definitions

  • the present invention relates to a model of one or more artificial teeth and a method of manufacturing the same, and is concerned particularly with bespoke models of one or more artificial teeth that imitate a soft internal element of a real tooth.
  • training teeth are real teeth extracted from a human mouth. These extracted teeth, although cleaned, may harbour disease. Carrying out endodontic procedures on these extracted real teeth can lead to an infectious airborne aerosol. Training courses using extracted teeth may therefore need to be undertaken in clinical conditions wherein the use of personal protective equipment (PPE) is necessary which can be uncomfortable.
  • PPE personal protective equipment
  • Some non- biological training teeth are crude training blocks. Some other non-biological training teeth provide a simple hard structure having a central void to represent the root canal. These have the advantage of being easy to copy, easy to practice on, and convenient to use. However, training blocks do not provide a realistic experience to a trainee dentist.
  • non-biological training teeth are mass produced giving no variation between training teeth and, thus may not prepare a trainee dentist for variation in tooth structure that they may experience in clinical practice.
  • Some non-biological teeth that are more reflective of a structure and texture of real teeth may be expensive and may still not provide the variety encountered in real teeth in clinical practice. For example, they may not incorporate abnormalities to simulate any endodontic defects or manifestations of disease of the tooth.
  • Embodiments of the present invention aim to provide a non-biological model of one or more artificial teeth, a set of models and an integral, full set of upper or lower teeth comprising a model or set of models, and a method of manufacturing the same.
  • the model, set of models and integrated set are for use in practicing procedures by trainee dentists, wherein at least some of the artificial teeth in the model, set of models and integrated set imitates a shape, texture and/or structure of a root canal of a real tooth.
  • a model of one or more artificial teeth comprising: a main structure in the shape of one or more real teeth; and one or more internal elements comprising a shaped, malleable substance set within the main structure configured to imitate a soft internal structure of each of the one or more teeth.
  • This model of one or more artificial teeth may provide an inexpensive, realistic, non- biological training tooth for an improved training experience for a trainee dentist.
  • the soft internal structure may be tooth nerves and/or tooth pulp.
  • the malleable substance may be modelling clay.
  • Modelling clay can be manipulated into shape by hand, holds its shape and can be inexpensive. Modelling clay has a soft texture which yields under an external force in a way which imitates the soft internal structure of a real tooth.
  • the main structure may be a casting from a mould based on real teeth.
  • a casting of real teeth may provide the artificial teeth of the model with a realistic shape.
  • the casting may be cast from an acrylic and/or resin based settable material.
  • the acrylic and/or resin based settable material can be poured into the mould in a liquid state and can set hard to resemble the hard dentin layer of a tooth.
  • the main structure and/or at least one internal element may comprise at least one feature configured to imitate tooth defects.
  • a set of models comprising a plurality of the models according to the first aspect, each model being unique in structure within the set.
  • a colour of the malleable substance of each model may be colour coded to represent a particular internal structure of at least one artificial tooth of the model.
  • This may provide a training device with a variety of potential tooth related issues identifiable by the colour of the imitation nerves for an improved training experience for a trainee dentist.
  • the colour may also be an indication of an anatomy of the tooth.
  • Each of the models within the set may comprise at least one tooth of a type different to a type of each other model within the set.
  • an integral, full set of upper or lower teeth comprising at least one model according to the first aspect, or the set according to the second aspect.
  • a method of manufacturing a model of one or more artificial teeth comprising the steps, in any order, of shaping a malleable substance into a form configured to imitate a soft internal structure of a real tooth, casting a main structure in the shape of one or more real teeth using a primary mould based on real teeth; and embedding the shaped, malleable substance into the main structure.
  • Embedding the shaped, malleable substance into the main structure may comprise suspending the malleable material in the primary mould prior to the step of casting the structure wherein the casting solidifies around the malleable material.
  • Embedding the shaped malleable substance into the main structure may comprise forming at least one channel into the main structure, inserting a malleable substance into the at least one channel, and filling in the at least one channel.
  • a material used to fill in the at least one channel may be translucent or opaque.
  • Forming the at least one channel into the model may comprise excavating at least one contoured channel.
  • Inserting a malleable substance into the at least one channel may comprise rolling a modelling clay into at least one strand and placing the at least one strand into the channel.
  • the method may further comprise using the main structure comprising at least one channel to produce at least one replica main structure with preformed channels.
  • the replica main structure with at least one preformed channel may be produced by producing a mould of a main structure with at least one preformed channel using the model after the step of forming at least one channel; and casting a replica main structure with at least one preformed channel using the mould.
  • This may provide an inexpensive way to produce the replica main structure with at least one preformed channel.
  • the replica main structure with at least one preformed channel may be produced by three- dimensional printing of the replica to the dimensions of the model after the step of forming at least one channel.
  • the method may further comprise providing variations in the channels and/or the malleable substance.
  • the method may further comprise providing an initial mould, casting an initial casting using the initial mould, and producing the primary mould from the initial casting.
  • a fifth aspect of the present invention there is provided a method of manufacturing a set of models, each model manufactured according to the fourth aspect of the invention, wherein each model is unique in structure within the set.
  • the initial mould may be a mould of a full set of upper or lower teeth which may produce an initial casting of a full set of upper or lower teeth, the method may further comprise sectioning the initial casting into a set of initial models of one or more teeth and using the set of initial models to produce a set of primary moulds for manufacturing the set of models of one or more artificial teeth.
  • the method may further comprise returning the model or set of models to the corresponding part of the initial mould, adding settable material to the initial mould to fill the initial mould, and leaving the settable material to set to produce an integral, full set of upper or lower teeth comprising the model manufactured according to the fourth aspect, or the set according to the fifth aspect.
  • a model of one or more artificial teeth obtainable by the method of the fourth aspect.
  • a seventh aspect of the present invention there is provided a set of models obtainable by the method of the fifth aspect.
  • Fig. l is a schematic diagram of a model of one or more artificial teeth according to a first example
  • Fig. 2 is a schematic diagram of the model of Fig. 1 at a first stage of manufacture
  • Fig. 3 is a schematic diagram of the model of Fig. 1 at a second stage of manufacture
  • Fig. 4 is a schematic diagram of the model of Fig. 1 at a third stage of manufacture
  • Fig. 5 is a schematic diagram of another example model of one or more artificial teeth according to a second example
  • Fig. 6 is a schematic diagram of the model of Fig. 5 at a first stage of manufacture
  • Fig. 7 is a schematic diagram of the model of Fig. 5 at a second stage of manufacture
  • Fig. 8 is a schematic diagram of the model of Fig. 5 at a third stage of manufacture
  • Fig. 9 is a schematic diagram of an initial model of the model of Fig. 1;
  • Fig. 10 is a schematic diagram of an initial model of the model of Fig. 5;
  • Fig. I la shows an integral, full-set of upper teeth comprising models of artificial teeth according to the invention
  • Fig. 1 lb shows an integral, full-set of lower teeth comprising models of artificial teeth according to the invention
  • Fig. 12 shows a manikin head with affixed upper integral set and lower integral set
  • Fig. 13 is a flow chart of a method of manufacturing a model or set of models
  • Fig. 14 is a flow chart of an alternative method of manufacturing a model or set of models
  • Fig. 15 is a flow chart of optionally initial method steps for manufacturing a model or set of models.
  • Fig. 16 is a flow chart of method steps for manufacturing an integral, full-set of upper or lower teeth.
  • the invention provides a model of non-biological, artificial training teeth, in particular for the use of practical endodontic educational courses. Since the model of training teeth are artificial they can be sterile and free from the risk of harbouring disease. Thus, the trainee dentists are protected from infectious aerosols that can result from carrying out endodontic procedures on real teeth.
  • a model of one or more teeth according to an aspect of the invention may be a model of a group of teeth.
  • the group of teeth are teeth that are adjacent to one another within a set of teeth. More preferably, the groups of teeth are grouped by: first and second molars, first and second premolars, and a canine, a lateral incisor and a central incisor.
  • Figure 1 is a schematic diagram of a model 100 of two artificial teeth.
  • the model 100 has a main structure 102 of a first molar Ml and a second molar M2 and has a root part 108 and a crown part 106.
  • an internal element 104 made from a malleable substance in the form of a replica of the soft internal elements of a tooth such as the nerves and the pulp, wherein the pulp is a plexus of nerves.
  • the main structure 102 may be made from an acrylic material to replicate the hardness of the dentin layer of a real tooth.
  • the malleable substance 104 may be in the form of strands rolled from a modelling clay.
  • the modelling clay may be an oil-based modelling clay such as plasticine. Using rolled strands of modelling clay to replicate the soft internal elements of a tooth may have the benefit of simulating the shape, texture and resistance to an applied force of a real tooth nerve and real tooth pulp.
  • a user of the model may practice a procedure on the model.
  • a resistance on the tool from the hardness of the main structure This resistance will substantially simulate a hardness of tooth dentin.
  • At the interface of the internal element 104 there will be a lower resistance on the tool from the modelling clay. This lower resistance may substantially simulate a soft internal layer of a real tooth.
  • the modelling clay has a shape and a position within the casting configured to improve the simulation of the soft internal structure of a real tooth.
  • the model may comprise features that imitate endodontic defects and/or manifestations of endodontic disease, for example cavities, chips, file separation in the root canal, internal resorptions, ledges, open apexes, perforations, and calcifications to name a few non-limiting examples. This may enable the creation of a pathology to the nerve or replica obstacles that are often encountered in clinical practice.
  • Figure 2 is a schematic diagram of the model of Figure 1 at a first stage of manufacture.
  • the model has a main structure 102 cast from a primary mould.
  • the main structure 102 may be cast from an acrylic material.
  • Figure 3 is a schematic diagram of the model of Figure 1 at a second stage of manufacture.
  • the main structure 102 comprises channels 142 extending from the root part 108 to the crown part 106 of the main structure 102.
  • Figure 4 is a schematic diagram of the model of Figure 1 at a third stage of manufacture.
  • the internal element 104 is situated inside the channels of the main structure 102.
  • Figure 5 is a schematic diagram of a model 200 of a group of three artificial teeth according to another example.
  • the group of three teeth consists of one canine C, one lateral incisor LI and one central incisor CI.
  • the model 200 has a main structure 202 of the three artificial teeth C, LI, CI and has a root part 208 and a crown part 206.
  • Set inside the main structure 202 is an internal element 204 made from a malleable substance in the form of a replica of the soft internal elements of a tooth such as the nerves and the pulp.
  • the casting 202 may be made from an acrylic material to replicate the hardness of the dentin layer of a real tooth and the malleable substance 204 may be in the form of strands rolled from a modelling clay.
  • the modelling clay may be an oil-based modelling clay such as plasticine.
  • the modelling clay has a shape and a position within the casting configured to improve the simulation of the soft internal structure of a real tooth.
  • Figure 6 is a schematic diagram of the model of Figure 5 at a first stage of manufacture.
  • the model comprises the main structure 202 cast from a primary mould.
  • the main structure 202 may be made from an acrylic material.
  • Figure 7 is a schematic diagram of the model of Figure 5 at a second stage of manufacture.
  • the main structure 202 now comprises channels 242 extending from the root part 208 to the crown part 206 of the main structure 202.
  • Figure 8 is a schematic diagram of the model of Figure 5 at a third stage of manufacture.
  • An internal element 204 is inside the channels 242 of the main structure 202.
  • an initial mould is used to produce an initial casting.
  • the initial casting is then sectioned to produce one or more initial models.
  • the initial mould is a mould of a full set of lower teeth or a full set of upper teeth.
  • the initial casting may therefore be in the shape of a full set of lower teeth or a full set of upper teeth.
  • the initial models may be groups of teeth sectioned from the initial casting.
  • the initial models consist of: first and second molars; first and second premolars; and a canine, a lateral incisor and a central incisor.
  • each initial model is based on a different group of teeth.
  • the initial casting may be cast from stone. Stone has the advantage of being inexpensive and suitable for repeated use in forming moulds. Alternatively, the initial casting may be cast from acrylic.
  • Figure 9 is an initial model 300 based on a first molar and a second molar and is made by sectioning out the first and second molars Msl, Ms2 of an initial casting.
  • the initial model 300 can be used to produce a primary mould, for example, the primary mould to cast the model of Figure 1.
  • Figure 10 is an initial model 400 based on a canine, a lateral incisor and a central incisor and is made by cutting out a canine Cs, a lateral incisor Lis and a central incisor Cis of an initial casting.
  • the initial model 400 may be cast from stone.
  • the initial model 400 can be used to produce a primary mould, for example, the primary mould used to cast the model of Figure 5.
  • a model of artificial teeth based on a different group of teeth to the group of teeth described with respect to Figure 1 or Figure 5, for example a first premolar and a second premolar, is substantially similar to the models described in relation to Figure 1 and figure 5.
  • a model of a different group differs in that the model is cast from a corresponding primary mould of said teeth group.
  • the primary mould is a first and a second premolar primary mould. All features described in relation to the model 100 and model 300 are equally applicable to a model based on any other group of teeth.
  • a set of models has a set of two or more of the models of one or more artificial teeth described above.
  • Each model in the set is unique in structure within the set. This uniqueness may be derived, at least in part, from each model being based on a different tooth within a set of teeth.
  • the uniqueness may also be derived, at least in part, from at least one of the following being customised per model within a set of models: contours in the channels; cracks or chips in the main structure; a shape and size of the one or more strands; and position of the one or more strands within the model. This may ensure that no single replica root canal is the same as another in shape and curvature and thus may provide a more natural experience.
  • a colour of the malleable substance of each model may be colour coded to represent a particular state of the soft internal structure.
  • a particular state may be a type of tooth defect such as: decay; disease; cysts; impacted teeth; and/or complex anatomical variations.
  • the colour may be indicative of a complexity of the tooth structure for performing a root canal procedure, for example, a simple structure may be indicated by a green coloured malleable substance, an intermediate structure by red, and a difficult structure by black.
  • Figure I la shows an integral, full set of upper teeth 500a.
  • the full set of upper teeth 500a are fixed together as a solid, single piece.
  • Figure 1 lb shows an integral set of lower teeth 500b.
  • the full set of lower teeth 500b are also fixed together as a solid, single piece.
  • the teeth in the integral set 500a, 500b that are part of the models 100, 200 have the special real -tooth imitation features as described above.
  • the remaining teeth such as tooth X and Y that are not part of a model are a uniform, solid material such as solid acrylic.
  • An integral full set of upper or lower teeth according to the invention has between one tooth to all the teeth having the special, real-tooth imitation features according to the model of the invention.
  • the integral sets 500a and/or 500b can be held in place during a training procedure by a clamp, such as a table clamp.
  • Figure 12 shows a manikin head 530 with the integral upper set 500a affixed to manikin head upper jaw 510 and integral lower set 500b affixed to manikin head lower jaw 520. Affixing the integral sets to the manikin head 530 has the advantage of emulating the head of a real patient whilst holding the integral sets in place.
  • Figure 13 is a flow chart of a method 600 of manufacturing a model or set of models.
  • the method may start at 605 with carrying out the optional method steps of method 800 as described below with respect to Figure 15.
  • a malleable substance is shaped to replicate the soft internal structure of a tooth.
  • the malleable substance is a modelling clay, in particular an oil-based modelling clay such as plasticine.
  • the modelling clay may be shaped by rolling portions into one or more strands to emulate tooth nerves and/or tooth pulp.
  • the strands of modelling clay may be shaped to include a top portion configured to fit into a coronal portion of the tooth to replicate the pulp chamber of a given tooth.
  • the modelling clay may also be shaped in such a way as to form a cyst-like structure which can be used in the teaching and practice of maxilla-facial surgical removal.
  • a colour of the malleable substance may be selected wherein the chosen colour represents a particular state of the structure of the model.
  • a coloured malleable substance may also aid trainee dentist during a training procedure involving the root canal, tooth nerves and/or tooth pulp since a coloured malleable substance may render these features more visible.
  • the malleable substance may be a bright, primary colour such as red or blue.
  • a colour of the malleable substance may represent a particular tooth defect within the model. For example, a blue malleable substance may indicate a fractured file in the root canal or a red malleable substance may indicate an open apex.
  • one or more main structures of one or more teeth is cast using one or more corresponding primary mould by filling the corresponding primary moulds with a settable material, leaving it to set and removing the one or more models from the primary moulds.
  • the one or more primary moulds are based on real teeth.
  • Step 620 may produce the models at a first stage of manufacture shown in figure 2 and figure 6, respectively.
  • the model may be cast in an acrylic material which sets to form a hard structure to emulate a hardness of a dentin layer of a tooth.
  • Step 630 one or more channels are formed into the model.
  • Step 630 may produce models comprising channels 142, 242 as shown in figure 3 and figure 7, respectively.
  • the size and shape of the channels may be formed to emulate the root canal, coronal portion and/or pulp chamber of a real tooth.
  • the channels may be excavated using a small drill such as a dentist drill.
  • the channels may be formed by suspending removable elements in the primary mould for the material to set around.
  • the method may include optional step 635.
  • a replica main structure with preformed channels is created.
  • This replica main structure with preformed channels may be created by producing a secondary mould from the main structure comprising channels then casting further main structures with preformed channels from the secondary mould.
  • a replica main structure with preformed channels may be created by three-dimensional printing of the replica to the dimensions of the main structure after the step of forming at least one channel.
  • Optional step 635 allows for reproduction of models with preformed channels without carrying out step 630. This may allow making the method of manufacturing a plurality of the set of models more efficient and lead to reliable reproduction.
  • Method 600 further comprises optional step 640 of spraying the model with a resin type paint, in particular, spraying the walls of the channels. This may help to maintain and control the one or more strands whilst being manipulated into position into the channels.
  • the one or more strands is inserted into the channel to replicate the soft internal structure of a tooth.
  • the one or more strands is inserted in a manner to replicate tooth pulp and/or tooth nerves.
  • Step 650 may produce models comprising replica tooth nerves and/or pulp 104, 204 as shown in figure 4 and figure 8, respectively.
  • the set of models may comprise more than one artificial tooth and thus a plurality of channels and strands to be inserted within those channels.
  • Each of the plurality of channels can be unique from each other channel, for example, by incorporating a curvature and/or contour to the channel.
  • each of the plurality of strands can be unique from each other strand, for example, a length of the strand may vary slightly to mimic the length of a natural nerve for a given tooth.
  • a hard element may be depressed into the malleable material to imitate root canal obstacles that are often encountered in clinical practice.
  • the hard element may represent a chip of the hard layer of tooth that has come away and become lodged in the root canal.
  • the one or more channels are filled in.
  • the soft strands replicating a soft internal layer of a tooth is surrounded by a hard material replicating the hard outer layer of the tooth.
  • the channels are filled in by partially filling the primary mould with a settable material, placing the model comprising the one or more strands into the partially filled primary mould and leaving the settable material to set.
  • the settable material may be a resin-based material.
  • the material used to fill in the channel can be coloured. The colour of the material to fill in the channel may be different to the colour of the main structure such that the channel portion is visible and distinguishable from the main structure.
  • the colour of the material to fill in the channel is a dark colour to obscure the internal structure of the tooth or even render a portion of the model opaque. Since real teeth are opaque, an obscured or opaque artificial tooth will more accurately simulate real teeth.
  • the model can then be removed from the primary mould.
  • variations can be incorporated to imitate abnormalities of real teeth. These abnormalities may be tooth defects of the kind resulting from disease, a fractured file in the root canal, perforations, ledges, open apices, lateral and accessory root canals, multiple root canals, and any other complex anatomical variations to name a few non-limiting examples.
  • the variations can be included at the various stages of manufacture. Variations can be incorporated when: forming the channels; shaping the one or more strands; inserting the one or more strands into the channel; and into the main structure during the casting process.
  • the method optionally comprises the step (not shown) of polishing the one or more artificial teeth of the model of set of models.
  • Method 600 produces a model or set of models such as model 100 as shown in Figure 1 and model 200 as shown in Figure 5.
  • Figure 14 is a flow chart of an alternative method 700 of manufacturing a model or set of models.
  • the method may start at 705 with carrying out the method steps of method 800 as described below with respect to Figure 15.
  • a malleable substance is shaped into strands to replicate the soft internal structure of a tooth.
  • the malleable substance is material that can be dissolved or is soft enough to drill, or endodontically file, through. It may be a flexible plastic that holds its shape when manipulated.
  • the malleable substance may be shaped to emulate tooth nerves and/or tooth pulp.
  • the one or more strands may be shaped to include a top portion configured to sit at a coronal portion of the tooth to replicate the pulp chamber of a given tooth. A colour of the one or more strands can be selected for the same reasons as described above with respect to method 600.
  • the one or more strands are suspended in the one or more primary moulds before the step of casting 730 the one or more main structures which then solidify 740 around the strands.
  • Figure 15 is a flow chart of further optional initial method 800 for manufacturing a model or set of models. These initial steps 800 can be carried out prior to the main steps of the method 600 in Figure 13 or method 700 in Figure 14.
  • an initial mould is provided.
  • This initial mould may be moulded from a set of real teeth.
  • the initial mould may be a mould of a full set of teeth from the upper jaw and the lower jaw.
  • an initial casting is made from the initial mould.
  • the initial casting is made from stone which is inexpensive and durable enabling repeated initial moulds to be made by the initial casting.
  • the initial casting could be made from other materials such as acrylic.
  • the initial casting is sectioned into a plurality of initial models of one or more teeth.
  • the initial casting may be sectioned by cutting the initial casting, for example with a small electric saw or with a laser.
  • An initial casting of a casting of teeth from the upper jaw may be sectioned into one or more of: first and second upper molars; first and second upper premolars; an upper canine, an upper lateral incisor and a central incisor to provide the plurality of initial models.
  • an initial casting of a casting of teeth from the lower jaw may be sectioned into one or more of: first and second lower molars; first and second lower premolars; a lower canine, a lateral lower incisor and a central lower incisor to provide the plurality of initial models.
  • Step 830 may produce the initial model 300 of a first molar Msl and a second molar Ms2 as shown in Figure 9 and/or the initial model 400 of a canine Cs, a lateral incisor Lis and a central incisor Cis as shown in Figure 10.
  • These teeth groupings are illustrative and other adjacent teeth combinations can be grouped together into an initial model.
  • the at least one initial model is used to produce the at least one primary mould for use in the method 600 or the method 700.
  • the method may continue 860 with the steps of method 900 as will be described below with respect to Figure 16.
  • Figure 16 is a flow chart of further optional steps 900 to use the model or set of models manufactured according to methods 600, 700 in combination with method 800 to produce an integral full set of upper teeth or an integral full set of lower teeth, such as the integral set 500a or 500b in Figures I la and 1 lb, respectively.
  • the model or set of models are returned to the initial mould.
  • settable material is added to the initial mould to fill the initial mould.
  • all of the volume of the initial mould is filled with one or more models and settable material.
  • the material in the initial mould is left to set to create a complete casting of the initial mould.
  • the complete casting will, thus, take the form of a full set of lower teeth when the initial mould is a mould based on lower teeth or a full set of upper teeth when the initial mould is a mould based on upper teeth.
  • an integral, one- piece set is provided having teeth some of which are teeth according to the model of the invention.
  • the integral set can be fixed into a manikin head, see Figure 12. Fixing the integral set into a manikin head has the benefit of holding the teeth in place when a trainee dentist uses the set for a practice procedure. Furthermore, it further emulates real life. The integral set could alternatively be held in place by a clamp.
  • malleable substance used in the internal element configured to imitate a soft internal structure of a tooth is a substance which is mouldable, can be easily shaped by hand and holds its shape.
  • malleable material is at least some of puttylike, flexible, elastic, pliable, tractile and/or supple.
  • each model is different to each other model in the set.
  • Each model may differ by including a different tooth type to at least one of the tooth types of the other models in the set.
  • Each model may further differ by including features imitating tooth defects different from tooth defect imitation features of other models in the set.
  • the invention provides a model of one or more artificial teeth for use in dentistry training.
  • the model of the invention may enable the trainee dentist to practice procedures on a non-biological training tooth which is more representative of teeth that the dentist will encounter in real practice.
  • the model can be used in the teaching and practice of surgical treatments of a root tip.
  • the invention provides models which can include representations of manifestations of disease or damage, in particular disease or damage which effect the root canal.
  • the invention provides a set of models having a set of bespoke models of one or more artificial teeth to provide an improved training experience more representative of a procedure in clinical practice.
  • the invention provides a method for manufacturing inexpensive, customisable, non- biological training teeth.
  • the bespoke nature of the training teeth made according to the invention enable training teeth that can reflect a variety of issues of teeth that a dentist may experience in real practice.
  • Colours of nerves represented by strands of malleable material may be indicative of root canal complexity and anatomy.
  • different coloured plasticine can be used.
  • black plasticine can be used for a highly complex root canal structure having complex tooth defects
  • a green plasticine can be used when there are no tooth defects and the root canal structure is regular
  • a red plasticine can be used for intermediate complexity of root canal structure and/or tooth defects.

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  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
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  • General Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
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Abstract

La présente invention concerne un modèle d'une ou plusieurs dents artificielles et son procédé de fabrication destinés à être utilisés dans l'industrie de la formation dentaire, le modèle comprenant une structure principale (102) sous la forme d'une ou plusieurs dents réelles et un ou plusieurs éléments internes (104) comprenant une substance malléable façonnée placée à l'intérieur de la structure principale configurée pour imiter une structure interne molle de chacune de la ou des dents. Le modèle permet aux dentistes en formation de pratiquer des techniques dentaires, telles que des interventions endodontiques, sur des dents modèles réalistes.
PCT/GB2022/052025 2021-08-03 2022-08-01 Procédé de fabrication d'un modèle d'une ou plusieurs dents artificielles Ceased WO2023012465A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2111175.2 2021-08-03
GB2111175.2A GB2614692A (en) 2021-08-03 2021-08-03 Method of manufacturing a model of one or more artificial teeth

Publications (1)

Publication Number Publication Date
WO2023012465A1 true WO2023012465A1 (fr) 2023-02-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2022/052025 Ceased WO2023012465A1 (fr) 2021-08-03 2022-08-01 Procédé de fabrication d'un modèle d'une ou plusieurs dents artificielles

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Country Link
GB (1) GB2614692A (fr)
WO (1) WO2023012465A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2750670A (en) * 1952-10-13 1956-06-19 Vigg John Dental model
US20110136090A1 (en) * 2008-07-07 2011-06-09 Drsk Development Ab Method and a device for practicing dental treatments
WO2012161646A2 (fr) * 2011-05-20 2012-11-29 Drsk Development Ab Procédé de production d'une structure multicouche

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2750670A (en) * 1952-10-13 1956-06-19 Vigg John Dental model
US20110136090A1 (en) * 2008-07-07 2011-06-09 Drsk Development Ab Method and a device for practicing dental treatments
WO2012161646A2 (fr) * 2011-05-20 2012-11-29 Drsk Development Ab Procédé de production d'une structure multicouche

Also Published As

Publication number Publication date
GB202111175D0 (en) 2021-09-15
GB2614692A (en) 2023-07-19

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