JP3273466B2 - Gypsum tooth model mounting and fixing device and mounting and fixing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing device and a fixing method for a gypsum dental model used for processing a crown restoration or a denture, and more particularly to a base material for mounting an articulator. When fixing the plaster tooth model, the number of fixing pins used is minimized to reduce the cost of forming and forming the plaster tooth model and improve the work efficiency, and to easily attach and detach the structure with high precision. The present invention relates to a gypsum dental model mounting and fixing device and a mounting and fixing method which can be configured.

[0002]

2. Description of the Related Art Conventionally, a plaster dentition model used for processing and forming a crown restoration, a denture or the like is formed by pouring fluid gypsum into an impression of a patient's upper or lower jaw to form a treatment tooth site of the patient. The gypsum dentition model and the corresponding gypsum dentition model are removably fixed to a pair of upper and lower base materials for mounting an articulator via respective fixing pins.

[0003] When actually performing the processing of forming a crown restoration or a denture, first, the occlusal state of the upper and lower plaster dental model was confirmed, and then the plaster dental part of the treatment tooth site was cut off with a precision saw. Later, a gypsum dentition model corresponding to the gypsum dentition model including the treatment tooth part to which the gypsum dentition part of the removed restoration tooth part is subjected to formation of a crown or a denture of a required restoration on the plaster dentition part of the treatment tooth part which has been detached is attached again. In general, a method in which correction and processing are appropriately repeated at the treatment tooth site so that the occlusion of the patient is in the best condition is generally adopted.

However, in the conventional articulator, a plurality of fixing pins are projected at predetermined intervals along the dentition at each bottom of the gypsum dentition model including the treatment tooth site and the mating gypsum dentition model. Since the base material side on which the fixing pins fit is also formed of gypsum, a high level of technology is required in order to align the protrusion accuracy of all the fixing pins with respect to the base material.
When performing correction and processing repeatedly on the treatment tooth site,
The removal and insertion of the gypsum dentition part of the treatment tooth site will also be repeated inevitably, and the insertion hole on the base substrate side into which the fixing pin is inserted will be loose due to the lack of gypsum, falling off, etc. It becomes impossible to maintain, and as a result, it is easy to induce a foreign body sensation when the completed crown restoration and the denture are covered on the treated tooth site of the patient, and in the worst case, the plaster dental model is replaced from scratch It had the disadvantage that it had to be rebuilt.

Further, the plaster dental model formed as described above and the base material for removably fixing the same are mutually unique with respect to the mounting and dismounting structure via the fixing pins. It is impossible to fix the gypsum dental model to the base material of patient B at all, and it is necessary to prepare gypsum dental model and base material in a number corresponding to the number of patients. Since the dental model and the base material including the fixing pins are completely discarded when the treatment of the patient is completed, the production time and the production cost have to be greatly increased.

[0006]

SUMMARY OF THE INVENTION The present invention has been conceived in the course of research and development aimed at improving the mounting and fixing accuracy of a plaster dental model and reducing the manufacturing cost in view of the above situation. The purpose is to fix a gypsum dentition model to the base material for mounting the articulator, bury a plurality of hollow sleeves at predetermined intervals along the dentition on the base material side, The number of fixing pins on the gypsum dental model side to be used is minimized, and the cost for forming and processing the gypsum dental model is reduced and the work efficiency is improved, and a highly accurate detachable structure is easily configured. It is an object of the present invention to provide a gypsum dental model mounting and fixing device and a mounting and fixing method which can be performed.

[0007]

Means for Solving the Problems In order to solve the problems, a first technical means adopted by the present invention is to provide an articulator mounting base substrate with an opening flush with one surface of the base substrate. A plurality of hollow sleeves are embedded vertically at predetermined intervals along the dentition, and a gypsum dentition model including a treatment tooth part separated from the impression is fixed to a base base via a fixing pin fitted into the hollow sleeve. A gypsum dentition model mounting and fixing device configured to be detachably fixed to a material, wherein a body portion of a headed pin having a head buried in the treatment tooth portion, and an arbitrary non-excluding portion other than the treatment tooth portion. The main body of the headed pin having the head buried in the treatment tooth site is dropped from the bottom of the gypsum tooth model in accordance with the hollow sleeve burying position on the corresponding base material side, and each of the headed pins is To other hollow sleeves except the hollow sleeve into which A headless pin whose upper part is flush with one surface of the base material is removably fitted, and a gypsum dentition model with different treatment teeth for each patient can be inserted into the same base material and the insertion position of the headless pin can be changed. The feature is that it can be attached with

As a second technical means, a plurality of hollow sleeves, each having an opening surface flush with one surface of the base material, are provided on a base material for mounting an articulator at predetermined intervals along a row of teeth. Embedded in a shape, a plaster dentition model including a treatment tooth site detached from the impression, to removably fix to the base material via a fixing pin fitted into the hollow sleeve, among the plurality of hollow sleeves, A first step of fitting a headed pin having a head projecting from one surface of the base substrate into a hollow sleeve matching a treatment tooth portion and a hollow sleeve matching any non-treatment tooth portion, respectively; A second step of inserting a headless pin flush with one surface of the base material into another hollow sleeve other than the hollow sleeve into which the headed pin is inserted in the step, and the plaster dentition model including a treatment tooth site From the bottom of the It is characterized in that a third step of fixing the headed pin head that through the flow plaster.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to an embodiment shown in the drawings. In FIG. 1, 1 is an articulator in which upper and lower base materials 2 and 3 are detachably mounted,
The articulator 1 has a fixed frame 4 that also serves as a support base for the lower base member 3, a pair of columns 5, 6 standing upright and spaced apart from each other, and a gantry provided between the columns 5, 6. A table in which an upper jaw frame 8 is supported on the upper frame 7 so as to be freely rotatable up and down, and an incisal guide pin 9 is hung vertically on the upper end of the upper jaw frame 8 so as to be movable up and down. The articulator 1 is supported on the surface 4a. Reference numeral 10 denotes a supporting surface of the upper base substrate 2, 11 denotes a fixing knob for attaching the upper base substrate 2 to the supporting surface 10, 1
Reference numeral 2 denotes an adjustment knob for adjusting the fixed position of the incisal guide pin 9.

As shown in FIGS. 2 and 3, the upper and lower base materials 2 and 3 are formed of a high-rigidity synthetic resin material in the same shape, and are filled in a U-shape in plan view along the teeth. A concave portion 13 is formed on one surface side of each of the base materials 2 and 3, and a plurality of hollow sleeves 14, 14 ... stand up at predetermined intervals along a tooth row on a bottom surface 13a in the filling concave portion 13. The opening is flush with the bottom surface 13a and penetrates through the other surface of the base members 2 and 3 from the embedding positions of the hollow sleeves 14, 14. And a through-hole 17 for detachment of the headless pin 16 (shown in black). Reference numerals 2 ′ and 3 ′ denote attachment portions for attaching the upper and lower base materials 2 and 3 to the fixed frame 4 or the support surface 10 of the articulator 1.

The headed pin 15 is connected to the main body 15a and the head 1
5b, the upper portion and the head 15b of the main body 15a have a length that can protrude from the bottom surface 13a of the filling recess 13 when fitted into the hollow sleeve 14. When fitted into the hollow sleeve 17 similarly to the headed pin 15, the upper surface thereof is set to be flush with the bottom surface 13a of the filling recess 13, and the hollow sleeve 17 In a state where the pins 15 and 16 are fitted into the hole 14, the pins 15 and 16 protruding from the through holes 17 are pressed with a rod-shaped jig (not shown) so that the pins 15 and 16 can be easily removed from the hollow sleeve 14. It is configured as follows.

Next, a procedure for attaching the gypsum dentition model 18 on the lower jaw side detached from the impression of the patient to the lower base member 3 will be described with reference to FIGS. In FIG. 4, the plaster tooth model 18 has a treatment tooth portion 18a and a non-treatment tooth portion 18b formed integrally with each other. The bottom portion 19 is provided. Then, fitting holes 20 corresponding to the shape of the head 15b of the headed pin 15 are formed at the position of the bottom surface portion 19 of the treatment tooth portion 18a and the position of the bottom portion 19 of any non-treatment tooth portion 18b.

On the other hand, as shown in FIG. 5, the filling recess 13 of the lower base material 3 has hollow sleeves 14, 14,... Corresponding to the fitting holes 20, 20,. The head pins 15 are fitted with the heads 15b protruding respectively, and the other hollow sleeves 14 except for the hollow sleeve 14 into which the headed pins 15 are fitted are filled with the headless pins 16 and the bottom surface 13a of the filling recess 13 and the surface. One fits each.

Next, after performing the above-described pretreatment on the gypsum tooth model 18 and the lower base 3, a fitting hole 20 formed in the bottom 19 of the gypsum model 18, Fluid gypsum C is poured into the filling recess 13 of the base material 3, and the bottom portion 19 of the gypsum dentition model 18 is adhered from above along the tooth row on the lower base material 3 side (FIG. 6A).

Separately from the above, the same pretreatment is performed on the gypsum dentition model (not shown) on the upper jaw and the upper base material 2 which are separated from the impression of the patient. The processing of the headed pin 15 for the site 18a is omitted, and only the preprocessing for the non-treated tooth site is performed.

Thereafter, when the fluidized gypsum C is completely hardened after the required time has elapsed, as shown in FIG. 6B, the fixing of each headed pin 15 and the plaster tooth model 18 is completed. ,
Treated tooth site 18a and adjacent non-treated tooth site 18b
Is cut with a precision saw, and the headed pin 15 of the treatment tooth portion 18a is pressed out from below and pulled out to form a crown or denture of a required restoration on the gypsum dentition portion of the detached treatment tooth portion 18a. This is returned to the corresponding portion of the gypsum dentition model 18 again.

Then, the upper dental plaster dental model and the formation of the crown of the restoration or the formation of the denture as described above are treated at the treatment tooth site 1.
8a, the lower gypsum dental model 18 on the lower jaw side is mounted on the upper and lower base materials 2 and 3, respectively, and the lower surface of the support surface 10 of the articulator 1 and the fixed frame 4 which is also used as a support table. The incisal guide pin 9 is appropriately adjusted so that the occlusion between the gypsum dentition model 18 including the treatment tooth portion 18a and the maxillary gypsum dentition model facing the gypsum dentition model 18 is optimal. Correction and processing of the occlusal state at the treatment tooth portion 18a are repeatedly performed.

Since the present invention is configured as described above,
In processing and shaping the treatment tooth region using the gypsum tooth model, the headed pins 15 are fitted into all the hollow sleeves 14 on the upper and lower base materials 2 and 3, and the headed pins 15 are inserted. 1
5. The gypsum dental model is accurately and easily mounted on the base with the necessary and sufficient number of headed pins 15 without performing a high level technique of fixing the plaster dental model and a large amount of production time. Can be fixed to the material, and the headed pin 1
For the hollow sleeves 14 other than the hollow sleeve 14 into which the wire 5 is inserted, only the operation of inserting the headless pin 16 which does not require any special technique is performed, so that the same operation can be performed simply by replacing the headless pin 16 simply. The base material can be easily shared by gypsum dentition models having different treatment tooth sites for each patient.

Since the number of the headed pins 15 of the plaster model 18 fitted in the hollow sleeve 14 is small, the plaster model 18 fixed to the upper and lower base materials 2 or 3 is used.
When removing the hollow sleeve 1
Compared with the conventional configuration that fits into all of the components 4, there is no need to apply an excessive release force, and the base materials 2, 3 or the plaster dentition model 3 are prevented from being damaged or deformed, and processed and modified. High accuracy in work can be maintained.

In the above embodiment, the upper and lower base members 2 and 3 are each formed of a highly rigid synthetic resin material. However, the present invention is not limited to this. For example, aluminum and other metal alloys may be used. The upper and lower base materials 2 and 3 may be formed using a highly rigid material such as a raw material, a gypsum material, or a ceramic material.

FIG. 7A shows that the above-mentioned upper and lower base materials 2 and 3 are divided into three tooth row ranges, and each divided member X, Y,
This shows a case where each of the divided members X, Y, and Z is configured such that a concave surface portion 21a and a convex surface portion 21b are opposed to each other. Positioning when used as an integral base material is performed by matching between the respective surface portions 21a and 21b, and mounting portions X1, Y1, and Z1 for mounting to the fixed frame 4 or the support surface 10 of the articulator 1 are provided as described above. Division member X,
Each of them is provided independently substantially at the center of Y and Z.

FIG. 7B shows a base material 2 for local treatment, which is used when only the front region of the dentition is to be treated.
FIG. 8 shows upper and lower base materials 2 with divided members X and Y that divide the tooth row range from the center position to the left and right.
3 and the base materials 2 and 3 are configured as in each of the above embodiments, so that the plaster is flexible and optimal depending on the degree of difficulty, position and scale of the treatment tooth site which differs for each patient. The dental model can be fixed.

[0023]

In short, according to the present invention, a plurality of hollow sleeves whose openings are flush with one surface of the base material are provided at predetermined intervals along the row of teeth in the base material for mounting an articulator. A plaster dentition model that is configured to be removably fixed to a base material via a fixing pin fitted into the hollow sleeve, the plaster dentition model including the treatment tooth portion buried in an upright shape and detached from the impression The main body of a headed pin having a head embedded in the treatment tooth portion, and a main body of a headed pin having a head embedded in any non-treatment tooth portion excluding the treatment tooth portion. The corresponding to the hollow sleeve embedding position on the base substrate side corresponding to each, drooping from the bottom of the gypsum dentition model, and the other hollow sleeve except for the hollow sleeve into which each headed pin fits, the top is Headless pin flush with one side of base material The plaster dentition model with different treatment teeth for each patient can be installed by changing the insertion position of the headless pin with respect to the same base material. A plurality of hollow sleeves, the opening surface of which is flush with one surface of the base substrate, are buried in a standing shape at predetermined intervals along the dentition, and a plaster dentition model including a treatment tooth portion detached from the impression, In order to removably fix the hollow sleeve to the base material via a fixing pin fitted into the hollow sleeve, the hollow sleeve matching the treatment tooth portion and the hollow sleeve matching any non-treatment tooth portion of the plurality of hollow sleeves A first step of fitting a headed pin having a head protruding from one surface of the base material, and other hollow sleeves except the hollow sleeve in which the headed pin is fitted in the first step. Nothing equal to one side of the wood A second step of inserting a pin, and a third step of fixing the bottom of the gypsum dentition model including the treatment tooth portion and the head of the headed pin protruding from one surface of the base material via fluid gypsum. Since it has a process, it is necessary to clean and remove the complicated and sophisticated configuration of the plaster dentition model in which a large number of headed pins are fitted and fixed, and the upper and lower base materials, as well as the necessary and sufficient number. The gypsum dental model can be accurately and easily fixed to the base material with the headed pins of the above, and the number of headed pins of the plaster tooth model fitted in the hollow sleeve is small, so When removing each fixed gypsum dental model, it is not necessary to apply excessive force, and it is possible to prevent damage and deformation to the base material or gypsum dental model beforehand, and to achieve high precision in processing and correction work. Can be maintained. For hollow sleeves other than the hollow sleeve into which the headed pin is inserted, it can be promptly dealt with only by the work of inserting the headless pin, which does not require any special technique, and the plaster with different treatment teeth for each patient. Even when performing a variety of processing and correction work by attaching and fixing the dental model to the same base material, the work can easily proceed without a decrease in accuracy by simply replacing the headless pin. As a result, it is possible to reduce the work load, shorten the production time, and reduce the production cost. Further, the base material is formed of a high-rigidity synthetic resin material, a metal alloy material, a gypsum material or a ceramic material, and has a U-shaped filling recess in a plan view in which fluid gypsum is retained on one surface of the base material. Is formed along the dentition, so that the plaster dentition model can be easily fixed in a fixed position and easily attached and detached while securing the fixing force between the gypsum dentition model and the headed pin fitted and fixed thereto. Characteristics can be compatible, and even when used repeatedly, the effect of aging can be suppressed as much as possible to maintain high accuracy, and injection molding, die molding, etc. suitable for each of the above materials can be performed. A base material that can be mass-produced by a manufacturing method and has uniform and high accuracy can be provided at low cost to a user engaged in dental treatment.
In addition, the base substrate is divided into two or more tooth ranges,
Since each of the divided members is configured to be used independently, the minimum gypsum dentition model required for the treatment according to the degree of difficulty, the position and the scale of the treatment tooth site that differs for each patient, Since it is possible to use only the base material of the corresponding site, it is possible not only to efficiently and optimally fix the plaster dental model, but also to perform the work required for fixing the plaster model to the base material. Time and cost can be reduced. And so forth, which are useful new effects.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of an articulator.

FIG. 2A is a side view of a base substrate. (B) is a top view same as the above.

FIG. 3A is an enlarged side sectional view along a tooth row of a base material. (B) is an essential part sectional view showing a state where a headed pin was fitted in a hollow sleeve. (C) is a sectional view of an essential part showing a state in which a headless pin is fitted into a hollow sleeve.

FIG. 4A is a plan view of a gypsum dentition model. (B)
Is a side view in which a part of a gypsum tooth model is sectioned.

FIG. 5 (a) is a plan view of a base material showing a state where a headed pin and a headless pin are fitted. (B) is an enlarged sectional side view along a dentition of a base material in which a headed pin and a headless pin are fitted.

FIG. 6 (a) is a partial cross-sectional side view showing a state in which a gypsum dentition model is fixed to a base material via a headed pin.
(B) is a partial cross-sectional side view of the same showing a state where the treatment tooth site is detached.

FIG. 7A is a plan view of a base material showing a configuration in which a tooth row range is divided into three. (B) is a plan view of a base material for local treatment used when only the front region of the dentition is to be treated.

FIG. 8 is a plan view of a base material in which a tooth row range is divided right and left from a center position.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Articulator 2 Upper base material 3 Lower base material 14 Hollow sleeve 15 Headed pin 15a Main part 15b Head 16 Headless pin 18 Gypsum dentition model 18a Treated tooth part 18b Non-treated tooth part

Claims (4)

(57) [Claims] A plurality of hollow sleeves, each having an opening flush with one surface of the base material, are buried in the base material for mounting an articulator at predetermined intervals along a row of teeth, and an impression is formed. A gypsum dentition model mounting and fixing device configured to removably fix a gypsum dentition model including a more detached treatment tooth site to a base material via a fixing pin fitted into the hollow sleeve, The main body of a headed pin having a head embedded in the above-described treatment tooth portion and the main body of a headed pin having a head embedded in any non-treatment tooth portion other than the treatment tooth portion are respectively provided with base bases corresponding to the respective head bases. At the same time as the hollow sleeve embedding position on the material side, it hangs down from the bottom of the gypsum dentition model, and the top of the other hollow sleeve except the hollow sleeve into which each of the headed pins fits is flush with one surface of the base material. The headless pin that makes A gypsum dental model mounting / fixing device, wherein gypsum dental model models having different treatment tooth sites can be mounted by changing a fitting position of a headless pin to the same base material. 2. A plurality of hollow sleeves, each having an opening surface flush with one surface of the base material, are buried in the base material for mounting an articulator at predetermined intervals along a row of teeth, and an impression is formed. To fix the gypsum dentition model including the more detached treatment tooth portion to the base material via a fixing pin fitted into the hollow sleeve, the plaster dental model matches the treatment tooth portion of the plurality of hollow sleeves. A first step of fitting a headed pin having a head protruding from one surface of the base material into the hollow sleeve and a hollow sleeve corresponding to an arbitrary non-treatment tooth portion, and inserting the headed pin in the first step. A second step of inserting a headless pin flush with one surface of the base material into another hollow sleeve other than the fitted hollow sleeve; a bottom portion of the gypsum dentition model including a treatment tooth portion; With the head of a pinned pin protruding from one side of the material And a third step of fixing the gypsum via fluidized gypsum. 3. The base material is formed of a high-rigidity synthetic resin material, a metal alloy material, a gypsum material or a ceramic material, and has a U-shape in plan view on one surface of the base material where fluid gypsum is retained. 2. The gypsum dentition model mounting and fixing device according to claim 1, wherein the filling concave portion is formed along the dentition. 4. The gypsum dentition according to claim 1, wherein the base material is divided into two or more dentition ranges, and each of the divided members can be used independently. Model fixing device.