JP2890084B2 - Method of manufacturing denture base - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001] The present invention relates to a method of manufacturing a complete denture for use in dental treatment.

[0002]

A method of manufacturing the prior art] with beds full denture is present in some of the change by the physician and dental technician, after obtaining the impression of the patient by the impression material, the work Gomo type by passing a muddy gypsum to this Then, a base floor is manufactured using a resin or a compound on the working model, and an occlusal ridge is attached to manufacture a trial application occlusal floor. Try-for bite plate to be mounted in the mouth height of the patient, attached to the articulator After determining the occlusal plane by adjusting the direction及beauty movement like, wax denture after this artificial tooth 14 was one by one implanted Create Next, the wax denture is re-attached into the patient's mouth, and the height, direction, and movement are readjusted again to remove extra parts , and this is replaced with the stone in the flask.
After embedding in plaster and curing the gypsum, wax denture wax
, And inject resin into the part,
Heat for about 40 minutes to polymerize and cure the resin to form an integral denture. Subsequently, complete finishing is performed to obtain a complete denture with a bed.

[0003] As described above, the preparation of a bed complete denture is mainly performed by hand from the viewpoint of aesthetics based on the mouth shape and face shape of each patient, and requires many steps and time. In addition, there are many repetitions of measurement and adjustment work, which greatly degrades work efficiency, requires a lot of man-hours, increases the manufacturing cost, and requires one Even in a hurry, it took more than a few days.

[0004]

[Problems to be Solved by the Invention] It is common practice to rationalize these points, to simplify the process, and to improve the efficiency. In particular, artificial organs such as dentures inserted into the oral cavity require various conditions, and thus have a problem that they cannot be easily reformed. Although it is difficult to simplify the above-described manufacturing process, the present invention creates a denture base in which denture arrangement is performed in advance with a ready-made base plate, and modifies the joint according to the patient's work model and joins it. by, by reducing cutting the number as factory for denture production, is intended as measured to be commercialized at an early stage I or more.

[0005]

The present invention SUMMARY OF THE INVENTION are made of thermoplastic resin, the base plate being prefabricated in accordance with the patient's general mouth shape, foundation and heated pressed against the master model taken by impression a step of creating a floor, more the steps of the dental arch is fixed using the wax together dentition floor being prefabricated in foundation floor material can be deformed to fit the baseplate, bite plate for try- To create
It was realized. The base plate was achieved four to fit the mouth shape of the patient, magnitude three teeth, the color number reduction of about Engineering by placing prefabricated two types of dentition floor.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for manufacturing a denture base according to the present invention will be described with reference to the drawings. FIG. 1 shows a procedure for manufacturing a denture base for an upper jaw, and FIG. 1 (A) shows a working model 1 for an upper jaw of a patient obtained by using an impression material. Fig. 1 ( B ) shows a base plate for an upper jaw, which constitutes a denture base, that is, a denture base. This base plate is made of a thermoplastic material in advance, and is used for the upper jaw obtained in FIG.
It can be deformed by heating to match the impression of the working model . FIG. 1C shows a dentition bed 3 in which gingiva and dentures are arranged. The gingiva is manufactured in advance using silicone rubber or the like so that it can be slightly deformed according to the shape of the oral cavity of the patient. FIG. 1 (D) shows a base plate 2 for an upper jaw.
And the denture base 3 consisting of
These are combined with the working model 1 and are the trial application bite floor 4.

[0007] Figure 2 shows a denture manufacturing steps for the lower jaw, FIG. 2 (A), the master model 5 for the lower jaw, FIG. 2 (B) below
Jaw base plate 6, Fig. 2 (C) arranges gingiva and denture
The dentition bed 7 and FIG. 2 (D) show the base plate 6 for the lower jaw.
And the denture base 7 consisting of
These are combined with the working model 5, and are trial application bite floors 8. FIG. 3 shows a state in which the trial application bite floor 4 for the upper jaw and the trial application bite floor 8 for the lower jaw are attached to the articulator 9 for trial application .

A method of manufacturing a denture using the working model for upper and lower jaws, a base plate, and a dental row will be described in the order of steps. First step: a floor base surface and the floor periphery in the state of the patient's jaw where the foundation for receiving an impression taken denture by hand stand functionally form, prime the impression material to the tray, by pressing the upper or lower jaw This is a step of obtaining a rough impression for the upper jaw and the lower jaw by acquiring the shape. This step is no different from the conventional method.

Second step: preparation of plaster model Mud gypsum is poured into a schematic model of the impression taken in the first step, and this is cured to prepare a working model for the upper jaw and the lower jaw using gypsum. This step is not different from the conventional one.

Third step: occlusal floor preparation Using the working model prepared in the second step as a matrix, a base floor 2 or 6 for the upper jaw and the lower jaw is prepared. Oh et beforehand create the base plate 2 or 6 had been <br/> Mounting the working model 1 or 5, while heating is plastically deformed to press shaping, the base floor to match the working model <br/> type Create As described above, since the base plate 2 or 6 is made of a resin having thermoplasticity, it is easy to match the shape of the patient's mouth. However, since the shape of the mouth varies from person to person, it is oversized. It is necessary to prepare a base plate which is divided into large, medium and small. This is to determine the size of the work model of the patient who came to the hospital by classifying it by statistical methods,
This can be realized by mass production using a mold or the like.

Fourth step: Arrangement of artificial teeth A dental bed 3 or 7 prepared in advance is attached to the base floor 2 or 6 obtained in the third step and fixed with wax to apply the trial application bite floor 4 or Get 8. This step corresponds to the occlusal sampling and the artificial tooth arrangement of the conventional method. The dentition bed 3 or 7 is made of a deformable material such as silicone rubber so that the dental arch of the gingival part can be slightly deformed according to the shape of the patient's mouth. In addition, artificial teeth to be implanted on the dentition floor are large, medium,
About three kinds of small tooth sizes are necessary, and the color needs about two kinds of colors with white and slightly yellowish tint. The dentition bed 3 or 7 is obtained by grasping the tooth profile of the patient by using a statistical method as described above, and is prepared and prepared in advance in accordance with the dentition.

Fifth step: trial fitting The trial bite bed obtained in the fourth step is mounted in the patient's mouth, and the upper and lower jaw relations are adjusted while slowly biting, and the tooth is placed on the tooth using a bite paper or the like. To mark. In this process
The trial bite bed is completed. Sixth Step: Correction Occlusion Adjustment A trial application occlusal floor with a mater is attached to the articulator 9 , and the upper and lower teeth are occluded to investigate an error relationship, and the early contact portion is cut and adjusted with a technical handpiece. The cutting portion at this time is cut mainly around the depression and the slope, and the cusp tip is not cut.

The subsequent steps follow the conventional steps for manufacturing a complete denture with a floor, but the procedure will be briefly described. Seventh step: trial application occlusal floor burial The trial occlusal floor for the upper jaw and the lower jaw modified in the sixth step are respectively placed in a flask, immersed in gypsum and cured. Step 8: Dewaxing When the gypsum in the flask has hardened, remove the gypsum, divide it into two, and immerse it in the base plate of the trial application bite bed.
Silicone rubber Ya dentition floor over preparative and for the upper jaw and for the lower jaw
Remove the wax . Since this process requires perfection, pour hot water to remove the small amount of base press remaining on the gypsum inner surface.
Wash off the rubber, silicone rubber and wax to expose the gypsum fabric surface. Ninth step: applying a separating agent onto the separating agent coating stone plaster inner surface, and dried. Tenth step: Resin loading The resin is loaded into the gypsum to which the separating agent has been applied. Eleventh step: polymerization The flask charged with the resin is placed in boiling water and heated at 100 ° C. for 3 hours.
The resin is polymerized and cured for about 0 to 40 minutes. Twelfth Step: Polishing / Finishing The flask is opened, the polymer denatured resin denture is taken out of the plaster, and polished to complete the denture.

[0014] The new method of forming a denture with a complete denture has been described above. Among them, the third step is the occlusal bed preparation and the fourth step is the artificial tooth arrangement. Will be described in more detail. Using a gypsum working model as a master, create base floors for the upper and lower jaws, build up a compound etc. on this and attach an occlusal ridge, adjust the height, direction and movement, etc. to determine the occlusal plane I do. After the occlusal plane is determined, the occlusal floor is trial-fitted in the patient's oral cavity, the function is formed by adjusting the margins, and the compatibility is adjusted to complete the occlusal sampling. This was mounted on an articulator, and the denture and denture base height, and the quality of movement were investigated.
Correct any nonconformities. While removing the occlusal ridge that was raised with a compound, etc., artificial teeth were planted one by one, and extra gingival gums etc. were removed and shaped to prepare an aesthetic denture outline, and a wax denture was formed. create. Early occlusal contact is confirmed using occlusal paper or the like to determine whether all teeth are evenly in contact with occlusal contact, and correction such as deletion of the contact portion is performed. The wax denture is inserted into the patient's mouth again, and the height, directional movement and the like are adjusted to complete the wax denture.

[0015] As described above, the conventional method of a manual one by one, but the work efficiency is extremely bad, because the human oral cavity shape is infinite variety, Yes that matches the oral cavity shape This was an inevitable process to obtain a complete denture. Production method of the present invention to which, as mentioned above, create a base plate having a thermoplastic previously created
Create a base floor by heating and pressing on the work model, and on this base floor,
Manufactured from silicon rubber etc. created in advance,
By fixing the deformable dental bed with wax,
This step can be completed in a very simple way, that is to complete the artificial tooth arrangement. Although the present embodiment has been described as creating a denture with a complete bed, the same applies to the case of partial artificial teeth.
Flip taken out by cutting only missing tooth part as basic
By bonding to the floor to create a denture, it can also be applied to partial denture bases.

[Effects of the Invention] As described above as an embodiment, according to the present invention, it is only necessary to press and shape a base plate, which has been previously adjusted to the shape of a patient's general oral cavity, onto a working model.
The base of denture is created, and the occlusal bed can be created simply by fixing the deformable dentition base to the base using wax, so the work process follows the conventional method. Can be expected to greatly reduce the number of work steps.
In addition, since gingival formation and artificial tooth implantation are performed in advance according to a standard mold such as a mold, an unskilled person can create an artificial dentition bed.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view of a procedure for manufacturing a maxillary denture.

FIG. 2 is a view showing a procedure for manufacturing a lower denture for an embodiment.

FIG. 3 is an explanatory view in which upper and lower dentures are attached to an articulator.

[Explanation of symbols]

1: Working model 2: Maxillary base plate 3: Maxillary dentition bed 4: Maxillary trial occlusal bed 7: Lower jaw dentition floor 8: Lower jaw trial occlusal bed 9: Articulator

Claims (4)

(57) [Claims] 1. A fabricated with a thermoplastic resin, the base plate being prefabricated in accordance with the patient's general mouth shape, and hot-pressing the master model taken by impression
More a step of creating a group Ishizueyuka, and fixing using a wax together dentition bed dental arch is pre-fabricated from a material that can be deformed to fit the underlying floor foundation floor,
A method for producing a complete denture with a bed, characterized in that a trial bite bed is created. 2. The method according to claim 1, wherein four types of base plates are manufactured in advance to match the shape of the patient's oral cavity. 3. A method for manufacturing a complete denture with a floor according to claim 1, wherein a dental dentition in which three types of teeth are selected in consideration of a patient's face type and esthetics is prepared in advance. . 4. The method according to claim 3, wherein the artificial tooth to be planted is composed of two kinds of teeth having a white tint and a slightly yellow tint. [0015]