CN105167869A - A manufacturing process of partial denture finished resin teeth - Google Patents

Abstract

The invention relates to the technical field of detachable partial denture manufacture, in particular to a process for manufacturing a partial denture finished product resin tooth, which comprises the following steps: (1) designing a snap ring; (2) local tooth arrangement; (3) designing a base; (4) manufacturing a wax dike; (5) fitting; (6) and (3) reversing the mold: the teeth after tooth arrangement are made into a plaster female die by using plaster reverse die, and the teeth are left in the plaster female die; (7) resin injection: placing the plaster female die on the tooth malformed part of the tooth plaster model, and injecting resin into the gap on the inner side of the plaster female die; (8) and (3) press hardening: and (3) putting the tooth plaster model into a pressure cooker, pressurizing and hardening, cooling, and removing the plaster female die to obtain the finished product of the resin tooth of the partial denture. According to the invention, the plaster female die is directly placed on the tooth malformed part of the tooth plaster model and the resin is injected, so that the use amount of the plaster is reduced by more than 80% compared with that of the traditional embedding method, the production cost is reduced by more than 70%, the method is simple, the operation and the control are convenient, and the production efficiency is improved by more than 25%.

Description

A manufacturing process of partial denture finished resin teeth

technical field

The invention relates to the technical field of manufacturing detachable partial dentures, in particular to a manufacturing process of finished resin teeth of partial dentures.

Background technique

Removable partial denture is a kind of restoration that uses natural teeth and mucous membrane as support, and is retained by the retainer and base of the denture to repair the defects of the dentition and adjacent tissues, and can be taken and worn by the patient. . Removable partial dentures have the advantages of wide indications, good restoration effect, and easy fabrication, and are widely used in clinical work. Especially in primary medical units, the restoration of removable partial dentures has been used as a main restoration method for clinical dentition, providing restoration treatment for patients. Removable partial dentures are generally composed of basic functional parts such as clasps, rests, bases, and artificial teeth. The clasps are the metal parts of the removable partial denture attached to the surface of the crown of the abutment teeth, and have the functions of support, clamping, and retention. The rest is the supporting part of the clasp extending towards the abutment surface, which can keep the clasp at a certain position on the abutment and transmit the chewing pressure to the abutment; the base is the main component of the removable partial denture. Wearing dentures (artificial teeth), connecting the components of dentures into a whole, conveying masticatory force on the mucous membrane, and having the function of support and retention; abutment teeth are retention devices such as snap rings and rests in the patient's oral cavity To stabilize the teeth that retain the denture. The fifth edition of "Prosthodontics" edited by Ma Xuanxiang, published by People's Health Publishing House in 2003, describes in detail the existing removable partial denture and its manufacturing method in the 222nd to 242th pages in the fourteenth chapter. At present, the clasps, rests and bases of the existing removable partial dentures are all of an integrated structure. The removable partial dentures are divided into tooth-supported, mucosa-supported and mucosa-abutment joint support according to different supporting tissues. three forms. Tooth-supported removable partial dentures, because of the clasp directly fixed on the abutment teeth, have good retention and clamping effects, and good denture stability, but the chewing pressure is mainly borne by the abutment teeth, so it is not suitable for loosening of the remaining teeth , patients with poor periodontal condition; mucosa-supported removable partial denture without clasp support, although it can be adapted to patients with most missing teeth, loose remaining teeth, and relatively poor periodontal condition, but its retention and clamping effect Poor, when the denture performs its functions, it is prone to axial and lateral displacement. Since the restoration of removable partial dentures has certain requirements on the oral condition of the patient and the health of the abutment teeth, the restoration effect is not ideal for patients with I-II degree loosening of the abutment teeth or poor periodontal condition, and the abutment teeth are easy to loosen and fall off, and the survival rate is low. Low. The restorative treatment of these patients often fails due to the loosening and loss of abutment teeth. This phenomenon is often encountered in clinical work. Although there are many improved methods for the restoration of removable partial dentures reported at home and abroad, the restoration effects are not very satisfactory.

When embedding existing partial dentures, the entire tooth plaster model needs to be put into the embedding box, filled with plaster, and then boiled to make the teeth stick to the plaster groove, and then resin is applied to the roots of the teeth and placed in the tooth Plaster model, put the tooth plaster model into the embedding box again for boiling, open and remove the plaster to make a partial denture. However, this method needs to waste a large amount of gypsum for embedding, and the production cost is high.

Contents of the invention

In order to overcome the shortcomings and deficiencies in the prior art, the object of the present invention is to provide a manufacturing process of a partial denture finished resin tooth, which reduces the amount of plaster used by more than 80% compared with the traditional embedding method, and has low production cost. The method is simple, the operation and control are convenient, and the production efficiency is high.

Another object of the present invention is to provide a finished partial denture resin tooth. The finished partial denture resin tooth has the characteristics of comfortable wearing, good taste, good recovery of occlusal force, good retention and stability, and good effect on abutment teeth. Protective effects.

The object of the present invention is achieved through the following technical solutions: a manufacturing process of partial denture finished resin teeth, comprising the steps of:

(1) Clasp design: Design a wire clasp according to the shape and size of the dental arch of patients with dental deformities;

(2) Partial tooth arrangement: local tooth arrangement is performed on the deformed part of the tooth plaster model;

(3) Base design: design the base on both sides of the teeth after the teeth are arranged;

(4) Fabrication of wax embankment: wax embankment is made with wax on the plaster model of teeth, and the teeth after teeth arrangement are arranged on the embankment;

(5) Try-in: Put the teeth after the arrangement into the mouth of the patient with deformity and try it on. If the patient feels uncomfortable, adjust the occlusal adjustment of the teeth after the arrangement on the embankment;

(6) Molding: Invert the teeth after the row of teeth with gypsum to make a gypsum negative mold, and keep the teeth in the gypsum negative mold;

(7) Resin injection: place the plaster negative mold on the tooth deformity of the tooth plaster model, and inject resin into the inner gap of the plaster negative mold;

(8) Pressure hardening: put the plaster model of the tooth into a pressure cooker and harden it under pressure, remove the gypsum negative mold after cooling, and obtain the finished resin tooth of the partial denture.

The production process of the present invention directly places the gypsum negative mold on the deformed teeth of the tooth gypsum model and injects resin, which reduces the amount of gypsum used by more than 80% and the production cost by more than 70% compared with the traditional embedding method. The method is simple and the operation is controlled. Convenience, production efficiency increased by more than 25%.

Preferably, in the step (1), the manufacturing process of the tooth plaster model includes the following steps:

A. Impression taking: Obtain the positive impression of the tooth of the patient with dental deformity;

B. Grinding: Grinding the ground, inner lingual surface, and outer buccal surface of the male mold of the teeth;

C. Nail insertion: open multiple grooves on the bottom surface of the polished tooth male mold, fill the grooves with glue and insert nails, and set a rubber sleeve on the top of each nail;

D. Yellowing: Scrape and coat a layer of anhydrite on the bottom surface of the tooth male mold, take an anhydrite base that matches the bottom surface of the tooth male mold, and open a through hole that matches the nail in the middle of the anhydrite base. Apply ordinary plaster on the bottom and outside of the anhydrite base, and form the abutment together with the base after hardening;

E. Upper abutment: Insert the nails of the positive mold of the teeth into the through holes of the anhydrite base;

F. Scraping: Scrape off the anhydrite at the connection between the tooth male mold and the base;

G. Digging the nail hole: hollow out the position corresponding to the nail at the bottom of the base, knock out the nail from the bottom of the base, and separate the positive mold of the tooth from the abutment;

H. Sawing: Saw the left and right sides of the teeth with deformed teeth on the male model of the teeth, and divide them into multiple parts;

1, write the model number: write the parting model number at the tooth root of each part of the tooth positive model, write the total model number on the inner side of the abutment, and make the tooth plaster model.

The manufacturing process of the tooth gypsum model of the present invention adopts the yellowing step to scrape and coat a layer of anhydrite on the bottom surface of the tooth male mold, and the abutment is composed of a small part of anhydrite and most of the ordinary gypsum, which can greatly reduce the amount of anhydrite. The dosage is more than 80%, and the production cost is reduced by more than 40%.

The manufacturing process of the tooth gypsum model of the present invention sets a rubber sleeve on the top of the nail, and the rubber sleeve and the nail are inserted into the through hole together and then hardened, and then fixed on the top of the through hole, so that the nail and the rubber sleeve are socketed to prevent the abutment from falling off , simple in structure and easy to use.

The tooth gypsum model of the invention has a simple manufacturing process, convenient operation and control, increased production efficiency by more than 20%, and low production cost.

Preferably, the step A specifically includes: firstly, using dental silicone rubber material to obtain a dental negative mold of a patient with deformed teeth, and then filling the dental negative mold with anhydrite to form a positive tooth mold.

Preferably, after the step B, step B1 is also included, leveling up: using anhydrite to fill up the gaps or uneven places on the surface of the polished tooth male model.

Preferably, step I1 is also included after the step I, removing air bubbles: removing air bubbles on the surface of the tooth plaster model.

Another object of the present invention is achieved by the following technical solution: a finished partial denture resin tooth, which is produced according to the above-mentioned manufacturing process.

The finished partial denture resin tooth of the present invention has the advantages of comfortable wearing and good taste, good recovery of occlusal force of patients, good retention and stability, and good protection effect on abutment teeth. It is especially suitable for patients with I-II degrees of loose abutment teeth, poor periodontal conditions, more tooth loss, and patients with poor results when the designed retention is stable.

The beneficial effect of the present invention is that: the production process of the present invention directly places the gypsum negative mold on the deformed teeth of the tooth gypsum model and injects resin, which reduces the amount of gypsum used by more than 80% compared with the traditional embedding method, and reduces the production cost by 70% Above, the method is simple, the operation and control are convenient, and the production efficiency is increased by more than 25%.

The finished partial denture resin tooth of the present invention has the advantages of comfortable wearing and good taste, good recovery of occlusal force of patients, good retention and stability, and good protection effect on abutment teeth. It is especially suitable for patients with I-II degrees of loose abutment teeth, poor periodontal conditions, more tooth loss, and patients with poor results when the designed retention is stable.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the examples, and the contents mentioned in the embodiments are not intended to limit the present invention.

Example 1

A manufacturing process of a partial denture finished resin tooth, comprising the steps of:

(1) Clasp design: Design a wire clasp according to the shape and size of the dental arch of patients with dental deformities;

(2) Partial tooth arrangement: local tooth arrangement is performed on the deformed part of the tooth plaster model;

(3) Base design: design the base on both sides of the teeth after the teeth are arranged;

(4) Fabrication of wax embankment: wax embankment is made with wax on the plaster model of teeth, and the teeth after teeth arrangement are arranged on the embankment;

(5) Try-in: Put the teeth after the arrangement into the mouth of the patient with deformity and try it on. If the patient feels uncomfortable, adjust the occlusal adjustment of the teeth after the arrangement on the embankment;

(6) Molding: Invert the teeth after the row of teeth with gypsum to make a gypsum negative mold, and keep the teeth in the gypsum negative mold;

(7) Resin injection: place the plaster negative mold on the tooth deformity of the tooth plaster model, and inject resin into the inner gap of the plaster negative mold;

(8) Pressure hardening: put the plaster model of the tooth into a pressure cooker and harden it under pressure, remove the gypsum negative mold after cooling, and obtain the finished resin tooth of the partial denture.

In the step (1), the manufacturing process of the tooth plaster model includes the following steps:

A. Impression taking: Obtain the positive impression of the tooth of the patient with dental deformity;

B. Grinding: Grinding the ground, inner lingual surface, and outer buccal surface of the male mold of the teeth;

C. Nail insertion: open multiple grooves on the bottom surface of the polished tooth male mold, fill the grooves with glue and insert nails, and set a rubber sleeve on the top of each nail;

D. Yellowing: Scrape and coat a layer of anhydrite on the bottom surface of the tooth male mold, take an anhydrite base that matches the bottom surface of the tooth male mold, and open a through hole that matches the nail in the middle of the anhydrite base. Apply ordinary plaster on the bottom and outside of the anhydrite base, and form the abutment together with the base after hardening;

E. Upper abutment: Insert the nails of the positive mold of the teeth into the through holes of the anhydrite base;

F. Scraping: Scrape off the anhydrite at the connection between the tooth male mold and the base;

G. Digging the nail hole: hollow out the position corresponding to the nail at the bottom of the base, knock out the nail from the bottom of the base, and separate the positive mold of the tooth from the abutment;

H. Sawing: Saw the left and right sides of the teeth with deformed teeth on the male model of the teeth, and divide them into multiple parts;

1, write the model number: write the parting model number at the tooth root of each part of the tooth positive model, write the total model number on the inner side of the abutment, and make the tooth plaster model.

The step A specifically includes: firstly, using dental silicone rubber material to obtain a dental negative mold of a patient with deformed teeth, and then filling the dental negative mold with anhydrite to form a dental positive mold.

Step B1 is also included after the step B, leveling up: using anhydrite to fill up the gaps or uneven places on the surface of the polished tooth male model.

Step I1 is also included after the step I, removing air bubbles: removing the air bubbles on the surface of the tooth plaster model.

The production process of the present invention directly places the gypsum negative mold on the deformed teeth of the tooth gypsum model and injects resin, which reduces the amount of gypsum used by more than 80% and the production cost by more than 70% compared with the traditional embedding method. The method is simple and the operation is controlled. Convenience, production efficiency increased by more than 25%.

The finished partial denture resin tooth of the present invention has the advantages of comfortable wearing and good taste, good recovery of occlusal force of patients, good retention and stability, and good protection effect on abutment teeth. It is especially suitable for patients with I-II degrees of loose abutment teeth, poor periodontal conditions, more tooth loss, and patients with poor results when the designed retention is stable.

The above-mentioned embodiments are preferred implementation solutions of the present invention. In addition, the present invention can also be realized in other ways, and any obvious replacements are within the protection scope of the present invention without departing from the concept of the present invention.

Claims (6)

1. a processing technology for partial denture sold resin tooth, is characterized in that: comprise the steps:

(1) clasp design: according to Arch width and the size of deformity teeth patient, design steel wire clamping ring;

(2) tooth is arranged in local: carry out local at the deformity teeth position of tooth plaster model and arrange tooth;

(3) base design: the tooth both sides design base after row's tooth;

(4) La Di makes: on tooth plaster model, make La Di with waxed, is arranged on La Di by the tooth after row's tooth;

(5) try on: the tooth after row's tooth is put into deformity teeth patient mouth and tries on, patient, if any discomfort, carries out Occlusal adjustment to the tooth after row's tooth on La Di;

(6) reverse mould: the tooth Gypsum Fibrosum reverse mould after row's tooth is obtained Gypsum Fibrosum former, and tooth is stayed in Gypsum Fibrosum former;

(7) resin is noted: deformity teeth position Gypsum Fibrosum former being placed on tooth plaster model, at gap, the inner side place resin by injection of Gypsum Fibrosum former;

(8) press quenching: tooth plaster model is put into pressure cooker press quenching, removing Gypsum Fibrosum former after cooling, obtained partial denture sold resin tooth.

2. the processing technology of a kind of partial denture sold resin tooth according to claim 1, is characterized in that: in described step (1), the processing technology of tooth plaster model comprises the steps:

A, delivery: the tooth formpiston obtaining deformity teeth patient;

B, polishing: the ground of tooth formpiston, inner side lingual surface, outside buccal surface are polished;

C, plug pin: multiple groove is offered in the bottom surface of tooth formpiston after polishing, fill glue and also insert nail in groove, and at the top of each nail a sheathed gum cover;

D, upper Huang: at bottom surface blade coating one deck anhydrite of tooth formpiston, get an anhydrite pedestal matched with the bottom surface of tooth formpiston, the middle part of anhydrite pedestal offers the through hole matched with nail, be coated with common gypsum in the bottom of anhydrite pedestal and outside, after sclerosis, form base station together with pedestal;

E, upper base station: the nail of tooth formpiston is inserted in the through hole of anhydrite pedestal;

F, scraping: the anhydrite scraping off tooth formpiston and pedestal junction;

G, dig nail: the position of corresponding nail hollows out in the bottom of pedestal, is pounded out by nail, tooth formpiston is separated with base station from base bottom;

H, to cut: tooth formpiston is had on the left of the tooth of deformity teeth and right side is cut, be divided into multiple part;

I, write pattern number: write a point pattern number at the root of the tooth place of each several part tooth formpiston, write total pattern number at the medial surface of base station, obtained tooth plaster model.

3. the processing technology of a kind of partial denture sold resin tooth according to claim 2, it is characterized in that: described steps A is specially: first with dental silicone material obtain deformity teeth patient tooth former, then on tooth former, record into tooth formpiston with anhydrite.

4. the processing technology of a kind of partial denture sold resin tooth according to claim 2, is characterized in that: also comprise step B1 after described step B, fill: the breach of the tooth male mold surfaces after polishing or rough place are filled with anhydrite.

5. the processing technology of a kind of partial denture sold resin tooth according to claim 2, is characterized in that: also comprise step I1, bubble removing after described step I: the bubble on removing tooth plaster model surface.

6. a partial denture sold resin tooth, is characterized in that: described partial denture sold resin root of the tooth obtains according to the processing technology described in any one of claim 1-5.