CN1141066C - The Technology of Restoring Missing Teeth Using Composite Ceramic Components - Google Patents

Abstract

The invention discloses a technology for repairing missing teeth by using a composite ceramic component. The composite zirconia component is used as the basis for repairing missing teeth in the human oral cavity, and the high strength and good bonding effect of the composite zirconia are used to achieve the driving function of supporting dentures. and retention purposes. The implementation of the present invention can reduce the grinding and cutting amount of tooth tissue in the existing restoration technology, and avoid the disadvantages of gingival edge damage, adjacent relationship being destroyed and the like.

Description

Utilize the technology of composite ceramic component repair to denture

One, technical field

The present invention relates to the Oral Repair in the medical domain, further relate to a kind of technology of utilizing the composite ceramic component repair to denture.

Two, background technology

At present, in the Oral Repair process in medical domain, absence of tooth all adopts technology such as fixed denture, removable denture, semifixed artificial tooth and implant denture to repair.Because generally speaking the characteristics of various artificial teeth and the difference of subject range, can carry out many employings fixed denture reparation of fixed and repaired.In fixed denture was repaired, current now method was that the natural tooth mill on missing tooth both sides is little, eliminate recessed, impression taking, make on the model wax pattern → metal casting → or on porcelain finish.In whole process; the subject matter that exists is; both sides nature tooth mill is little; in the time of can having a strong impact on the integrity of tissue of tooth, the intensity of destroying tooth, operating cost, effort, specification requirement height; the operating procedure strictness, otherwise the dummy of making can cause nature tooth recurrent caries or gingivitis, periodontitis etc.In addition, what the member of bridge adopted is metal, and also there are many problems in metal itself: the irritated and problems such as (precious metal material), complex manufacturing technology that cost an arm and a leg as burn into.In semifixed artificial tooth is repaired, adopt metal attachment technology to repair more, the key that during making the nature tooth is ground little → making complete crown → complete crown and attachment links together; The artificial tooth part links together with key way, then key and key way back in place just has been worn over artificial tooth on the nature tooth the same problems such as many, complicated operating process of grinding one's teeth in sleep that exist of this technology.

Three, summary of the invention

Defective or deficiency according to above-mentioned prior art partly exists the objective of the invention is to, and a kind of technology of utilizing composite ceramic component to repair agomphosis is provided, and to reduce the tissue of tooth mill amount of cutting, simplify the manufacturing process of artificial tooth, improve the agomphosis repairing effect; Preserve tissue of tooth; Do not destroy the syntopy of nature tooth, do not damage the gingiva and the periodontal tissue of nature tooth, reach less and grind one's teeth in sleep, omit the purpose of the manufacturing process of hardware.

To achieve these goals, technical conceive of the present invention is, utilizes the high-strength ceramic complex to make member, makes ceramic pontic on member, and the natural tooth on ceramic component that the pontic two ends are exposed and agomphosis both sides bonds together at last; Perhaps utilize high-strength ceramic to make key way, key way directly is bonded on the nature tooth again, the key that partly contains with agomphosis is connected, and reaches the reparation of semifixed artificial tooth.

The technical solution used in the present invention is:

Process route one:

1) prefabricated high strength zirconia ceramics member

The shape of zirconia ceramics member is made half garden shape or rectangle key way with zirconium oxide or aluminium oxide ceramics, with the inner face high polish of key way according to concrete Buccodental deletion condition design; Make the ceramic key way that matches with key way simultaneously, its size inner face proper and key way matches; Adopt dry-pressing or hot-forming prefabricated, and through the high temperature sintering molding;

2) making of composite ceramic component

On the high strength zirconia ceramics member of above-mentioned sinter molding, cover Sio ₂-K ₂O-Na ₂O-Al ₂O ₃-P ₂O ₅Layer carries out sintering again; Its sintering temperature is lower than the molding component temperature, forms glass-ceramic layer, with improve with the adhesion strength of tooth, with the coupling of pontic ceramic material thermal coefficient of expansion;

3) making of tooth preparation and model

On the natural tooth of agomphosis both sides, prepare out and shoulder that the alar part of composite ceramic component coincide impression taking then, perfusion plaster model;

4) adjustment of ceramic component

According to the size of edentulous space, grind the length of ceramic component, and on model, try to close;

5) making of ceramic pontic

After having debugged member on the model, begin to pile porcelain and form the pontic profile, sintering, correction of the flank shape, polishing, glazing, finish the making of pontic.

Process route two:

1) prefabricated high strength zirconium oxide or aluminium oxide ceramics member

Make half garden shape or rectangle key way with zirconium oxide or aluminium oxide ceramics, with the inner face high polish of key way; Make the ceramic key way that matches with key way simultaneously, its size inner face proper and key way matches;

2) close the making of ceramic component

On the high strength zirconia ceramics member of above-mentioned sinter molding, cover Sio ₂-K ₂O-Na ₂O-Al ₂O ₃-P ₂O ₅Layer, wherein Sio ₂Be 60%, K ₂O-Na ₂O respectively is 8%, Al ₂O ₃Be 20%, P ₂O ₅Be 4%, carry out sintering again; Its sintering temperature is lower than the molding component temperature, forms glass-ceramic layer, with improve with the adhesion strength of tooth, with the coupling of pontic ceramic material thermal coefficient of expansion;

3) tooth preparation

On the contiguous natural tooth of agomphosis, prepare out and the matched groove of key way, get seal, make plaster model;

4) making of agomphosis

Key way is temporarily cemented on the plaster model, and key is inserted key way, on key, form the agomphosis part.

Other characteristics of the present invention are described glass-ceramic layer Sio ₂-K ₂O-Na ₂O-Al ₂O ₃-P ₂O ₅, the about 0.2mm～0.3mm of its cover layer.

The present invention can significantly reduce the tissue of tooth mill amount of cutting, and simplifies the manufacturing process of artificial tooth, improves the artificial tooth repairing effect; Preserve tissue of tooth; Do not destroy the syntopy of nature tooth, do not damage the gingiva and the periodontal tissue of nature tooth.

Four, description of drawings

Fig. 1 is the pure zirconia or the aluminium oxide ceramics component diagram of the embodiment of the invention 1;

Fig. 2 is the pure zirconia or the aluminium oxide ceramics member of the embodiment of the invention 1 and has the glass-ceramic layer structure chart;

The model sketch map is produced in tooth body hypodontia preparation when Fig. 3 is the embodiment of the invention 1 reparation;

Fig. 4 is for installing the prefabricated components sketch map;

Fig. 5 is with dental polishing molding pontic and bonding sketch map on prefabricated components;

Fig. 6 is the ceramic key way component diagram of the embodiment of the invention 2;

The key component diagram of Fig. 7 for matching with ceramic key way.

Five, the specific embodiment

The present invention is described in further detail below in conjunction with drawings and Examples.

According to technical scheme of the present invention, adopt the specific embodiment as follows:

1. prefabricated high strength zirconium oxide or aluminium oxide ceramics member

1) utilize pure zirconia or aluminium oxide ceramics powder body, adopt dry-pressing or hot-forming prefabricated as Fig. 1,2 and Fig. 6,7 shown in member, and through the high temperature sintering molding;

2) adopting glass-ceramic layer is Sio ₂-K ₂O-Na ₂O-Al ₂O ₃-P ₂O ₅, Sio wherein ₂Be 60%, K ₂O-Na ₂O respectively is 8%, Al ₂O ₃Be 20%, P ₂O ₅Be 4%, the about 0.2mm～0.3mm of its cover layer, sintering again; Its sintering temperature is lower than the molding component temperature.

2. actual repair process

Introduce the concrete application of above-mentioned member below with actual case.

Repair mode embodiment 1: referring to Fig. 3～5, with Lack, with Be abutment, prepare out and the identical shoulder of the alar part of member shown in Fig. 1,2 in gap one side of abutment 5,7 earlier, delivery perfusion plaster model, the member shown in Fig. 1,2 is closed in examination on model then, reuse dental polishing molding pontic, the member dummy is closed in examination in mouth at last, and finish with resin bonding back in place.

Repair mode embodiment 2: referring to Fig. 6～7.

1) with

closely lack in side, grind the shallow trench roughly suitable with corundum car pin, delivery then, perfusion plaster model with member external form shown in Figure 6;

2) member shown in Fig. 3 a is bonded at lightly in the groove on the plaster model, and key member shown in Figure 7 is allocated with it suitable;

3) the disappearance corona is finished in heap porcelain molding on key member shown in Figure 7;

4) bonding finishing

Earlier the pontic of finishing is linked together with key member shown in Figure 7, examination is closed in placely in mouth again, and after adjustment was finished, the acid etching tooth was bonded in whole dummy on the abutment with resin.

Drawbacks such as enforcement of the present invention can reduce the tissue of tooth mill amount of cutting in the existing recovery technique, avoids the gingival edge infringement, and syntopy is destroyed can realize repairing agomphosis simple, quick, attractive in appearancely.

Claims (2)

1. A technique for utilizing composite ceramic components to repair missing teeth is characterized in that: utilize high-strength ceramic composites to make components, make ceramic pontics on the components, and finally connect the exposed ceramic components at both ends of the pontic to the two sides of the missing teeth. or use high-strength ceramics to make plugs, and then directly bond the plugs to the natural teeth, and connect with the plugs contained in the missing teeth, so as to achieve the restoration of semicircular fixed missing teeth; including the following Routing: Process route one: 1) Prefabricated high-strength zirconia ceramic components The shape of the zirconia ceramic component is designed according to the specific tooth loss in the oral cavity. The semi-circular or rectangular plugway is made of zirconia or alumina ceramics, and the inner surface of the plugway is highly polished; at the same time, the ceramic plugway that matches the plugway is made , whose size coincides with the inner surface of the plugway; it is prefabricated by dry pressing or hot pressing, and sintered at high temperature; 2) Fabrication of composite ceramic components The above sintered high-strength zirconia ceramic component is covered with ₅ layers of Sio ₂ -K ₂ O-Na ₂ O-Al ₂ O ₃ -P ₂ O, wherein Sio ₂ is 60%, K ₂ O-Na ₂ O 8% for Al ₂ O ₃ , 20% for Al 2 O 3 , 4% for P ₂ O ₅ , and then sintered; the sintering temperature is lower than the component molding temperature to form a glass-ceramic layer to improve the bonding strength with the teeth and bridge body Matching of thermal expansion coefficient of ceramic materials; 3) Tooth preparation and model making On the natural teeth on both sides of the missing tooth, the shoulders matching the wings of the composite ceramic component are prepared, and then the impression is taken and the plaster model is poured; 4) Adjustment of ceramic components According to the size of the missing tooth gap, adjust the length of the ceramic component and try it on the model; 5) Fabrication of ceramic bridge body After adjusting the components on the model, start to pile up porcelain to form the shape of the bridge body, sinter, modify the shape, polish, glaze, and complete the production of the bridge body; Process route two: 1) Prefabricated high-strength zirconia or alumina ceramic components Use zirconia or alumina ceramics to make semi-circular or rectangular bolts, and highly polish the inner surface of the bolt; at the same time, make a ceramic bolt that matches the bolt, and its size just matches the inner surface of the bolt; 2) Fabrication of composite ceramic components The above sintered high-strength zirconia ceramic component is covered with ₅ layers of Sio ₂ -K ₂ O-Na ₂ O-Al ₂ O ₃ -P ₂ O, wherein Sio ₂ is 60%, K ₂ O-Na ₂ O 8% for Al ₂ O ₃ , 20% for Al 2 O 3 , 4% for P ₂ O ₅ , and then sintered; the sintering temperature is lower than the component molding temperature to form a glass-ceramic layer to improve the bonding strength with the teeth and bridge body Matching of thermal expansion coefficient of ceramic materials; 3) Tooth preparation Prepare a groove suitable for the plugway on the natural tooth adjacent to the missing tooth, take an impression, and make a plaster model; 4) Making of missing teeth Temporarily cement the suppository on the plaster model, insert the plug into the suppository, and form the edentulous part on the plug. 2. The process for repairing missing teeth with composite ceramic components according to claim 1, characterized in that the glass-ceramic layer Sio ₂ -K ₂ O-Na ₂ O-Al ₂ O ₃ -P ₂ O ₅ is about 0.2mm ~ 0.3mm.

Images