Biomimetic type preformed ceramic abutment of implanted tooth and preformed crown thereof

Abstract

The invention relates to a biomimetic type preformed ceramic abutment of an implanted tooth and a preformed inner crown thereof, belonging to the field of implant restoration of dentition defect or dentition deletion of an oral cavity and aiming at improving the appearance, shape and color, strengthening retention and reducing microleakage. The technical scheme of the invention is as follows: the implant denture restoration is matched with different preformed ceramic abutments according to different teeth positions, i.e., the upper parts of the implants with implanted alveolar bones are matched with preformed ceramic abutments according to different teeth positions; the preformed ceramic abutment comprises a lower part structure inserted into the implant, a middle part structure imitating the shape of the neck of a natural tooth and an upper part structure imitating the form of tooth preparation of the natural tooth; and the outer surface of the upper part structure of the preformed ceramic abutment is matched with the preformed inner crowns of initial dental crowns of different teeth positions. The invention is applicable to the implant restoration of dentition defect or dentition deletion of the oral cavity, especially the deletion restoration of anterior teeth with higher requirement for beauty.

Description

technical field [0001] The invention relates to an artificial dental implant, in particular to a bionic prefabricated porcelain abutment and a prefabricated inner crown of a dental implant. It is suitable for implant restoration of oral dentition defects or loss of dentition, especially the restoration of missing anterior teeth with high aesthetic requirements. Background technique [0002] Implant restoration of defective or missing oral dentition has been carried out for more than 40 years in the world and more than 20 years in China. The ten-year success rate of implant restoration is over 95%, which shows that the application of implant technology in this field has been perfected day by day. However, the goal of modern restorative dentistry is not limited to "restoring the maximum oral function", but to strive to achieve "the best aesthetic effect" at the same time, especially the restoration of implant dentures in the aesthetic area of ​​the anterior teeth. [0003] De...

AI Technical Summary

Problems solved by technology

The defects of the prefabricated abutment structure are: 1) The abutment is made of titanium metal, although the titanium metal can basically meet the clinical needs in terms of function, but in terms of aesthetic effect, if the gingiva in the edentulous area is too thin Or gingival recession can make the metal color of the abutment appear, which affects the aesthetics, especially in the aesthetic area of ​​the anterior teeth. For patients with a high smile line, the appearance or exposure of the titanium metal color of the gingival margin will undoubtedly make the aesthetic restoration effect of the implant denture remarkable. Reduced; 2) The existing preformed abutment has a single shape, generally only a truncated cone, and is not designed according to the shape of the anterior teeth, premolars and molars. Not only does it not conform to the shape characteristics of natural teeth, the simulation is poor, and the anti-rotation function 3) The bonding surface between the abutment and the crown is large and direct, and the use of adhesive may not only reduce the adhesion between the crown and the abutment, but also increase the irritation to the gums due to excess adhesive

Although the ceramic sleeve can cover the appearance of the titanium metal on the neck of the implant, it cannot effectively cover the metal color of the neck of the titanium abutment, and its shape and structure are single, which is essentially different from the porcelain abutment, and there is no difference in the use of color. subdivided, so the above-mentioned shortcomings have not been completely overcome

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