Hollow abutment capable of connecting with interior of dental implant

Abstract

The invention discloses a hollow abutment capable of connecting with the interior of a dental implant. The hollow abutment is characterized in that an upper part of a repair part section (1) of the hollow abutment is a circular truncated cone of which sectional areas are increased from top to bottom; a lower part of the repair part section (1) is a regular eight-edge prism (1A) of which corners are cambered; the middle transition section (2) is a projecting circular truncated cone of which a side surface is cambered and sectional areas are decreased from top to bottom and is coated with a silver carrying TiO2 antibacterial coating; an upper part of an implant insertion section (3) is a circular truncated cone of which sectional areas are decreased from top to bottom and inclination is in a range of 10 to 12 degrees and an annular groove (3B) is arranged in the surface of the circular truncated cone of the implant insertion section (3); a silicone rubber gasket (3C) is embed into the annular groove (3B); and a lower part of the implant insertion section (3) is regular eight-edge prism (3A) of which corners are cambered. The hollow abutment has the advantages of good fretting damage resistance, good closure, strong corrosion resistance, good antibacterial property, good gum forming function and long service life.

Description

technical field [0001] The invention relates to a dental implant abutment for oral restoration. technical background [0002] With the development and perfection of osseointegration theory and decades of clinical practice, dental implant has become one of the key restoration techniques for oral tooth loss. Compared with traditional removable dentures and fixed denture restoration methods, dental implant has aesthetics and comfort. Higher, stronger chewing function and other advantages. Although recent studies have shown that dental implants have a five-year success rate of 96.1%. However, with the further extension of service time, the long-term success rate of dental implants has a tendency to further decrease. The success rate of 16-year follow-up in foreign countries is 82.94%, and the success rate of 11-15 years in China is 62.5%. In many dental implant failure cases, failure phenomena such as loosening of the connection between the dental implant and the abutment are ...

AI Technical Summary

Problems solved by technology

However, there are unavoidable micro-gaps in the contact interface of "abutment-implant", and the corrosive media (saliva, microorganisms, etc.) in the oral cavity can easily penetrate into this extremely small gap; Can be contaminated by saliva, blood, intraoperative fluids, etc., making it highly susceptible to corrosion

Also reduces the service life of the abutment

Images