Dental implant

Abstract

The invention relates to a dental implant, comprising an implant body and an abutment connected with the implant body. The peripheral surface of the neck, in contact with soft tissue, of the implant body and abutment is provided with a porous outer layer region; a plurality of spherical cavities are arranged in the porous outer layer region; the mutually contacted ones of the spherical cavities are communicated with each other; all the spherical cavities in contact with the peripheral surface of the neck are opened from the peripheral surface of the neck; the porous outer layer region is provided with a plurality of axial ducts having the bottoms communicated with the spherical cavities in the porous outer layer region and having the tops opened from the surface of the abutment. The structure of the porous outer layer region and pharmaceutical and / or bioactive molecular combination is used herein to generate multiple good effects to promote the occlusion of the soft tissue contact region of the neck of the implant; aesthetic defects caused by movement of the neck of the implant body to the root and peri-implant bone absorption and implant life shortening caused by low binding strength can be avoided; therefore, implanting success rate and aesthetic effect are further increased.

Description

technical field [0001] The invention belongs to a dental restoration in the field of oral cavity, in particular to a dental implant. Background technique [0002] Implant dentures, as the main treatment for edentulousness and dentition defects, are gaining more and more attention. There are many studies on the osseointegration between implants and bone tissue, and they are relatively mature. However, the combination of implant denture neck and soft tissue is relatively weak, and it is difficult to form a stable soft tissue barrier in the neck. There are relatively few related studies in this area. few. Poor bonding of the implant neck to the soft tissue provides an avenue for the development of infections including peri-implant mucositis and peri-implantitis. Among them, the incidence of peri-implant mucositis is as high as 43%; and untreated peri-implant mucositis can progress to peri-implantitis (incidence rate 22%). Infections at the soft tissue interface around implan...

AI Technical Summary

Problems solved by technology

[0006] Although simply forming a porous structure in the neck region of the implant can promote the growth and combination of cells and enhance the sealing of soft tissues to a certain extent, because the bottom of the depressed hole is in a closed shape, it cannot extend further radially to the inside, let alone Form the structure of communication between holes, thus limiting the further improvement of the binding strength of fibroblasts; at the same time, the space between holes is a relatively weak area for soft tissue bonding on the surface of the implant, and cannot form a firm bond , easily lead to bacterial invasion and attack the root side

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