Find High-Quality Planting Materials for Your Garden | Shop Now

bioceramics

Bioceramics used in oral implants are mainly divided into bioactive ceramics

and bioinert ceramics. Bioactive ceramics include hydroxyapatite ceramics, bioactive glass ceramics and calcium phosphate glass ceramics.

This material has good biocompatibility and is very similar to the inorganic components in human bone tissue. When it is implanted into living bone tissue, it can organically combine with bone tissue and participate in bone tissue metabolism to promote bone tissue growth. Bioinert ceramics mainly refers to single crystal alumina, etc. This type of material has high strength and good stability. There are basically no significant chemical changes in the body, and it can form a stable interface with the implanted tissue.

Metal

At present, the raw materials of several widely used dental implant systems are basically pure titanium or titanium alloys. Titanium easily forms an oxide film TiO2 on the surface, which is an inert interface state. The presence of this oxide layer acts as a transition layer between organic tissue and inorganic implants.

Tengvell et al. believe that Ding Tio2 can partially form the TiooH matrix, which inhibits the production of superoxide products in inflammation and thereby prevents the release of hydroxide ions, allowing titanium implants to remain stable in the implanted tissue. Compatibility relationship.

Titanium metal has high mechanical strength and its elastic modulus is far lower than that of natural bone tissue. Therefore, appropriate consideration should be given to the design of artificial implant teeth to reduce stress concentration at the interface. Cobalt-chromium alloy is commonly used for artificial hip joints because of its ease of processing and good corrosion resistance.

carbon material

Carbon materials have good biocompatibility and mechanical properties, and their elastic modulus is similar to bone tissue. However, its use is limited due to the color of the material.

polymer material

It mainly includes acrylate, polytetrafluoroethylene, polysulfone, etc. Polymer materials are extremely unstable in the human microenvironment. Many components decompose and degrade, affecting the response of local tissue cells and even systemic responses. In the experiment, it was observed that local tissue sections showed the presence of a large number of inflammatory cells such as macrophages wrapped in a thick fibrous membrane.