Experimental Study on Osseointegration of Micro-arc Oxidized Hydroxyapatite Coated Titanium Implants

doi:10.13701/j.cnki.kqyxyj.2019.11.015

Abstract

Abstract: Objective: To explore the osseointegration of micro-arc oxidized hydroxyapatite (HA) titanium implants in vivo. Methods: Two HA coated titanium implants were prepared by electrochemistry (ELC) and micro-arc oxidation (MAO) method. The implant surface morphology was observed by scanning electron microscope. The beagle dog was treated with implants 2 months after the extraction of the posterior mandibular teeth. Bone tissue sections were stained 2 months after implantation to observe the degree of osseointegration. X-ray was used to observe the amount of bone around the implants in both groups. The torsion test was used to detect the torsion required to twist out the implants, so as to judge the degree of osseointegration of implants in two groups. Results: Scanning electron microscope showed that the surface of implants in MAO group was rougher than that in ELC group. Tissue sections showed that the implants in MAO group were more tightly bound to the surrounding bone. X-ray results showed that the MAO group had abundant bone mass around the implants, while the ELC group had less bone mass around the implants. The torsion test showed that compared with the ELC group, the MAO group required more torsion force to twist out the implant, and the differences between the two groups was statistically significant (P=0.0006). Conclusion: Micro-arc oxidized hydroxyapatite coated titanium implants can be used in clinical implant therapy as a novel material with good properties

Key words: implants, micro-arc oxidation, osseointegration, titanium

WANG Yanling, DING Hong, HE Wei, ZHU Lansheng, LIU Aiqun, XU Xiaoting. Experimental Study on Osseointegration of Micro-arc Oxidized Hydroxyapatite Coated Titanium Implants[J]. Journal of Oral Science Research, 2019, 35(11): 1070-1073.

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