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Surface characteristics of a novel hydroxyapatite-coated dental implant

Authors
 Ui-Won Jung ; Ji-Wan Hwang ; Hee-Jin Kim ; Seong-Ho Choi ; Mi-Kyung Kwon ; Kyung-Seok Hu ; Da-Yae Choi 
Citation
 Journal of Periodontal & Implant Science (JPIS), Vol.42(2) : 59~63, 2012 
Journal Title
 Journal of Periodontal & Implant Science (JPIS) 
ISSN
 2093-2278 
Issue Date
2012
Abstract
PURPOSE: This study evaluated the surface characteristics and bond strength produced using a novel technique for coating hydroxyapatite (HA) onto titanium implants. METHODS: HA was coated on the titanium implant surface using a super-high-speed (SHS) blasting method with highly purified HA. The coating was performed at a low temperature, unlike conventional HA coating methods. Coating thickness was measured. The novel HA-coated disc was fabricated. X-ray diffraction analysis was performed directly on the disc to evaluate crystallinity. Four novel HA-coated discs and four resorbable blast medium (RBM) discs were prepared. Their surface roughnesses and areas were measured. Five puretitanium, RBM-treated, and novel HA-coated discs were prepared. Contact angle was measured. Two-way analysis of variance and the post-hoc Scheffe's test were used to analyze differences between the groups, with those with a probability of P<0.05 considered to be statistically significant. To evaluate exfoliation of the coating layer, 7 sites on the mandibles from 7 mongrel dogs were used. Other sites were used for another research project. In total, seven novel HA-coated implants were placed 2 months after extraction of premolars according to the manufacturer's instructions. The dogs were sacrificed 8 weeks after implant surgery. Implants were removed using a ratchet driver. The surface of the retrieved implants was evaluated microscopically. RESULTS: A uniform HA coating layer was formed on the titanium implants with no deformation of the RBM titanium surface microtexture when an SHS blasting method was used. CONCLUSIONS: These HA-coated implants exhibited increased roughness, crystallinity, and wettability when compared with RBM implants.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/91043
DOI
10.5051/jpis.2012.42.2.59
Appears in Collections:
1. 연구논문 > 2. College of Dentistry > Dept. of Periodontology
1. 연구논문 > 2. College of Dentistry > Dept. of Oral Biology
Yonsei Authors
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