Surface characteristics of a novel hydroxyapatite-coated dental implant
Journal of Periodontal & Implant Science
; : 59-63, 2012.
Article
em En
| WPRIM
| ID: wpr-135237
Biblioteca responsável:
WPRO
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.
Palavras-chave
Texto completo:
1
Base de dados:
WPRIM
Assunto principal:
Titânio
/
Difração de Raios X
/
Dente Pré-Molar
/
Implantes Dentários
/
Molhabilidade
/
Durapatita
/
Materiais Revestidos Biocompatíveis
/
Cristalinas
/
Hidroxiapatitas
/
Mandíbula
Limite:
Animals
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article