Teh Effect of Hydroxyapatite Coating on the Mechanical Strengths and Histologic Profiles of Porous Titanium Implants in Dogs
10.4055/jkoa.1994.29.7.1721
- Author:
Chang Dong HAN
;
Nam Hyun KIM
;
Eung Shick KANG
;
Ick Hwan YANG
;
Dong Eun SHIN
- Publication Type:Original Article
- Keywords:
Hydroxyapatite-coated implant;
Porous coated implant;
Bone ingrowth;
Osseointegration
- MeSH:
Animals;
Dogs;
Durapatite;
Osseointegration;
Plasma;
Shear Strength;
Titanium
- From:The Journal of the Korean Orthopaedic Association
1994;29(7):1721-1729
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The purpose of this study is to investigate the effect of plasma sprayed hydroxyapatite(HA) coating on bone ingrowth into fiber-mesh coated titanium implant. The shear strength of the HA coatings on interface attachment, the degree of osseointegration of HA coated implants and bone ingrowth of fiber-mesh coated titanium implants were evaluated. The implants were placed transcortically in the femora of mature dogs and evaluated after six weeks. The pushout test showed 33.58±10.87 MPa in HA-coated fiber meshed implants and 20.53±4.91 MPa in fiber-mesh coated implants. In histologic observations, similar quantitative results in the amount of bone ingrowth and osseointegration on both systems. The HA coatings showed direct osseointegration and bone ingrowth on its surface and fiber-mesh without fibrous layer, but the fiber-mesh only coatings showed thin fibrous layer between the ingrown bone and titanium surface. In conclusion, HA-coating on fiber-mesh coated implant provided earlier and stronger osseointegration and bone ingrowth than fiber-mesh only coated implant.
