TY - JOUR
T1 - Comparative study of hydroxyapatite and titanium dental implants in dogs
AU - Kohri, Masaki
AU - Cooper, Edward P.
AU - Ferracane, Jack L.
AU - Waite, Daniel F.
N1 - Funding Information:
* Assistant Professor, Department of Removable Prosthetic Dentistry. School of Dentistry, Hokkaido University, Sapporo, Japan; Research Scholar, Department of Oral and Maxillofacial Surgery, Baylor College of Dentistry, Dallas. t Research Fellow, Department of Oral and Maxillofacial Surgery. University of Tennessee Medical Center at Knoxville, TN. $ Associate Professor and Chairman, Department of Dental Materials Science, The Oregon Health Sciences Universitv. Portland. 8 Emeritus Professor and Chairman, Department of Oral and Maxillofacial Surgery, Baylor College of Dentistry, Dallas. Presented in vat? at the 67th General Session of the Intema-tional Association for Dental Research, Dublin, Ireland, June 1989. Supported by grants from Baylor College of Dentistry. Collagen Corporation. and Asahi Optical Company. Address correspondence and reprint requests to Dr Waite: Department of Oral and Maxillofacial Surgery, Baylor College of Dentistry. 3302 Gaston Ave, Dallas. TX 75246.
PY - 1990/12
Y1 - 1990/12
N2 - This study compares the clinical performance and histologic response in dogs to a cylindrical implant with a surface consisting of dense hydroxyapatite (HA) and a threaded titanium implant in functionally loaded and unloaded conditions. Implantation was performed in five dogs, which were killed at 2 or 4 months postfunctional condition (4 or 6 months after implantation). Clinical evaluation showed that neither implant demonstrated significant movement, and assessment of gingival inflammation and sulcus depth showed no significant differences between them. After axial sectioning, the titanium implants were easily removed from the bone, whereas the HA-coated implants were adherent to the bone. Histologically, both implants showed osteogenic ingrowth to the surface in functional and nonfunctional conditions. High-magnification scanning electron micrographs of plastic sections showed that a portion of the interface between the HA-coated implant and the bone showed no gap, whereas gaps were observed at all interfaces with the titanium implant. Histomorphometric analysis by light microscopy indicated that there was no significant difference in the percent bone contact length. Clinically, the two implants behaved similarly.
AB - This study compares the clinical performance and histologic response in dogs to a cylindrical implant with a surface consisting of dense hydroxyapatite (HA) and a threaded titanium implant in functionally loaded and unloaded conditions. Implantation was performed in five dogs, which were killed at 2 or 4 months postfunctional condition (4 or 6 months after implantation). Clinical evaluation showed that neither implant demonstrated significant movement, and assessment of gingival inflammation and sulcus depth showed no significant differences between them. After axial sectioning, the titanium implants were easily removed from the bone, whereas the HA-coated implants were adherent to the bone. Histologically, both implants showed osteogenic ingrowth to the surface in functional and nonfunctional conditions. High-magnification scanning electron micrographs of plastic sections showed that a portion of the interface between the HA-coated implant and the bone showed no gap, whereas gaps were observed at all interfaces with the titanium implant. Histomorphometric analysis by light microscopy indicated that there was no significant difference in the percent bone contact length. Clinically, the two implants behaved similarly.
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U2 - 10.1016/0278-2391(90)90480-P
DO - 10.1016/0278-2391(90)90480-P
M3 - Article
C2 - 2172495
AN - SCOPUS:0025221129
SN - 0278-2391
VL - 48
SP - 1265
EP - 1273
JO - Journal of Oral and Maxillofacial Surgery
JF - Journal of Oral and Maxillofacial Surgery
IS - 12
ER -