A histologic evaluation of retrieved hydroxyapatite-coated blade-form implants using scanning electron, light, and confocal laser scanning microscopies.
We histologically examined seven hydroxyapatite-coated (HA) blade implants removed from patients. Four of them radiologically showed severe bone loss and were easily removed with an elevator. Three radiologically showed vertical bone loss and were removed by surgical procedure. Our histological evaluation indicated that coating separation from the HA implants had occurred, and HA coating resorption by bone tissues was suspected in an implant left in situ for 8 years. Several multinucleated giant cells were seen with a few released particles of HA coating at the point lacking bone contact with the HA coating. The presence of microorganisms on and in the HA coating layer was also noted.
Takeshita
F
F
Prosthetic Dentistry II, Faculty of Dentistry, Kyushu University, Fukuoka, Japan.
Ayukawa
Y
Y
Iyama
S
S
Suetsugu
T
T
Kido
M A
MA
D000328:Adult; D001419:Bacteria / Q000648:ultrastructure; D001672:Biocompatible Materials / Q000737:chemistry; D001751:Blade Implantation; D001862:Bone Resorption / Q000000981:diagnostic imaging; D015921:Dental Implants; D017886:Durapatite / Q000737:chemistry; D005069:Evaluation Studies as Topic; D005260:Female; D015726:Giant Cells / Q000473:pathology / Q000648:ultrastructure; D006097:Granulation Tissue / Q000473:pathology; D006801:Humans; D008297:Male; D008336:Mandibular Diseases / Q000000981:diagnostic imaging; D018613:Microscopy, Confocal; D008855:Microscopy, Electron, Scanning; D008875:Middle Aged; D016348:Osseointegration; D011859:Radiography; D013499:Surface Properties
D001672:Biocompatible Materials; D015921:Dental Implants; D017886:Durapatite