Failing hollow implants examined by light microscopy and image processing.
The purpose of this study was to evaluate the radiologic, histologic, and histometric findings of three failing hollow implants. On periapical radiographs, these implants showed vertical bone loss up to the hollow portion around the implant. Examination of the histologic sections disclosed that the hollow portions of all the implants were almost filled with bone tissue, although slight bone resorption and presence of granulation tissue infiltrated with inflammatory cells was observed coronal to the hollow portion. Histometric analysis disclosed that the average percent bone contact was 93.1% in case 1, 90.9% in case 2, and 84.3% in case 3 and the average percent bone filling was 42.1%, 50.5%, and 33.8%, respectively. Consequently, there seems to be some potential for successful treatment of these implants because the destructive changes were limited to the coronal aspects of the implant.
Takeshita
F
F
Faculty of Dentistry, Kyushu University, Japan.
Iyama
S
S
Ayukawa
Y
Y
Suetsugu
T
T
Oishi
M
M
D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging / Q000473:pathology; D000539:Alveolar Process / Q000000981:diagnostic imaging / Q000473:pathology; D001853:Bone Marrow / Q000000981:diagnostic imaging / Q000473:pathology; D001862:Bone Resorption / Q000000981:diagnostic imaging / Q000473:pathology; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D017267:Dental Prosthesis Design; D019232:Dental Restoration Failure; D005260:Female; D006097:Granulation Tissue / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008875:Middle Aged; D016348:Osseointegration; D010010:Osteoclasts / Q000473:pathology; D010486:Periapical Tissue / Q000000981:diagnostic imaging / Q000473:pathology; D011859:Radiography; D013499:Surface Properties
D015921:Dental Implants