Takeshita F, Iyama S, Ayukawa Y, Suetsugu T, Oishi M
Faculty of Dentistry, Kyushu University, Japan.
J Periodontol. 1997 Mar;68(3):293-8. doi: 10.1902/jop.1997.68.3.293.
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.
本研究的目的是评估三个失败的中空种植体的放射学、组织学和组织计量学结果。在根尖片上，这些种植体显示出垂直骨吸收直至种植体周围的中空部分。组织学切片检查发现，所有种植体的中空部分几乎都充满了骨组织，尽管在中空部分的冠方观察到轻微的骨吸收以及有炎性细胞浸润的肉芽组织存在。组织计量学分析显示，病例1的平均骨接触百分比为93.1%，病例2为90.9%，病例3为84.3%，平均骨填充百分比分别为42.1%、50.5%和33.8%。因此，这些种植体似乎有成功治疗的潜力，因为破坏性变化仅限于种植体的冠方。
