Takeshita F, Ayukawa Y, Suetsugu T, Higuchi Y, Oishi M, Yamane S, Minamimoto M
Faculty of Dentistry, Kyushu University, Fukuoka, Japan.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 1996 Oct;82(4):379-85. doi: 10.1016/s1079-2104(96)80301-5.
The purpose of this study was to radiologically, histologically, and histometrically evaluate bone in the hollow portion of three implants retrieved for psychological reasons.
Three hollow implants retrieved from two patients were studied. We investigated the radiologic and histologic changes of these implants with the use of radiographs, light microscopy, image processing, and fluorescent microscopy.
There were no radiologic and histologic degeneration around the implants. Histometric analysis of the hollow indicated that the average percentage of bone contact rate was 33.5% in case 1, 74.5% in case 2, and 18.4% in case 3; the average percentage of bone filling was 25.1%, 33.9%, and 6.6%, respectively. There was a great variation among the three cases in bone to implant contact and bone filling.
The hollow portion in case 1 that penetrated into the maxillary sinus was encapsulated with fibrous tissue. The amount of bone tissue in the hollow portion seems to depend on the initial bone quality of the recipient sites.
本研究旨在通过影像学、组织学和组织计量学方法，对因心理原因取出的3枚种植体中空部分的骨组织进行评估。
对从2例患者体内取出的3枚中空种植体进行研究。我们通过X线片、光学显微镜、图像处理和荧光显微镜，研究了这些种植体的影像学和组织学变化。
种植体周围未见影像学和组织学退变。对中空部分的组织计量学分析表明，病例1的骨接触率平均百分比为33.5%，病例2为74.5%，病例3为18.4%；骨填充的平均百分比分别为25.1%、33.9%和6.6%。3例在骨与种植体的接触及骨填充方面存在很大差异。
病例1中穿透至上颌窦的中空部分被纤维组织包裹。中空部分的骨组织量似乎取决于受体部位的初始骨质量。
