Experimental alveolar ridge augmentation by distraction osteogenesis using a simple device that permits secondary implant placement.
Experimental alveolar ridge augmentation by distraction osteogenesis using a simple device that permits secondary implant placement.
复制标题
使用允许二次植入的简单装置通过牵引成骨进行实验性牙槽嵴增强。
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
M. Ueda
中科院分区：
文献类型：
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作者：
T. Oda;Y. Sawaki;M. Ueda
本研究的目的是开发一种通过使用牵引螺钉牵引成骨来增强牙槽嵴的技术，并研究牵引部位对钛种植体的组织反应。从6只成年犬身上拔除左下颌前磨牙。 12周后，进行了牙槽骨的盒形截骨术，并在运输段和基底部放置了牵引装置。经过 7 天的潜伏期后，牙槽骨以 1.0 毫米/天的速度垂直增大 7 毫米。牵引后不久，这些装置就被牙种植体取代，用于固定运输段和牵引部位的骨形成。在牵引后第 8 周和第 12 周进行组织学和放射学评估。巩固 12 周后，垂直增强平均为 6.1 毫米。可以毫不费力地延长牙槽骨，并且在牵引部位发现良好的骨形成。与 8 周相比，在牵引后 12 周观察到种植体与牵引骨之间的融合程度更高。通过这种改进的技术，牵引成骨成功地应用于牙槽嵴增高，并且种植体在增高的牙槽嵴中骨整合。
The purpose of this study was to develop an improved technique of alveolar ridge augmentation by distraction osteogenesis using distraction screws, and to investigate tissue reactions to titanium implants at the distraction site. The left mandibular premolars were extracted from 6 adult dogs. After 12 weeks, a box-shaped osteotomy of the alveolar bone was carried out, and distraction devices were placed on the transport and base segments. After a 7-day latency period, the alveolar bone was augmented by 7 mm vertically at a rate of 1.0 mm/day. Just after distraction, these devices were replaced with dental implants for fixation of the transport segment and bone formation of the distraction site. Histologic and radiographic evaluations were made at 8 and 12 weeks after distraction. Vertical augmentation averaged 6.1 mm after 12 weeks of consolidation. It was possible to lengthen the alveolar bone without great difficulty, and good bone formation was recognized in the distraction site. Greater integration between the implant and the distracted bone was observed at 12 weeks after distraction than at 8 weeks. Distraction osteogenesis was successfully applied to alveolar ridge augmentation by this improved technique, and the implants osseointegrated in the augmented ridge.