Development of a New Diagnostic System of Bone Quality for Endosseous Implant

为了开发一种新的骨内种植体诊断系统，在可重复注册的情况下，对全景x线摄影和计算机断层扫描进行了评估。在特殊夹具的帮助下，全景x线摄影和计算机断层摄影具有很高的重复性。这一结果增强了通过ct图像和全景x线片来阐明骨质量相关性的可能性。植体患者在植体窝骨准备期间进行骨活检。对骨标本进行组织学和组织学评价。这些结果与术中对骨质量的临床印象及CT的价值密切相关。通过咀嚼时下颌运动和肌肉活动的变化来评估种植患者的口颌功能。上层建筑设置后，功能得到明显改善。这些结果表明，可重复的全景x线图像与计算机断层图像的信息相关联，可以明显地促进一种新的诊断系统的发展，从而更好地解释骨质量。

To develope a new diagnostic system of the bone for the endosseous dental implant, panoramic radiograghy and computed tomography were evaluated at repeatable registrations. With the aid of the special jigs, panoramic radiogram and computed tomogram were shown to be highly repeatable. This result enhances a possibility to clarify the correlation between bone quality by CT-image and panoramic radiogram. Bone biopsy was performed in the implant patients during the bone preparation for the implant socket. Histological and histometrical evaluations were done from the specimen of the bone. These findings well related to the clinical impression of the bone quality during operation and the value of CT. Stomatognathic function of the implant patients was also evaluated by the change of the mandibular movement and muscle activity during chewing. After superstructure setting, The function was obviously improved. These results suggest that repeatable panoramic radiogram correlated with the informations of computed tomogram could obviously contribute the development of a new diagnostic system which explains the bone quality well.