摘要
将羟基磷灰石（ＨＡ）涂层钛种植体延期植入狗颌骨，施以１５０ｇ的正畸力，通过口内及Ｘ线照片测量，动态研究种植支抗在３个月内的稳定性。结果显示：判断种植支抗的移动应综合采用口内及通过Ｘ线照片测量两种方法；ＨＡ涂层钛种植支抗的骨内段无移位（Ｐ＞０．０５），而基桩在受力后第２和第３个月倾斜移动。说明该类骨内种植体的体部承受正畸力时具有良好的稳定性，在将其颈部设计调整后作为种植支抗，可保证在短期正畸治疗时间内不移动。
12 twostage HAcoated titanium implants were inserted into the mandibular alveolar bones of two dogs were loaded with orthodontic force of 150 gram for 3 months. The stability of the implants under orthodontic force were studied with intraoral and radiographic examinations. The results showed that both intraoral and radiographic analysis were reliable for assessing implant stability,and no signs of fixture dislocation were found during the force application period (P>0.05), while the abutment was tilted after being loaded for 2 to 3 months. This suggests that HAcoated titanium implants remain stable enough under orthodontic force and are suitable as anchorage for shortterm orthodontic therapy after design of the implant neck is improved.
出处
《华西口腔医学杂志》
CAS
CSCD
北大核心
1998年第2期153-155,共3页
West China Journal of Stomatology
基金
国家教委留学回国人员科研启动基金
关键词
正畸
支抗
稳定性
钛种植体
羟基磷灰石涂层
\ HAcoated titanium implant\ \ orthodontic anchorage\ \ stability
