摘要
目的通过RFA仪器监测,了解Straumann种植体在植入颌骨后骨愈合期间早期负荷与延迟负荷其稳定性的变化并分析其规律。方法选择25例牙列缺损患者,共植入Straumann种植体52枚。患者随机分为实验组和对照组,实验组在术后第6周进行早期负荷,对照组在术后第12周进行延迟负荷。用RFA仪器分别测量各种植体在种植术当日、术后1周、4周、6周、8周、12周时代表稳定性的ISQ值。将两组ISQ值根据不同时间段进行比较分析并进行统计学检验。结果所有种植体在植入时都取得了良好的初期稳定性,ISQ平均值为64.39±0.66。各组种植体稳定性在术后第4周下降至最低,而从第4周到第6周出现明显上升。统计学分析表明实验组和对照组的种植体的ISQ值在不同时间段间无统计学差异(P>0.05)。结论早期负荷的种植体在不同骨愈合时期能取得良好的稳定性。在合理的计划和选择病人后,实施早期负荷不失为一个好的治疗手段。
Objective To compare the implants′ stability under early loading（6 weeks＇ healing） with that under delayed loading（12 weeks＇ healing） to provide objective data for choosing the timing of implant restoration in clinics using resonance frequency analysis（RFA）.Methods 52 Straumann implants were placed into 25 partially or totally edentulous patients.The patients were divided into 2 groups randomly.The test group was loaded at the 6th week after surgery.The control group was loaded at 12th week after surgery.ISQ was tested by RFA on the day of surgery and consecutively at the 1st,2nd,4th,6th,8th,10th and 12th week.Results All the 52 implants achieved good primary stability in surgery.The mean ISQ value was 64.39±0.66 on the day of surgery and dropped to the lowest point at the 4th week after surgery,then got notable increase between 4th and 6th weeks after surgery in the stability curve.There was no statistics difference of mean ISQ value and its changing pattern between different loading time.Conclusions The present study indicated that the healing with early loading of Straumann implant at the 6th week could be predictable.The early loading could be applied in properly planned and well-selected cases.
出处
《口腔医学》
CAS
2011年第8期476-479,共4页
Stomatology
关键词
种植体
早期负荷
延迟负荷
implant
early loading
delayed loading
