Soheilifar Sara, Bidgoli Mohsen, Houshyar Ehsan, Farhadian Maryam, Ghamari Ali
Faculty of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran.
Department of Oral Health and Community, Faculty of Dentistry, Urmia University of Medical Sciences, Urmia, Iran.
J Long Term Eff Med Implants. 2018;28(1):1-8. doi: 10.1615/JLongTermEffMedImplants.2018020398.
The objective of this study was to compare the effects of preparing for implant site osteotomy with conventional drilling or piezosurgery on the stability of oral implants after a 5 month follow-up period. Thirty patients participated in this randomized clinical trial and received two implants in posterior mandible in bone of the same quality. All surgical procedures were performed by the same surgeon. Implant stability amounts were measured by resonance frequency analysis using the Osstell Mentor device and are reported in the format of implant stability quotient (ISQ) values at baseline and 90 and 150 days after surgery. All implants were well osseointegrated. Differences in ISQ levels were statistically significant in the piezosurgery group at all time intervals, whereas those in the conventional drill group were not significant as analyzed by analysis of variance. The significance of differences between the two groups in each time interval was assessed with Student's t test. In the second interval (90 days), there were statistically significant differences in ISQ levels between the two groups at the buccal, lingual side of implants and mean of two measurements, but at baseline and 150 days, there were no significant differences between these techniques. The early increase of ISQ values in piezoelectric sites shows that piezosurgery is a less traumatic bone osteotomy method with a shorter inflammatory phase and little resorption compared with sites prepared by conventional drilling. ISQ values of up to 60-65 at the time of insertion of the implant predict a good prognosis for immediate implant loading. In this study, the ISQ values were almost always higher than this, offering the safe condition for immediate or early loading protocols after the piezoelectric method of implant site osteotomy. These results may increase predictability of immediate-loading procedure in oral implantology.
本研究的目的是比较采用传统钻孔或压电手术准备种植位点截骨术对口腔种植体在5个月随访期后的稳定性的影响。30名患者参与了这项随机临床试验，在下颌后部骨质相同的部位植入了两颗种植体。所有手术均由同一位外科医生进行。使用Osstell Mentor设备通过共振频率分析测量种植体稳定性数值，并以种植体稳定性商数（ISQ）值的形式报告基线以及术后90天和150天的数据。所有种植体均实现了良好的骨整合。压电手术组在所有时间间隔的ISQ水平差异均具有统计学意义，而传统钻孔组经方差分析差异不显著。采用学生t检验评估两组在每个时间间隔的差异显著性。在第二个时间间隔（90天），两组在种植体颊侧、舌侧以及两次测量平均值的ISQ水平存在统计学显著差异，但在基线和150天时，这些技术之间无显著差异。压电手术位点ISQ值的早期升高表明与传统钻孔制备的位点相比，压电手术是一种创伤较小的骨截骨方法。炎症期较短且吸收较少。种植体植入时ISQ值高达60 - 65预示着即刻种植体加载有良好的预后。在本研究中，ISQ值几乎总是高于此值，为采用压电方法进行种植位点截骨术后的即刻或早期加载方案提供了安全条件。这些结果可能会提高口腔种植学中即刻加载程序的可预测性。
