Pérez-Pevida Esteban, Brizuela-Velasco Aritza, Chávarri-Prado David, Diéguez-Pereira Markel, Jiménez-Garrudo Antonio, Montalbán-Vadillo Oier, Viteri-Agustín Iratxe, Estrada-Martínez Alejandro, Santamaría-Arrieta Gorka
Department of Surgery, Faculty of Medicine, University of Salamanca, Salamanca, Spain.
Department of Surgery and Medical-Surgical Specialities, University of Oviedo, Oviedo, Spain.
J Dent Sci. 2019 Dec;14(4):358-364. doi: 10.1016/j.jds.2019.04.004. Epub 2019 May 21.
BACKGROUND/PURPOSE: The use of osteotomes as a technique for densification and expansion of the residual ridge is one of the most widely used procedures to achieve adequate peri-implant bone quantity and density. The aim of this study was to evaluate the influence of time and the elastic deformation of peri-implant bone in the primary stability of implants placed using osteotomes.
In each of 10 fresh fragments of cow rib, two implants were placed using osteotomes. The insertion torque and initial implant stability quotient (ISQ) values were measured. In the control implants, the immediate removal torque was measured, while in the test implants, after 15 min of placement, ISQ values were measured again, and the removal torque was measured.
There were significant differences between the ISQ values and between the insertion torque and removal torque at 15 min. The ISQ values (perpendicular/parallel) increased between the initial moment (64.4 ± 9/70.3 ± 5.9) and 15 min (66/71.4 ± 6.4). The removal torque at 15 min (12.4 ± 5.8) was lower than the insertion torque (15.9 ± 5.9). Compression of the trabeculae in contact with the implant placed using osteotomes was observed, as well as a greater number of trabecular fractures in the implants placed using conventional drilling.
There is an increase in ISQ values of dental implants placed using osteotomes after 15 min of placement.
背景/目的：使用骨凿对剩余牙槽嵴进行致密化和扩张的技术是实现足够种植体周围骨量和骨密度最广泛应用的手术之一。本研究的目的是评估时间和种植体周围骨的弹性变形对使用骨凿植入种植体的初期稳定性的影响。
在10个新鲜牛肋骨片段中，每个片段使用骨凿植入两枚种植体。测量植入扭矩和初始种植体稳定性商（ISQ）值。对于对照种植体，测量即刻取出扭矩，而对于试验种植体，在植入15分钟后再次测量ISQ值，并测量取出扭矩。
15分钟时，ISQ值之间以及植入扭矩和取出扭矩之间存在显著差异。ISQ值（垂直/平行）在初始时刻（64.4±9/70.3±5.9）和15分钟时（66/71.4±6.4）有所增加。15分钟时的取出扭矩（12.4±5.8）低于植入扭矩（15.9±5.9）。观察到与使用骨凿植入的种植体接触的小梁受压，以及使用传统钻孔植入的种植体中有更多的小梁骨折。
使用骨凿植入的牙种植体在植入15分钟后ISQ值增加。
