Lemos Bernardo Ferreira, Lopez-Jarana Paula, Falcao Carlos, Ríos-Carrasco Blanca, Gil Javier, Ríos-Santos José Vicente, Herrero-Climent Mariano
Faculty of Health Sciences, Fernando Pessoa University, 4249-004 Porto, Portugal.
Porto Dental Institute, 4150-518 Porto, Portugal.
Int J Environ Res Public Health. 2020 Dec 2;17(23):8965. doi: 10.3390/ijerph17238965.
As immediate loading protocols are becoming more frequent, the primary stability of implants has become an essential criterion for the osseointegration of dental implants. Based on this, the objective of this study was to understand the influence of different undersized surgical preparation sites on the insertion torque (IT) and implant stability quotient (ISQ). Four different site-preparation protocols were performed on fresh humid type III bovine bone: one control, the standard protocol recommended by the manufacturer (P1), and three variations of undersized techniques (P2, P3 and P4). The implant used was VEGA by Klockner Implant System. The sample size was n = 40 for each of the four groups. A torquemeter was used to measure the IT, and the ISQ was measured with a Penguin RFA. Both variables showed a tendency to increase as the preparation technique was reduced, although not all the values were statistically significant ( < 0.05) when comparing with the standard preparation. The preparations without a cortical drill, P2 and P4, showed better results than those with a cortical drill. Given the limitations of this study, it can be concluded that reducing the implant preparation can increase both the IT and ISQ. Removing the cortical drill is an effective method for increasing implant stability, although it should be used carefully.
随着即刻种植方案越来越频繁，种植体的初期稳定性已成为牙种植体骨结合的一项重要标准。基于此，本研究的目的是了解不同尺寸过小的手术预备部位对植入扭矩（IT）和种植体稳定性商数（ISQ）的影响。在新鲜湿润的III型牛骨上进行了四种不同的部位预备方案：一种对照方案，即制造商推荐的标准方案（P1），以及三种尺寸过小技术的变体方案（P2、P3和P4）。所使用的种植体是Klockner种植系统的VEGA。四组中每组的样本量均为n = 40。使用扭矩计测量IT，并用企鹅RFA测量ISQ。随着预备技术尺寸的减小，两个变量均呈现增加趋势，不过与标准预备相比，并非所有值都具有统计学显著性（< 0.05）。未使用皮质骨钻的预备方案P2和P4，比使用皮质骨钻的方案效果更好。鉴于本研究的局限性，可以得出结论，减小种植体预备尺寸可提高IT和ISQ。去除皮质骨钻是提高种植体稳定性的有效方法，不过应谨慎使用。
