Kobatake Reiko, Doi Kazuya, Izumikawa Tomoko, Morimoto Yusuke, Wakamatsu Kaien, Tsuga Kazuhiro
Department of Advanced Prosthodontics, Hiroshima University Graduate School of Biomedical and Health Sciences, HiroshimaJapan.
J Oral Maxillofac Res. 2025 Jun 30;16(2):e4. doi: 10.5037/jomr.2025.16206. eCollection 2025 Apr-Jun.
This preliminary study aimed to clarify the usefulness of the accumulated torque value as a new method for evaluating primary implant stability.
Implants of different sizes (42-10ST and 37-6ST) and simulated bone blocks of different densities (D1 to D4) were used. The implant osteotomy was prepared following the manufacturer's drilling protocol in simulated bone blocks, and the implants were inserted (n = 10). The implant insertion torque value was measured at 0.05 seconds intervals. The peak value was recorded as the peak torque value (PTV), and the sum of the torque values measured from the start to the end of the implant insertion was recorded as the accumulated torque value (ATV). After implantation, the implant stability quotient (ISQ) was measured. Correlations among ATV, PTV, and ISQ were analysed.
The ATV increased with the density of the simulated bone block. A strong correlation was observed between the PTV value and ATV value (42-10ST [P < 0.05, r = 0.99], 37-6ST [P < 0.05, r = 0.99]). In addition, a correlation was observed between the ATV and ISQ ISQ (42-10ST [P < 0.05, r = 0.81], 37-6ST [P < 0.05, r = 0.83]). The PTV was higher in the 42-10ST group than in the 37-6ST group from D1 to D4.
The accumulated torque value varied according to the density of the simulated bone block, and a correlation was observed with the existing implant stability evaluation method. This suggests that this method may be useful as a novel approach for evaluating primary implant stability.
本初步研究旨在阐明累积扭矩值作为评估种植体初期稳定性新方法的实用性。
使用不同尺寸（42 - 10ST和37 - 6ST）的种植体以及不同密度（D1至D4）的模拟骨块。按照制造商的钻孔方案在模拟骨块中制备种植体截骨术，然后植入种植体（n = 10）。每隔0.05秒测量一次种植体植入扭矩值。将峰值记录为峰值扭矩值（PTV），并将从种植体植入开始到结束测量的扭矩值总和记录为累积扭矩值（ATV）。植入后，测量种植体稳定性商数（ISQ）。分析ATV、PTV和ISQ之间的相关性。
ATV随模拟骨块密度的增加而增加。观察到PTV值与ATV值之间存在强相关性（42 - 10ST [P < 0. / 05，r = 0.99]，37 - 6ST [P < 0.05，r = 0.99]）。此外，观察到ATV与ISQ之间存在相关性（42 - 10ST [P < 0.05，r = 0.81]，37 - 6ST [P < 0.05，r = 0.83]）。从D1到D4，42 - 10ST组的PTV高于37 - 6ST组。
累积扭矩值随模拟骨块密度而变化，并且与现有的种植体稳定性评估方法存在相关性。这表明该方法可能作为评估种植体初期稳定性的一种新方法有用。
