The goal of this in vitro study was to determine the insertion torque/time integral for three implant systems. Bone level implants (n = 10; BLT – Straumann Bone Level Tapered 4.1 mm × 12 mm, V3 – MIS V3 3.9 mm × 11.5 mm, ASTRA – Dentsply-Sirona ASTRA TX 4.0 mm × 13 mm) were placed in polyurethane foam material consisting of a trabecular and a cortical layer applying protocols for medium quality bone. Besides measuring maximum insertion torque and primary implant stability using resonance frequency analysis (RFA), torque time curves recorded during insertion were used for calculating insertion torque/time integrals. Statistical analysis was based on ANOVA, Tukey’s honest differences test and Pearson product moment correlation (α = 0.05). Significantly greater mean maximum insertion torque (59.9 ± 4.94 Ncm) and mean maximum insertion torque/time integral (961.64 ± 54.07 Ncm∗s) were recorded for BLT implants (p < 0.01). V3 showed significantly higher mean maximum insertion torque as compared to ASTRA (p < 0.01), but significantly lower insertion torque/time integral (p < 0.01). Primary implant stability did not differ significantly among groups. Only a single weak (r = 0.61) but significant correlation could be established between maximum insertion torque and insertion torque/time integral (p < 0.01) when all data from all three implant groups were pooled. Implant design (length, thread pitch) seems to affect insertion torque/time integral more than maximum insertion torque.

中文翻译：

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插入扭矩/时间积分作为主要种植体稳定性的衡量标准。


这项体外研究的目的是确定三个种植体系统的插入扭矩/时间积分。骨水平种植体（n = 10；BLT – Straumann Bone Level Tapered 4.1 mm × 12 mm、V3 – MIS V3 3.9 mm × 11.5 mm、ASTRA – Dentsply-Sirona ASTRA TX 4.0 mm × 13 mm）放置在聚氨酯泡沫材料中，该材料包括应用中等质量骨方案的小梁和皮质层。除了使用共振频率分析 (RFA) 测量最大插入扭矩和主要种植体稳定性之外，插入过程中记录的扭矩时间曲线还用于计算插入扭矩/时间积分。统计分析基于方差分析、Tukey 诚实差异检验和 Pearson 乘积矩相关性 ( α = 0.05)。 BLT 种植体的平均最大插入扭矩 (59.9 ± 4.94 Ncm) 和平均最大插入扭矩/时间积分 (961.64 ± 54.07 Ncm*s) 显着更高 (p < 0.01)。与 ASTRA 相比，V3 的平均最大插入扭矩显着更高 (p < 0.01)，但插入扭矩/时间积分显着较低 (p < 0.01)。各组之间的初始种植体稳定性没有显着差异。当汇集所有三个种植体组的所有数据时，最大插入扭矩和插入扭矩/时间积分 (p < 0.01) 之间只能建立一个弱 (r = 0.61) 但显着的相关性。种植体设计（长度、螺距）似乎对插入扭矩/时间积分的影响大于对最大插入扭矩的影响。