Wakamatsu Kaien, Doi Kazuya, Kobatake Reiko, Makihara Yusuke, Oki Yoshifumi, Tsuga Kazuhiro
Department of Advanced Prosthodontics, Hiroshima University Graduate School of Biomedical and Health Sciences, HiroshimaJapan.
J Oral Maxillofac Res. 2022 Dec 31;13(4):e1. doi: 10.5037/jomr.2022.13401. eCollection 2022 Oct-Dec.
The purpose of this experimental study was to investigate the correlation between the frictional resistance torque of tap drilling prior to implant placement and the primary stability after implant placement.
Solid rigid polyurethane bone blocks of four different densities were used in this study. A computerized surgical implant motor device was utilized to measure the frictional resistance torque of tap drilling. After the tap torque was measured, the dental implants were inserted at the prepared sites. During the implantation, the insertion torque was recorded, and resonance frequency analysis was performed, the value of which was calculated as the implant stability quotient. Thereafter, the correlation between the tap torque and the primary stability of the implant was evaluated and compared with the standard drilling protocol.
A significant positive correlation was found between the tap torque and insertion torque (Pearson's r = 0.88, P < 0.0001). Similarly, there was a positive correlation between the tap torque and implant stability quotient (Pearson's r = 0.69, P < 0.0001).
These results suggest that measurement of the frictional resistance torque of tap drilling prior to implant placement could provide helpful information for implant primary stability.
本实验研究旨在探讨种植体植入前攻丝钻孔的摩擦阻力扭矩与植入后初期稳定性之间的相关性。
本研究使用了四种不同密度的固体刚性聚氨酯骨块。采用计算机化外科种植动力装置测量攻丝钻孔的摩擦阻力扭矩。在测量攻丝扭矩后，将牙种植体植入准备好的部位。在植入过程中，记录植入扭矩，并进行共振频率分析，其值计算为种植体稳定性商数。此后，评估攻丝扭矩与种植体初期稳定性之间的相关性，并与标准钻孔方案进行比较。
攻丝扭矩与植入扭矩之间存在显著正相关（Pearson相关系数r = 0.88，P < 0.0001）。同样，攻丝扭矩与种植体稳定性商数之间也存在正相关（Pearson相关系数r = 0.69，P < 0.0001）。
这些结果表明，种植体植入前测量攻丝钻孔的摩擦阻力扭矩可为种植体初期稳定性提供有用信息。
