Clinical Assistant Professor, Department of Prosthodontics, YongDong Severance Dental Hospital, College of Dentistry, Yonsei University, Seoul, Korea.
J Adv Prosthodont. 2009 Mar;1(1):37-40. doi: 10.4047/jap.2009.1.1.37. Epub 2009 Mar 31.
Implant drivers are getting popular in clinical dentistry. Unlike to implant systems with external hex connection, implant drivers directly engage the implant/abutment interface. The deformation of the implant/abutment interface can be introduced while placing an implant with its implant driver in clinical situations.
This study evaluated the change of rotational freedom between an implant and its abutment after application of different insertion torques.
Three kinds of internal connection implants were utilized for the current study (4.5 × 12 mm Xive, 4.3 × 11.5 mm Inplant Magicgrip, 4.3 × 12 mm Implantium MF). An EstheticBase, a 2-piece top, a Dual abutment was used for its corresponding implant system. The rotational freedom between an implant and its abutment were measured before and after applying 45, 100 Ncm insertion torque. Repeated measures ANOVA was used for statistical analysis.
Under 45 Ncm insertion torque, the rotational freedom between an implant and its abutment was significantly increased in Xive (P = .003). However, no significant change was noted in Inplant Magicgrip and Implantium MF. Under 100 Ncm torque, both in Xive (P = .0005) and Implatium MF (P = .03) resulted in significantly increased rotational freedom between the implant and its abutment.
The design of the implant/implant driver interface effectively prevented the deformation of implant/abutment interface. Little change was noted in the rotational freedom between an implant and its abutment, even though the insertion torque was far beyond clinical application.
The implant/abutment joint of internally connecting implants were quite stable under insertion torque in clinical situation.
种植体驱动器在临床牙科中越来越受欢迎。与具有外六方连接的种植系统不同，种植体驱动器直接与种植体/基台接口啮合。在临床情况下，用其种植体驱动器放置种植体时，可能会引入种植体/基台接口的变形。
本研究评估了在施加不同插入扭矩后，种植体和其基台之间的旋转自由度的变化。
本研究使用了三种内部连接种植体（4.5×12mm Xive、4.3×11.5mm Inplant Magicgrip、4.3×12mm Implantium MF）。为相应的种植系统使用了一个 EstheticBase、一个 2 部分顶、一个双基台。在施加 45、100Ncm 插入扭矩之前和之后，测量种植体和其基台之间的旋转自由度。使用重复测量方差分析进行统计分析。
在 45Ncm 插入扭矩下，Xive 种植体和其基台之间的旋转自由度显著增加（P=0.003）。然而，在 Inplant Magicgrip 和 Implantium MF 中没有观察到显著变化。在 100Ncm 扭矩下，Xive（P=0.0005）和 Implatium MF（P=0.03）都导致种植体和其基台之间的旋转自由度显著增加。
种植体/种植体驱动器接口的设计有效地防止了种植体/基台接口的变形。即使插入扭矩远远超过临床应用，种植体和其基台之间的旋转自由度也没有明显变化。
在临床情况下，内部连接种植体的种植体/基台接头在插入扭矩下非常稳定。
