Center of Excellence for Dental Implantology, Faculty of Dentistry, Chiang Mai University, Suthep, A. Muang, Chiang Mai, 50200, Thailand.
Int J Implant Dent. 2021 Oct 4;7(1):98. doi: 10.1186/s40729-021-00378-z.
The aim of this study was to compare removal torque values after mechanical cyclic loading and bending moment after the static compression testing of customized titanium abutment compared with prefabricated and hybrid abutments.
The study was developed according to ISO 14801:2016. Sixty implants were divided into three groups equally: Straight titanium abutment group, Customized titanium abutment group, and Hybrid zirconia abutment group. Abutments were fabricated with zirconia restoration. Forty five implants underwent for cyclic loading. The removal torque values were measured after a fatigue test was conducted at 0 cycles (control), 50,000 cycles and 1,000,000 cycles. In the second experiment, 15 implants were divided into the same groups. Then, bending moments were investigated.
The mean initial removal torque value was significantly higher than 50,000 cycles and 1,000,000 cycles (P < 0.001). The comparison of mean removal torque value between types of abutments was not significantly different (P > 0.05), and the bending moments of all abutments were not significantly different (P > 0.05).
From the boundary of this in-vitro study, it could be concluded that customized titanium abutment and hybrid abutment were not significantly different in terms of removal torque values after the fatigue test. The bending moment between types of abutment were not significantly different. Thus, it could be concluded that abutment type does not significantly influence abutment stability or fracture strength.
本研究旨在比较定制钛基台与预制基台和混合基台在经受机械循环加载和静态压缩测试后的弯曲力矩后的去除扭矩值。
本研究根据 ISO 14801:2016 进行。将 60 个种植体均分为三组:直钛基台组、定制钛基台组和混合氧化锆基台组。基台采用氧化锆修复体制作。45 个种植体进行循环加载。在疲劳试验中,在 0 个循环(对照)、50000 个循环和 1000000 个循环后测量去除扭矩值。在第二个实验中,将 15 个种植体分为相同的组。然后,研究了弯曲力矩。
初始去除扭矩值的平均值显著高于 50000 个循环和 1000000 个循环(P<0.001)。基台类型之间的平均去除扭矩值无显著差异(P>0.05),所有基台的弯曲力矩也无显著差异(P>0.05)。
从本体外研究的界限来看,可以得出结论,定制钛基台和混合基台在疲劳试验后的去除扭矩值方面没有显著差异。基台类型之间的弯曲力矩没有显著差异。因此,可以得出结论,基台类型不会显著影响基台的稳定性或断裂强度。