Singh Himani, Sonkesriya Subhash, J Patel Bhumika, Rathod Varsha, Gupta Bharat, Vyas Tarun, Sawhney Anshul, Makkad Ramanpal Singh
Department of Oral Medicine and Radiology, Kothiwal Dental College and Research Centre, Moradabad, Uttar Pradesh, India.
Department of Prosthodontics, Government College of Dentistry, Indore, M.P., India.
Bioinformation. 2023 Feb 28;19(2):221-225. doi: 10.6026/97320630019221. eCollection 2023.
The most frequent instrument used to begin tightening screws is a manually regulated screwdriver. Regarding manually regulated screwdrivers, predicted margins of error vary between fifteen percent to forty eight percent. Mechanical Torque restricting devices can consistently produce the requisite torques. As a result, devices like wrenches are needed to achieve the desirable values of torque. Hence, the present study was designed to evaluate the torque difference between handheld drivers and torque wrench and thereby its effect on the internal threads of implant surface.120 blocks was prepared from an autopolymerizing type of acrylic material each with a dimension of 1 inch. The centre of each block was affixed with analogue of dental impalnts with dimensions of 3.5 mm width and 13 mm length. With 60 specimens each, these models were split into two categories: hand torque specimens category and torque wrench specimens category. A stereomicroscope was used to look at the implant analog's internal threading architecture at a magnification of 100. At the bottom and top, four threads were spaced apart by a certain amount. Biowizard software was used for the assessment, and the results were recorded. Threads on the internal surface of dental implants were produced once more following torquing the implant's impression, and the stereomicroscope was used to quantify the separation between the 4 threads. Statistics were used to correlate the readings. All study participants' hand torque as well as torque wrench measurements were documented and statistical analysis was performed on them. When there was statistical analysis of the measurements then it was observed that mean values of torque in specimens included category of manual torque application was found out to be 33.6 ± 6.510 Ncm. On the other hand the mean values of torque in specimens included in category of torque application by torque wrench were found out to be 33.57 ± 3.472 Ncm. The outcome showed operator heterogeneity for both categories and operator variance when using a manual driver to generate torque. One independent - sample t test was used to contrast the mean data between the two categories, and P< 0.05 was chosen to determine whether the intergroup difference was meaningful. Because the torque values obtained with hand tightening were uneven, it may be concluded that different levels of hand torquing skill caused the torque to fluctuate. The torque wrench device displayed the desired torque data in the range that the manufacturer had advised. However, utilising manual drivers and a mechanical torque instrument did not cause any modifications to thread on the internal surface, and it rarely underwent significant deformation during the preliminary tightening torque readings. Thus, given that manually hand regulated drivers create a range of torques, it may be inferred that the employment of mechanical torque restricting instruments should be required.
用于开始拧紧螺丝的最常用工具是手动调节螺丝刀。关于手动调节螺丝刀,预测的误差范围在15%到48%之间。机械扭矩限制装置可以始终如一地产生所需的扭矩。因此,需要像扳手这样的工具来达到理想的扭矩值。因此,本研究旨在评估手持螺丝刀和扭矩扳手之间的扭矩差异,以及由此对种植体表面内螺纹的影响。用自凝型丙烯酸材料制备了120个块体,每个块体尺寸为1英寸。每个块体的中心固定有尺寸为3.5毫米宽、13毫米长的牙科种植体模拟物。这些模型分为两类,每组60个样本:手动扭矩样本组和扭矩扳手样本组。使用体视显微镜以100倍的放大倍数观察种植体模拟物的内部螺纹结构。在底部和顶部,四条螺纹间隔一定距离。使用Biowizard软件进行评估,并记录结果。在对种植体印模施加扭矩后,再次制作牙科种植体内表面的螺纹,并用体视显微镜测量四条螺纹之间的间距。使用统计学方法对读数进行关联。记录了所有研究参与者的手动扭矩以及扭矩扳手测量值,并对其进行了统计分析。对测量值进行统计分析时,发现手动施加扭矩样本组的扭矩平均值为33.6±6.510 Ncm。另一方面,扭矩扳手施加扭矩样本组的扭矩平均值为33.57±3.472 Ncm。结果显示,两类样本均存在操作者异质性,且使用手动螺丝刀产生扭矩时存在操作者差异。使用单样本t检验对比两类样本的均值数据,选择P<0.05来确定组间差异是否有意义。由于手动拧紧获得的扭矩值不均匀,可以得出结论,不同水平的手动扭矩技能导致了扭矩的波动。扭矩扳手装置显示出制造商建议范围内的理想扭矩数据。然而,使用手动螺丝刀和机械扭矩工具对内表面的螺纹没有造成任何改变,并且在初始拧紧扭矩读数期间很少发生显著变形。因此,鉴于手动调节螺丝刀产生的扭矩范围较大,可以推断应该使用机械扭矩限制工具。