Ishizaki-Terauchi Aiko, Ishida Yuji, Okuzawa-Iwasaki Makiko, Shimizu-Tomoda Chiyo, Ono Takashi
Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Institute of Science Tokyo (Science Tokyo), Tokyo 113-8549, Japan.
Private Practice, Tokyo 156-0053, Japan.
J Clin Med. 2024 Nov 25;13(23):7115. doi: 10.3390/jcm13237115.
: Many reports on orthodontic miniscrew insertion focus on insertion conditions, such as technique, but not on the insertion environment, such as the operator's dominant hand. This study aimed to ascertain whether the operator's dominant hand affects laterality in the success rate of manual and motorized miniscrew insertion methods. : This study retrospectively investigated the medical records of 250 Japanese patients, aged ≥15 years, who underwent miniscrew implantation in the maxilla by right-handed operators with at least 3 years of experience. A cross-tabulation analysis, Chi-square test, and multiple logistic regression analysis were performed to compare the success rates of the two insertion methods. : A total of 454 screws were implanted (346 manual and 108 motorized), with an overall success rate of 79.2%. No significant difference was observed in the success rate between the manual (77.7%) and motorized groups (84.2%). Regarding the laterality of the overall success rate, the right-side success rate (84.1%) was significantly higher than that of the left side (75.6%). The right-side success rate in the manual group (82.7%) was significantly higher than that of the left-side (73.0%). In the motorized group, no significant difference was observed between the success rate of insertion on the right (84.6%) and left sides (83.9%). Multiple regression analysis showed that the miniscrew insertion stability was influenced by the insertion side and the operator's years of experience. : The manual screw insertion method was susceptible to environmental factors and less successful in left-side insertion by right-handed operators.
许多关于正畸微螺钉植入的报告都聚焦于植入条件，比如技术，但并未关注植入环境，比如操作者的优势手。本研究旨在确定操作者的优势手是否会影响手动和电动微螺钉植入方法成功率的偏侧性。
本研究回顾性调查了250名年龄≥15岁、由至少有3年经验的右利手操作者在上颌进行微螺钉植入的日本患者的病历。进行了交叉表分析、卡方检验和多元逻辑回归分析，以比较两种植入方法的成功率。
总共植入了454颗螺钉（346颗手动植入和108颗电动植入），总体成功率为79.2%。手动组（77.7%）和电动组（84.2%）的成功率未观察到显著差异。关于总体成功率的偏侧性，右侧成功率（84.1%）显著高于左侧（75.6%）。手动组中右侧成功率（82.7%）显著高于左侧（73.0%）。在电动组中，右侧（84.6%）和左侧（83.9%）的植入成功率未观察到显著差异。多元回归分析表明，微螺钉植入稳定性受植入侧和操作者的经验年限影响。
手动螺钉植入方法易受环境因素影响，右利手操作者在左侧植入时成功率较低。
