Biomechanical effects of a new crimpable gate spring combined with conventional rectangular archwires for torque adjustment of individual anterior teeth : A comparative finite element study.

IF 1.3 4区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE
Jia-Rong Liu, Xin-Ran Xu, Xing-Yue Wang, Yan Zhang, Xiao-Ming Wang
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引用次数: 0

Abstract

Objective: Precise root torque adjustment of anterior teeth is indispensable for optimizing dental esthetics and occlusal stability in orthodontics. The efficiency of traditional rectangular archwire manipulation within bracket slots seems to be limited. The crimpable gate spring, a novel device, has emerged as a promising alternative. Yet, there is a paucity of guidelines for its optimal clinical application. This study used finite element analysis (FEA) to investigate the biomechanical impact of the gate spring on torque adjustment of individual anterior teeth and to elucidate the most effective application strategy.

Methods: A FEA model was constructed by a maxillary central incisor affixed with an edgewise bracket featuring a 0.022 × 0.028 inch (in) slot. A range of stainless steel rectangular archwires, in conjunction with a gate spring, were modeled and simulated within the bracket slots. A control group utilized a conventional rectangular wire devoid of a gate spring. Palatal root moments were standardized to 9, 18, and 36 Nmm for both experimental and control groups.

Results: The gate spring significantly amplified palatal root movement, notably with the 0.019 × 0.025 in archwire. However, this was accompanied by an increase in stress on the tooth and periodontal ligament, particularly in the cervical regions. The synergistic use of a 0.019 × 0.025 in rectangular archwire with a gate spring in a 0.022 × 0.028 in bracket slot was identified as most efficacious for torque control of individual anterior teeth.

Conclusions: The gate spring is a viable auxiliary device for enhancing torque adjustment on individual teeth. However, caution is advised as excessive initial stress may concentrate in the cervical and apical regions of the periodontal ligament and tooth.

用于个别前牙扭力调整的新型压接式门弹簧与传统矩形弓丝的生物力学效应:有限元比较研究。
目的:在正畸过程中,前牙根部扭矩的精确调整对于优化牙齿美学和咬合稳定性是不可或缺的。传统的矩形弓丝在托槽内的操作效率似乎有限。可卷曲闸板弹簧作为一种新型装置,已成为一种很有前途的替代方案。然而,关于其最佳临床应用的指南却很少。本研究使用有限元分析(FEA)来研究门弹簧对个别前牙扭力调节的生物力学影响,并阐明最有效的应用策略:有限元分析模型由一颗上颌中切牙构建而成,该上颌中切牙上有一个 0.022 × 0.028 英寸(英寸)的边缘托槽。在托槽内对一系列不锈钢矩形弓丝和门弹簧进行了建模和模拟。对照组使用的是没有门弹簧的传统矩形弓丝。实验组和对照组的腭根力矩标准化为 9、18 和 36 Nmm:结果:门弹簧明显增加了腭根的移动,尤其是在弓丝为 0.019 × 0.025 的情况下。然而,随之而来的是牙齿和牙周韧带的应力增加,尤其是在牙颈部。在 0.022 × 0.028 英寸的托槽中使用 0.019 × 0.025 英寸的矩形弓丝和门式弹簧的协同作用被认为对个别前牙的扭矩控制最为有效:结论:门弹簧是一种可行的辅助装置,可用于加强对个别牙齿的扭矩调节。但需要注意的是,过大的初始应力可能会集中在牙周韧带和牙齿的颈部和根尖部位。
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来源期刊
CiteScore
3.90
自引率
0.00%
发文量
64
审稿时长
>12 weeks
期刊介绍: The Journal of Orofacial Orthopedics provides orthodontists and dentists who are also actively interested in orthodontics, whether in university clinics or private practice, with highly authoritative and up-to-date information based on experimental and clinical research. The journal is one of the leading publications for the promulgation of the results of original work both in the areas of scientific and clinical orthodontics and related areas. All articles undergo peer review before publication. The German Society of Orthodontics (DGKFO) also publishes in the journal important communications, statements and announcements.
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