Department of Orthodontics, School of Dentistry, Showa University.
Department of Engineering Design, Tamagawa University College of Engineering.
Dent Mater J. 2022 Jul 30;41(4):534-544. doi: 10.4012/dmj.2021-176. Epub 2022 Mar 24.
It is difficult to control corrective forces in orthodontic treatment with clear aligners. The grip of aligners on teeth is important to ensure accurate corrective forces from aligners. This study aimed to measure the gripping force of aligners under various conditions to clarify factors that influence it. We created aligners with different attachment morphologies and placement sites and different margin lengths. We developed a device to measure the mechanics involved in the removal of these aligners. The gripping force was evaluated at five different aligner removal sites on the teeth. We found that the gripping force of the aligner was the weakest on the lingual side of the first molar and strongest on the labial side of the central incisors and that the attachment morphology and placement sites affected the gripping force of aligners.
在使用透明牙套进行正畸治疗时，很难控制矫正力。牙套对牙齿的固位力对于确保牙套施加的矫正力准确非常重要。本研究旨在测量各种条件下牙套的固位力，以明确影响固位力的因素。我们制作了具有不同附件形态和放置部位以及不同边缘长度的牙套。我们开发了一种测量去除这些牙套的力学的装置。在牙齿的五个不同的牙套去除部位评估了固位力。我们发现牙套的固位力在第一磨牙的舌侧最弱，在中切牙的唇侧最强，并且附件形态和放置部位影响牙套的固位力。
