PDF(Pubmed)
Abstract：
This study aims to refine clinical designs within clear aligner therapy, exploring the appropriate ratio of anterior tooth retraction to intrusion under maximum anchorage. Using a three-dimensional finite element model and evaluating 19 load scenarios with first premolar extraction, the research identifies the optimal force angle for anterior tooth retraction as 45 to 55°. For clinical planning, it is recommended to design a retraction of 0.19 mm combined with an intrusion of 0.16 mm to achieve anterior tooth retraction. This investigation is crucial for enhancing understanding of biomechanical principles in clear aligner orthodontics, offering significant insights for effective treatments.
摘要：
本研究旨在完善明确对准治疗的临床设计，探索最大支抗下前牙缩回与侵入的合适比例。使用三维有限元模型，并评估19种负载情况与第一个前磨牙提取，该研究确定了前牙缩回的最佳力角度为45至55°。对于临床计划，建议设计0.19mm的回缩和0.16mm的侵入以实现前牙回缩。这项研究对于增强对清晰矫正器正畸中生物力学原理的理解至关重要，提供有效治疗的重要见解。
