四川大学学报（医学版）2011，Vol.42Issue(6)：835-837,845,4.
推杆式矫治器不同加载角度下“下颌骨-颞下颌关节”的生物力学研究
Biomechanical Study of “Mandible-temporomandibular Joint” under Different Loading Angles with Forsus
摘要
Abstract
Objective To identify the best loading angle with Forsus for mandible-temporomandibular joint. Methods The changes in stress, displacement and rotation of "mandible-temporomandibular joint" were tested under ―30°, -15°,0°, 15° and 25° of loading angles using a primary three dimensional finite element model. Results From 0° to 25°, with the increases of loading angles the displacement gradually increased. The maximum displacement occurred at chin, with 1. 692 mm, 3. 456 mm and 4. 630 mm displacement under 0°, 15° and 25° respectively. The maximum displacement occurred at the alveolar ridge under -15° loading, which was 0. 069 mm. No special stress concentration region was identified. The displacements from infradentale to pogonion gradually increased under all conditions except for the - 15° loading. With the loading angles deviated from the baseline farther, the porrect displacements of chin and the counterclockwise rotation became more obvious. Conclusion The loading angles of Forsus appliance should be controlled between 0° and 25°.关键词
Forsus/加载角度/旋转/生物力学研究Key words
Forsus/ Loading angle/ Rotation/ Biomechanical study引用本文复制引用
李丽华,宋锦磷,高翔,邓锋,李娜..推杆式矫治器不同加载角度下“下颌骨-颞下颌关节”的生物力学研究[J].四川大学学报（医学版）,2011,42(6):835-837,845,4.基金项目
重庆市教育委员会科学技术研究项目(kj060316)资助 （kj060316）
