Manhartsberger C, Morton J Y, Burstone C J
University of Connecticut Health Center, School of Dental Medicine, Department of Orthodontics, Farmington 06032.
Angle Orthod. 1989 Fall;59(3):205-10. doi: 10.1043/0003-3219(1989)059<0205:SCIAPU>2.0.CO;2.
Periodontally compromised adult patients may benefit from modified appliance designs for space closure. TMA T-loops of .016" x .022" and .017" x .025" cross sections, with angulations incorporated via concentrated bends and gradual curvature bends are presented. The force systems these appliances produce are measured, and their clinical performances discussed. Templates for these T-loops are presented. By producing lower forces and higher moment to force ratios, this type of T-loop may benefit patients with bony loss.
牙周状况不佳的成年患者可能会从用于关闭间隙的改良矫治器设计中获益。本文介绍了横截面为0.016英寸×0.022英寸和0.017英寸×0.025英寸的TMA T形曲，通过集中弯曲和逐渐弯曲的方式纳入角度。测量了这些矫治器产生的力系统，并讨论了它们的临床性能。还给出了这些T形曲的模板。通过产生较低的力和较高的力矩与力的比值，这种类型的T形曲可能会使骨质流失的患者受益。
