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Stress change of periodontal ligament of the anterior teeth at the stage of space closure in lingual appliances: a 3-dimensional finite element analysis

LIU Da-wei¹, LI Jing¹, GUO Liang², RONG Qi-guo², ZHOU Yan-heng^1,^△

颊侧加力0.75 N关闭拔牙间隙时牙周膜最大主应力分布图