Int J Stomatol

Inter J Stomatol ›› 2010, Vol. 37 ›› Issue (01): 30-32，35.doi: 10.3969/j.issn.1673-5749.2010.01.009

• Original Articles • Previous Articles     Next Articles

Lower joint cavity treatment of temporomandibular joint with anterior disc displa

LIU Jun-jie1, MU Hong2, ZHANG Dong-sheng1, LONG Xing3, WANG Qing-hua1, FU Xiu-lan1.   

  1. 1. Dept. of Oral and Maxillofacial Surgery, The Affiliated Provincial Hospital, S
  • Received:2009-06-01 Revised:2009-09-14 Online:2010-01-20 Published:2010-01-20
  • Contact: MU Hong

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Abstract: Objective To study the clinical effects of the lower joint cavity treatment on the patients with anterior disc displacement without reduction（ADDw/oR） of temporomandibular joint（TMJ）. Methods 56 patients with ADDw/oR were randomly divided into two groups: The upper joint cavity treatment group and the lower joint cavity treatment group. Manual reduction was used on all the patients after intra-articular injection of hyaluronate. And then, they were treated with the Michigan stabilization splint. At last, friction index values were recorded and used to evaluate the curative effect. Results The maximal mouth-opening degrees in the upper and lower joint cavity treatment groups increased more significantly than those in pre-treatment（P<0.01）, and friction index values decreased more significantly than those before treatment（P<0.01）. In the lower joint cavity treatment group, the improving degrees of maximal mouth-opening increased more significantly than those in upper joint cavity treatment group（P<0.05）, and friction index values were also obviously lower than those in upper joint cavity treatment group（P<0.05）. Conclusion On the patients with ADDw/oR, the clinical effects of the lower joint cavitytreat-ment are superior to those of the upper joint cavity treatment.

Key words: lower joint cavity, temporomandibular joint, anterior disc displacement without reduction

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