Incidence of anterior disc displacement without reduction of the temporomandibular joint in patients with dentofacial deformity
Incidence of anterior disc displacement without reduction of the temporomandibular joint in patients with dentofacial deformity
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DOI：
10.1016/j.ijom.2017.11.017
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发表时间：
2018-04-01
影响因子：
2.4
通讯作者：
Tei, K.
中科院分区：
文献类型：
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作者：
Ooi, K.;Inoue, N.;Tei, K.
本研究的目的是探讨牙面畸形患者颞下颌关节（TMJ）前盘移位不复位（ADDwoR）的发生率。对骨类错合女性患者88例（176个关节）和骨类错合女性患者33例（66个关节），伴或不伴前牙合开放和不对称。采用颞下颌关节磁共振成像（MRI）诊断ADDwoR。统计分析ADDwoR与骨骼结构之间的关系。II类66个关节中有37个（56.1%）出现ADDwoR，而III类176个关节中有34个（19.3%）出现ADDwoR，差异有统计学意义（P < 0.05）。在第三类中，下颌不对称关节的ADDwoR发生率（24/74;32.4%）明显高于开放咬合关节（9/62;14.5%）和开放咬合但不存在下颌不对称关节（1/38;2.6%）。在II类中，下颌不对称和无开咬的关节中ADDwoR的发生率明显较低（1/8;12.5%）。在下颌不对称的III类和II类患者中，仅在偏侧观察到ADDwoR。adwor的患病率因牙面形态不同而不同。
The aim of this study was to investigate the incidence of anterior disc displacement without reduction (ADDwoR) of the temporomandibular joint (TMJ) in patients with dentofacial deformity. Eighty-eight female patients (176 joints) with skeletal class III malocclusion and 33 female patients (66 joints) with skeletal class II malocclusion, with or without anterior open bite and asymmetry, were evaluated. Magnetic resonance imaging (MRI) of the TMJ was used to diagnose ADDwoR. A statistical analysis was performed to examine the relationship between ADDwoR and skeletal structure. ADDwoR was present in 37 of the 66 joints (56.1%) in class II compared to 34 of the 176 joints (19.3%) in class III (P < 0.05). In class III, ADDwoR was significantly more common in joints with mandibular asymmetry (24/74; 32.4%) than in joints with open bite (9/62; 14.5%) and joints with open bite and without mandibular asymmetry (1/38; 2.6%). In class II, ADDwoR was significantly less common in joints with mandibular asymmetry and without open bite (1/8; 12.5%). ADDwoR was only observed on the deviated side in both class III and class II with mandibular asymmetry. The prevalence of ADDwoR differed according to the dentofacial morphology.