【摘要】 目的研究颞下颌关节不可复性盘前移位(anterior disc displacement without reduction,ADDWoR)的危险因素。方法将研究对象分为两组,ADDWoR患者纳入病例组,无ADDWoR症状的其他疾病患者或健康志愿者纳入对照组。分析两组人群面型、咬合因素、精神状况、口腔不良习惯及社会经济等方面的差异,计算各因素的比值比(odds ratio,OR),比较对该疾病的危险度。结果病例组132人,平均年龄26.55岁;对照组128人,平均年龄26.97岁。病例组和对照组年龄、性别均衡。危险度较大的暴露因素有偏侧咀嚼(OR=3.16)、下颌中线偏斜(OR=3.074)、功能性错畸形(OR=2.917)。结论ADDWoR是多致病因素的疾病,牙功能紊乱是重要的致病因素,而下颌运动异常和不良的咀嚼习惯也是不容忽视的重要因素。更多还原

【Abstract】 Objective To analyze the factors responsible for temporomandibular disc displacement without reduction.MethodsThe patients without history of orthodontic treatment or maxillofacial trauma were diagnosed by arthrography.One hundred and thirty-two patients were included in the control group(16 males,116 females)with a mean age of 26.55 years.One hundred and twenty-eight asymptomatic volunteers with a mean age of 26.97 years formed the control group(14 males,114 females).Clinical examinations included facial morphologic features,occlusion,periodontal features etc.Other factors like abnormal oral habits and socioeconomic status factors in all subjects were considered.ResultsCreated the data-base by SPSS 13.0.Analyzed the data using t-test,χ2 test,and educe the OR & 95% CI of all exposed factors.The unilateral chewing habit(OR=3.166,95% CI:1.912-5.244),lower midline shift(OR=3.074,95% CI:1.428-6.11),functional malocclusion(OR=2.917,95% CI:1.93-4.40),and missing teeth(OR=2.806,95% CI:1.291-76.103)were found to have associations with ADDWoR.However,not much association was found on maxillary asymmetry and psychological factors.ConclusionADDWoR is a multi-factor disease.The results show that malocclusion is an important factor that induces ADDWoR.But the chewing habit together with the missing teeth also play their roles.So not only the TMJ treatment but also the suggested chewing habit and occlusal therapy are to be given.更多还原