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- 2018
成人AngleⅠ、AngleⅡ1和AngleⅡ2类错牙合畸形髁突形态和位置的CBCT对比研究
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Abstract:
摘要 目的: 应用CBCT对无主观关节症状的成人AngleⅠ类、AngleⅡ1类和AngleⅡ2类错牙合畸形患者的髁突形态位置进行对比观察研究。方法: 选择AngleⅠ类、AngleⅡ1类和AngleⅡ2类错牙合畸形患者各19例行CBCT扫描,应用CBCT专用软件Invivo 5.0分析测量颞下颌关节前间隙、上间隙、后间隙、颞下颌关节窝的深度、髁突最大近远中径和最大内外径等相关参数,并运用SPSS 21.0软件包对3组数据进行统计学分析,比较AngleⅠ类、AngleⅡ1类和AngleⅡ2类错牙合畸形患者的髁突形态位置差异。结果: AJS(mm)在AngleⅠ类组与AngleⅡ1类组间和AngleⅠ类组与AngleⅡ2类组间差异有统计学意义;PJS(mm)在3组中两两组间差异均有统计学意义;DMF(mm)在AngleⅠ类组与AngleⅡ1类组间和AngleⅠ类组与AngleⅡ2类组间差异均有统计学意义;MD(mm)在AngleⅠ类组与AngleⅡ1类组间差异有统计学意义。髁突在关节窝的位置AngleⅠ类组主要表现居中位,占50%;AngleⅡ1类组和AngleⅡ2类组主要表现为髁突后移位,分别占55%、84%。结论: AngleⅡ1类和AngleⅡ2类错牙合畸形的颞下颌关节前间隙大于AngleⅠ类;AngleⅡ2类错牙合畸形的颞下颌关节后间隙小于AngleⅡ1类,AngleⅡ1类错牙合畸形的颞下颌关节后间隙小于AngleⅠ类;AngleⅡ类错牙合畸形的颞下颌关节后移位
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