山东大学学报 (医学版) ›› 2021, Vol. 59 ›› Issue (8): 74-79.doi: 10.6040/j.issn.1671-7554.0.2021.0269
尹增正1,2,3,聂晓琨4,王煜1,2,3,马志德1,2,3,熊世江1,2,3
YIN Zengzheng1,2,3, NIE Xiaokun4, WANG Yu1,2,3, MA Zhide1,2,3, XIONG Shijiang1,2,3
摘要: 目的 采用口腔锥形束CT(CBCT)技术对上颌第一前磨牙的牙根、根管及颊根腭侧面沟的形态进行研究,为临床诊疗提供理论依据。 方法 观测就诊于山东大学口腔医院的400例患者的800颗上颌第一前磨牙CBCT影像,以Vertucci分类法为依据,确定牙根和根管的形态,对有颊根腭侧面沟的上颌第一前磨牙进行形态学研究。 结果 上颌第一前磨牙最常见牙根类型为单根型(62.6%),其次为双根型(36.1%),三根型(1.3%)较少见。根管形态中最常见的为Ⅳ型,约占44.0%,然后依次是Ⅱ型、Ⅰ型和Ⅲ型。61.6%的双根型可以观察到颊根腭侧面沟,沟的平均深度和长度分别为0.60、3.25 mm,对应的腭侧壁的最小厚度平均值为0.59 mm。 结论 上颌第一前磨牙牙根及根管形态复杂,颊根腭侧面沟的存在加大了根管治疗的难度,对上颌第一前磨牙牙根、根管形态和颊根腭侧面沟形态的研究,有助于口腔医生了解其解剖特征,提高根管治疗的成功率。
中图分类号:
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