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Clin oral invest:CBCT分析下颌第二磨牙根管形态及变异

2017-12-16 MedSci MedSci原创

本研究的目的是使用锥形束计算机断层扫描(CBCT)图像来研究印度人群下颌第二恒磨牙的根管形态。

本研究的目的是使用锥形束计算机断层扫描(CBCT)图像来研究印度人群下颌第二恒磨牙的根管形态。

方法:对未经处理,完全发育的下颌第二恒磨牙的CBCT图像(n = 983;男性= 489,女性= 494)进行检查。 CBCT是作为与本研究无关的治疗的诊断和治疗计划的一部分。记录牙根和根管的数量。根管形态根据Vertucci和Fan进行分类。

结果:最常见的是两个(79.35%)和三个根管(53.50%)。所研究的牙齿中,三根磨牙的发生率为7.53%,C形融合根发生率为13.12%。近中根根管主要为Vertucci IV型(45.17%),其次是II型(32.55%),I型(7.23%),V型(1.02%),III型(0.91%)。远端根管形态以Ⅰ型(61.14%)为主,其次为Ⅱ型(18.21%),Ⅳ型占7.53%。男性三根磨牙的发生率(55例,5.59%)高于女性(19例,1.94%)(p <0.01)。额外根根管为I型(100%)。在C形根管(13.12%)的牙齿中,牙冠,冠中和根尖的变化范围为C1到C4。

结论:研究人群下颌第二磨牙近中根的根管系统表现出高度的变异性。虽然三根很少,但有一种性倾向。C形融合根是罕见的,并且表现出从冠到根尖之间的显着变化。

原始出处:

Ajinkya Mansing Pawar, et al. Root canal morphology and variations in mandibular second molar teeth of an Indian population: an in vivo cone-beam computed tomography analysis. Clinical oral investigstions. 2017 December. doi:10.1007/s00784-017-2082-6

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    2018-07-18 小几洁
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    2018-09-09 xlysu
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