Abraham Sheela Balu, Gopinath Vellore Kannan
Department of General and Specialist Dental Practice, College of Dental Medicine, Sharjah, UAE.
Eur J Dent. 2015 Oct-Dec;9(4):476-482. doi: 10.4103/1305-7456.172618.
The purpose of this study was to determine the root canal anatomy of mandibular first premolar teeth in an Emirati subpopulation using a decalcification and clearing method.
One hundred permanent mandibular first premolar teeth extracted for orthodontic purposes from an Emirati subpopulation from the United Arab Emirates were used for this study. They were subjected to decalcification and clearing. The tooth length, the canal orifice shape, mesial invagination, canal pattern, the location of apex, presence of lateral canals, and intercanal communications were determined.
The most common canal pattern was the Vertucci Type I (65%) followed by Type V (14%) and Type IV (13%). The most common type of canal orifice seen was the oval shape (36%) followed by the round shape (25%). Mesial invaginations were seen in 44% of the teeth. The mean tooth length was 19.9 mm, and apical deltas were seen in 24% of teeth.
The Vertucci Type I canal pattern was the most prevalent in the mandibular first premolars while the occurrence of multiple canals was noted in 35% of this population.
本研究的目的是使用脱钙和透明法确定阿联酋亚人群中下颌第一前磨牙的根管解剖结构。
本研究使用了从阿拉伯联合酋长国的一个阿联酋亚人群中因正畸目的拔除的100颗恒牙下颌第一前磨牙。对它们进行脱钙和透明处理。确定牙齿长度、根管口形状、近中内陷、根管形态、根尖位置、侧支根管的存在以及根管间交通情况。
最常见的根管形态是维尔图奇I型（65%），其次是V型（14%）和IV型（13%）。最常见的根管口类型是椭圆形（36%），其次是圆形（25%）。44%的牙齿可见近中内陷。平均牙齿长度为19.9毫米，24%的牙齿可见根尖分歧。
维尔图奇I型根管形态在下颌第一前磨牙中最为普遍，而该人群中35%的牙齿存在多根管情况。
