Volume 42 Issue 6
Jul.  2021
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Article Navigation >  Journal of Kunming Medical University  > 2021  >  42(6): 115-118
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Citation: Ran-ping XIAO, Hong-mei ZHAO, Ye ZHANG, Qiong RONG, Yu GUO, Xiao-bing TAN. A Retrospective CBCT Analysis of the Characteristics of Root Canal Systems of Mandibular Molars in a Kunming Population[J]. Journal of Kunming Medical University, 2021, 42(6): 115-118. doi: 10.12259/j.issn.2095-610X.S20210629
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A Retrospective CBCT Analysis of the Characteristics of Root Canal Systems of Mandibular Molars in a Kunming Population

doi: 10.12259/j.issn.2095-610X.S20210629

  • Center of Stomatology，The First People’s Hospital of Yunnan Province，Kunming Yunnan 650032，China

  • Received Date: 2021-04-28
    Available Online: 2021-07-09
  • Publish Date: 2021-07-21
    Abstract
  •   Objective  To investigate the characteristics of root canal system of mandibular first and second molars ina Kunming population with cone-beam computed tomography technology.  Methods  CBCT dada of 1229 mandibular first and second molar from 358 patients were collected. The root canal number, classification and incidence of radix entomolaris and C-shaped canalswere calculated to conclude their characteristics.  Results  The majority of mandibular first molars （73.96%） showed 4 canals, 19.73% with 3 canals, 4.48% with 5 canals, 0.33% with 2 canals. The incidence of radix entomolaris was 14.43%. The incidence of C-shaped canals in mandibular second molars was 30.83%.There was a significant difference of incidence in female than that in male （34.95% > 26.81%, P < 0.05）. The incidence of C-shaped canals in group 1 and 2 was higher than that in group 3 and 4 （P < 0.05）. Most of the C-shaped canals were C1 and C2 type at the level of orifice （81.35%）, 70.47% being C2 and C3 type at the level of middle and 83.42% being C3 and C4 type at the level of apical 3mm.  Conclusion  More attention must be paid when treating mandibular first and second molars in Kunming population bucause there is a high incidence of radix entomolaris and C-shaped canal.
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    • References(9)
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