Use of CBCT to investigate the root canal morphology of mandibular incisors

Lin, Zitong; Hu, Qingang; Wang, Tiemei; Ge, Jianli; Shu, Liu; Zhu, Min; Wen, Shanhui

doi:10.1007/s00276-014-1267-9

Cited by 74 publications

(92 citation statements)

References 23 publications

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“…15 Although the rates of bilateral double root canal were relatively lower in the present study, the finding that the bilateral double root canal was seen more in the incisors is similar. In another study conducted on mandibular incisors, overall symmetry in the root canal numbers was found in 94-95% of the cases, 11 compared to 90-95% in the current study (Table 3).…”

Section: Discussionmentioning

confidence: 78%

“…This finding is quite similar to that of a previous Turkish study, 21 although other studies have reported a statistically significant difference between genders for the incisors. 11,23 Age displayed an inverse relationship with the frequency of two root canals, probably due to the deposition of secondary dentin in the root canal, which may ultimately result in obliteration of the root canal space. In support of this possibility, a previous study of the maxillary incisors found that the root canal space decreases with increasing age, 28 and that the middle mesial root canal in mandibular molars is less frequently seen in older patients.…”

Section: Discussionmentioning

confidence: 99%

“…Morphologies and root canal configurations of mandibular incisors and canines have been extensively studied by various techniques. 6,10,11,15,17,18,19,20,21,22,23 The presence of two roots in a mandibular incisor is a rare finding. 24 In this study, two roots were observed in the lateral incisors of two female patients.…”

Section: Discussionmentioning

confidence: 99%

“…12 Although symmetry of the root and root canal morphologies of premolar and molar teeth have been investigated by CBCT, 13,14 symmetry of the mandibular incisors and canines has only been investigated recently and in a limited number of studies. 11,15 Therefore, the aims of this study were to investigate the relationship between demographic variables (age and gender) and the number of roots and root canals in the mandibular anterior teeth of a Turkish population, and to determine the symmetry in the numbers of roots and root canals between contralateral sides in the same patient.…”

Section: Introductionmentioning

confidence: 99%

“…4 Root canal morphology has generally been investigated in extracted teeth by cross-sectioning, clearing, operating or scanning electron microscopy, or radiographic examination, 5,6,7,8,9 such as periapical radiography, cone-beam computed tomography (CBCT), and micro-computed tomography. 4,8,10,11 Radiographic techniques allow for screening a large number of teeth for morphological evaluation.…”

Section: Introductionmentioning

confidence: 99%

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Root and canal symmetry in the mandibular anterior teeth of patients attending a dental clinic: CBCT study

et al. 2015

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Root and canal symmetry in the mandibular anterior teeth of patients attending a dental clinic: CBCT study Abstract: The aims of this study were to evaluate the number of roots/root canals in the mandibular anterior teeth of a Turkish population, to assess the relationship between gender or age and the frequency of two canals in a single root, and to determine the symmetry in root/root canal numbers between contralateral sides among patients. Cone-beam computed tomography images (n = 1128; 6253 teeth) taken at the Department of Dentomaxillofacial Radiology of the Faculty of Dentistry of Gazi University were examined by three observers and a supervisor, all of whom were blinded to patient gender and age. Axial, sagittal, and cross-sectional slices with a thickness of 1 mm were used. Numbers of roots and canals for each type of tooth were recorded. Most teeth had a single root and single root canal. Roots with two canals were more frequent in the incisors (14.9%, 17.2%, and 6.1% of the central incisors, lateral incisors, and canines, respectively). Teeth with two roots were more frequent in the canines (3.1% vs. 0% or 0.1%). Females more often had canines with double root canals (p < 0.001). When at least one tooth had two root canals, bilateral symmetry between contralateral teeth was found in 45.0%, 29.0%, and 28.0% of cases for central incisors, lateral incisors, and canines, respectively. Patients older than 56 years had fewer teeth with double root canals (p ≤ 0.001). A small proportion of the mandibular anterior teeth had two roots or root canals. Double root canals were mostly unilateral. Age and gender were associated with the number of root canals.

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Section: Discussionmentioning

confidence: 78%