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Canal configuration and root morphology of mandibular premolars using cone-beam computed tomography in a Korean population

Authors
 Yoon Joo Choi  ;  Chena Lee  ;  Kug Jin Jeon  ;  Ji-Taek Jang  ;  Sang-Sun Han 
Citation
 CLINICAL ORAL INVESTIGATIONS, Vol.26(3) : 3325-3332, 2022-03 
Journal Title
CLINICAL ORAL INVESTIGATIONS
ISSN
 1432-6981 
Issue Date
2022-03
MeSH
Adult ; Bicuspid / anatomy & histology ; Bicuspid / diagnostic imaging ; Cone-Beam Computed Tomography / methods ; Dental Pulp Cavity* / anatomy & histology ; Dental Pulp Cavity* / diagnostic imaging ; Female ; Humans ; Male ; Mandible / anatomy & histology ; Mandible / diagnostic imaging ; Republic of Korea ; Tooth Root* / anatomy & histology ; Tooth Root* / diagnostic imaging
Keywords
Cone-beam computed tomography ; Endodontics ; Korean population ; Mandibular premolars ; Root canal morphology
Abstract
Objectives: This study aimed to investigate the anatomy of mandibular premolars from two perspectives-the canal configuration and radicular grooves-using cone-beam computed tomography (CBCT) in a large Korean population.

Materials and methods: CBCT images of mandibles acquired from March 2018 to December 2019 for dental treatment were randomly selected. In each image, the root canal of premolars was classified into 8 types according to the canal merging or diverging pattern and the number of apical foramens. The presence and the location of radicular grooves were also assessed. Statistical analysis was performed.

Results: A total of 1463 first and 1448 s premolars from 732 patients (390 males, 342 females, mean age of 36.1 years) were evaluated. A single canal with one foramen predominated in both first (85.7%) and second (99.5%) premolars, while complete or partial multi-canals accounted for 14.3% and 0.5% of first and second premolars, respectively. The prevalence of radicular grooves was significantly higher in first premolars (13.2%) than in second premolars (0.5%) and in males (4.3%, n = 119) than in females (2.5%, n = 73).

Conclusions: Although most premolars were complete single canals, the first premolars showed a relatively higher number of complex canals compared to the second premolar. In addition, radicular grooves in mandibular premolars were significantly more common in male patients.

Clinical relevance: When planning the endodontic treatment of mandibular premolars, clinicians should be aware of their morphologic complexity, especially in the first premolar of male patients.
Full Text
https://link.springer.com/article/10.1007/s00784-021-04313-9
DOI
10.1007/s00784-021-04313-9
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Oral and Maxillofacial Radiology (영상치의학교실) > 1. Journal Papers
Yonsei Authors
Lee, Chena(이채나) ORCID logo https://orcid.org/0000-0002-8943-4192
Jeon, Kug Jin(전국진) ORCID logo https://orcid.org/0000-0002-5862-2975
Choi, Yoon Joo(최윤주) ORCID logo https://orcid.org/0000-0001-9225-3889
Han, Sang Sun(한상선) ORCID logo https://orcid.org/0000-0003-1775-7862
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/188082
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