Abstract
Objectives
This study aimed to investigate the prevalence of a separate distolingual root and to measure the thickness of the buccal cortical bone in mandibular first molars in Koreans using cone-beam computed tomography (CBCT) images.
Materials and Methods
High-quality CBCT data from 432 patients were analyzed in this study. The prevalence of a separate distolingual root of the mandibular first molar was investigated. The distance from the distobuccal and distolingual root apices to the outer surface of the buccal cortical bone was measured. We also evaluated the thickness of the buccal cortical bone.
Results
The prevalence of a separate distolingual root (2 separate distal roots with 1 canal in each root; 2R2C) was 23.26%. In mandibular first molars with 2R2C, the distance from the distobuccal root apex to the outer surface of the buccal cortical bone was 5.51 mm. Furthermore, the distance from the distolingual root apex to the outer surface of the buccal cortical bone was 12.09 mm. In mandibular first molars with 2R2C morphology, the thickness of the buccal cortical bone at the distobuccal root apex of the mandibular first molar was 3.30 mm. The buccal cortical bone at the distobuccal root apex was significantly thicker in the right side (3.38 mm) than the left side (3.09 mm) (p < 0.05).
Conclusions
A separate distolingual root is not rare in mandibular first molars in the Korean population. Anatomic and morphologic knowledge of the mandibular first molar can be useful in treatment planning, including surgical endodontic treatment.
TY - JOUR
T1 - CBCT study of mandibular first molars with a distolingual root in Koreans.
AU - Kim,Hee-Ho,
AU - Jo,Hyoung-Hoon,
AU - Min,Jeong-Bum,
AU - Hwang,Ho-Keel,
Y1 - 2018/07/30/
PY - 2018/02/12/received
PY - 2018/04/09/accepted
PY - 2018/8/24/entrez
PY - 2018/8/24/pubmed
PY - 2018/8/24/medline
KW - Cone-beam computed tomography
KW - Cortical bone
KW - Korean
KW - Mandibular
KW - Root
SP - e33
EP - e33
JF - Restorative dentistry & endodontics
JO - Restor Dent Endod
VL - 43
IS - 3
N2 - Objectives: This study aimed to investigate the prevalence of a separate distolingual root and to measure the thickness of the buccal cortical bone in mandibular first molars in Koreans using cone-beam computed tomography (CBCT) images. Materials and Methods: High-quality CBCT data from 432 patients were analyzed in this study. The prevalence of a separate distolingual root of the mandibular first molar was investigated. The distance from the distobuccal and distolingual root apices to the outer surface of the buccal cortical bone was measured. We also evaluated the thickness of the buccal cortical bone. Results: The prevalence of a separate distolingual root (2 separate distal roots with 1 canal in each root; 2R2C) was 23.26%. In mandibular first molars with 2R2C, the distance from the distobuccal root apex to the outer surface of the buccal cortical bone was 5.51 mm. Furthermore, the distance from the distolingual root apex to the outer surface of the buccal cortical bone was 12.09 mm. In mandibular first molars with 2R2C morphology, the thickness of the buccal cortical bone at the distobuccal root apex of the mandibular first molar was 3.30 mm. The buccal cortical bone at the distobuccal root apex was significantly thicker in the right side (3.38 mm) than the left side (3.09 mm) (p < 0.05). Conclusions: A separate distolingual root is not rare in mandibular first molars in the Korean population. Anatomic and morphologic knowledge of the mandibular first molar can be useful in treatment planning, including surgical endodontic treatment.
SN - 2234-7658
UR - https://www.unboundmedicine.com/medline/citation/30135852/CBCT_study_of_mandibular_first_molars_with_a_distolingual_root_in_Koreans_
L2 - https://rde.ac/DOIx.php?id=10.5395/rde.2018.43.e33
DB - PRIME
DP - Unbound Medicine
ER -