Morphological study of distal furcation in mandibular first molars based on cone beam computed tomography images in Beijing population
10.7518/hxkq.2024.2023348
- VernacularTitle:北京地区人群下颌第一磨牙远中根分叉形态的锥形束CT研究
- Author:
Jie ZHU
1
;
Ya LIU
Author Information
1. 北京大学国际医院口腔科,北京 102206
- Keywords:
mandibular first molar;
distal furcation;
cone beam computed tomography
- From:
West China Journal of Stomatology
2024;42(3):329-333
- CountryChina
- Language:Chinese
-
Abstract:
Objective This retrospective study explored the incidence of independent distal-lingual root(DLR)in mandibular first molars and the morphologic features of distal furcations through cone beam computed tomography(CBCT)in Beijing population.Methods A total of 401 CBCT images of both mandibular first molars existed were in-cluded.The sex of the patients,the incidence of DLR,the distal root trunk length(DRT),the locations of distal furcation entrance(DFE),and the separation angle of distal furcation(ADF)were recorded.Results The incidence rates of DLR were 33.2%on the subject level and 26.8%on the tooth level.The incidence of DLR was not different between genders but was higher on the right sides.The DRT values were 4.15 mm±1.02 mm.The ADF was 65.56°±11.56°.The DFE was located lingually,and 97.2%DFE was located more apically than buccal/lingual furcations.Conclusion A high inci-dence of DLR was found in the Beijing population.The DRT was longer than buccal and lingual sites.The DFE was lo-cated lingually with a wide separation.Understanding the morphological features of distal furcation can help clinicians to make proper treatment plans.
