Analysis of Related Factors Affecting the Thickness of Mesiobuccal Root Canal Wall of Mandibular First Molars Using CBCT

doi:10.13701/j.cnki.kqyxyj.2022.08.016

Abstract

Abstract: Objective: To find the symmetry and the association of thicknesses of mesiobuccal root canal wall of mandibular first molars with age, gender, and distance from furcation using CBCT. Methods: The wall thicknesses of the mesiobuccal canal of mandibular first molars from different furcation levels were measured and analyzed in 200 patients. Results: There were no significant differences in the mesiobuccal canal wall thicknesses between bilateral mandibular first molars (P>0.05). The wall thicknesses increased with age, and only the distal wall had statistical differences (P<0.05). The buccal and mesial wall thicknesses between male and female had no statistical differences (P>0.05), and the walls were thinner with the distance from the furcation. However, the thinnest distal wall located 3 mm below the furcation with significant differences between (0.77±0.10) mm in men and (0.76±0.07) mm in women. Conclusion: The thicknesses of the mesiobuccal root canal wall for bilateral mandibular first molars were symmetrical. The age-related and gender differences were more obvious in distal danger zone. The wall was the thinnest in the distal direction at 3mm below the furcation. This suggests that for young female patients, excessive distal dentin removing should be avoided to prevent perforation

Key words: mandibular first molar, thickness of root canal wall, cone-beam computed tomography, root canal preparation, age-related changes

SHAN Shan, ZHANG Wenxin, GE Jiuyu, LIU Shu, WANG Tiemei. Analysis of Related Factors Affecting the Thickness of Mesiobuccal Root Canal Wall of Mandibular First Molars Using CBCT[J]. Journal of Oral Science Research, 2022, 38(8): 779-783.

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