The Radiological Evaluation of Mandibular Canal Related Variables in Mandibular Third Molar Region: a Retrospective Multicenter Study

eJournal of Oral Maxillofacial Research

article

Dogukan Yilmaz¹  Emel Tuğba Ataman-Duruel²  Zehra Beycioğlu²  Samir Goyushov³  Tansu Çimen⁴  Onurcem Duruel⁵  Tolga Fikret Tözüm⁶ 

[1] Department of Periodontology, Faculty of Dentistry, Sakarya University;Department of Periodontology, Faculty of Dentistry, Hacettepe University;Department of Periodontology, Faculty of Dentistry, Istanbul Aydin University;Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Alanya Alaaddin Keykubat University;Private Practice;Department of Periodontology, College of Dentistry, University of Illinois at Chicago

关键词: mandible;    radiology;    surgery;    tomography.;   

DOI  :  10.5037/jomr.2022.13302

学科分类：社会科学、人文和艺术（综合）

来源: Stilus Optimus

【 摘 要 】

Objectives: The aim of this retrospective study was to investigate anatomical structure of mandibular canal and the factors those increase the possibility of inferior alveolar nerve damage in mandibular third molar region of Turkish population. Material and Methods: Overall 320 participants with 436 mandibular third molars were included from four different study centers. Following variables were measured: type and depth of third molar impaction, position of mandibular canal in relation to third molars, morphology of mandibular canal, cortication status of mandibular canal, possible contact between the third molars and mandibular canal, thickness and density of superior, buccal, and lingual mandibular canal wall, bucco-lingual and apico-coronal mandibular canal diameters on cone-beam computed tomography scans. Results: Lingual mandibular canal wall density and thickness were decreased significantly as the impaction depth of mandibular third molar was increased (P = 0.045, P = 0.001 respectively). Highest buccal mandibular canal wall density and thickness were observed in lingual position of mandibular canal in relation to mandibular third molar (P = 0.021, P = 0.034 respectively). Mandibular canal with oval/round morphology had higher apico-coronal diameter in comparison to tear drop and dumbbell morphologies (P = 0.018). Additionally, mandibular canals with observed cortication border and no contact with mandibular third molar had denser and thicker lingual mandibular canal wall (P = 0.003, P = 0.001 respectively). Conclusions: Buccal and lingual mandibular canal wall density, thickness and mandibular canal diameter may be related with high-risk indicators of inferior alveolar nerve injury.

【 授权许可】

CC BY-NC-ND