Bifid variations of the mandibular canal: cone beam computed tomography evaluation of 1000 Northern Chinese patients
| Autor: | Yuan Meng, Ya-Qiong Zhang, Ya-Ning Zhao, Deng-gao Liu, Xu-chen Ma |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Adult
Male 0301 basic medicine China Cone beam computed tomography Adolescent Population Molar relationship Mandibular canal Proprietary software Mandible Pathology and Forensic Medicine 03 medical and health sciences 0302 clinical medicine Statistical analyses Humans Medicine Radiology Nuclear Medicine and imaging Dentistry (miscellaneous) In patient education Mean diameter Orthodontics education.field_of_study business.industry Anatomic Variation 030206 dentistry Cone-Beam Computed Tomography Middle Aged medicine.anatomical_structure Radiographic Image Interpretation Computer-Assisted Female Surgery 030101 anatomy & morphology Oral Surgery business |
| Zdroj: | Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology. 126:e271-e278 |
| ISSN: | 2212-4403 |
| DOI: | 10.1016/j.oooo.2018.06.008 |
| Popis: | Objectives The aim of this study was to evaluate and quantify variations of bifid mandibular canals (BMCs) in a population of Northern China by using cone beam computed tomography (CBCT). Study Design CBCT images of 1000 consecutive patients were analyzed by using the NewTom proprietary software. BMCs were identified and classified on the basis of the Naitoh classification. Linear and angular measurements of BMCs were performed. Statistical analyses were conducted by using χ2 and Wilcoxon tests. Results BMCs were observed in 13.2% of 1000 patients and 8.4% of 2000 sides. The prevalence of BMCs was significantly lower in patients in the first 2 decades and in cases with a class II molar relationship. The retromolar canal (68.4%) was the most common type of BMC observed. No buccolingual canals were identified; however, 2 special canals were detected. A classification system of 3 subtypes of retromolar canals was suggested. On average, the beginning site of the branches from the opening of the main canal was at a distance of 8.1 mm. The mean diameter and length of BMCs were 2.1 mm and 12.6 mm, respectively. Conclusions This study underlined the prevalence and characteristics of BMCs in a population of Northern China. Preoperative identification of BMCs with CBCT may help prevent postoperative complications. |
| Databáze: | OpenAIRE |
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