J Korean Assoc Maxillofac Plast Reconstr Surg.
2009 Nov;31(6):510-518.
Study on the Anatomical Position of Mandibular Canal Using Computed Tomography in Mandibular Prognathism Patients
- Affiliations
-
- 1Department of Oral&Maxillofacial Surgery, Daegu Fatima Hospital, Daegu, Korea. sungred1@hanmir.com
- 2Department of Oral&Maxillofacial Surgery, Dongguk University Gyeongju Hospital, Korea.
- 3Department of Oral&Maxillofacial surgery, School of Dentistry, Kyungpook National University, Korea.
Abstract
- PURPOSE
In this study, we analyzed and compared the anatomical position of the mandibular canal in normal occlusion and mandibular prognathism patients.
Patients and Methods
Computed tomography image from 58 patients were divided into normal occlusion group and mandibular prognathism group, and each measurement were taken in the each measuring points(2nd premolar, 1st molar, 2nd molar, 3rd molar, ramus). Measurements were statistically analyzed by student's t-test.
RESULTS
BC (Thickness of the buccal cortex) value was 2.3~2.7 mm, CB (Distance from the canal to the lingual aspect of the buccal cortex) value was 1.3~4.3 mm, MC (Diameter of the canal) value was 3.2~3.8 mm, LI (Distance from the canal to the lingual aspect of the lingual cortex) value was 2.0~3.7 mm, TM (Thickness of the total mandible) value was 9.5~12.9 mm and CM (Distance from the canal to the inferior border of the mandible) value was 6.9~17.5 mm.
CONCLUSION
In the comparison between two groups, there was statistically significant difference in CB value of 2nd, 3rd molar between normal occlusion and mandibular prognathism, and other value in the rest of the measuring points didn't show statistically significant difference.
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