The 3D location of 100 cases of normal mandibular canals
10.3969/j.issn.1001-3733.2010.02.021
- VernacularTitle:100例正常人下颌管的三维测量
- Author:
Bei WANG
;
Hongbo FANG
;
Bing XU
;
Jun SHI
- Publication Type:Journal Article
- Keywords:
Mandibular canal;
Molar;
Distance
- From:
Journal of Practical Stomatology
2010;26(2):223-226
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To identify the normal position of the root tips of lower premolars, first and second molars, the distances through 3-D reconstruction in 100 cases of general population were measured. Methods: The three distances were measured from 100 cases over 17 years old, divided by gender: 1. The distance of Mandible of the Centre (M) under the jaw to the lower edge of the next point (L);2. The distance of Mandible of the Centre (M) and M points to the horizon at the same point of the buccal (O);3. The distance of Mandible of the Centre (M) and M to the point in the same horizontal line at the side of the tongue(I). Results: The second premolar root tip of the jaw bone under the margin of the thick wall, the wall thickness of tongue in cheek bone lateral side of the wall in the first and second molars, the lower edge of the mandible bone wall, the tongue side of the wall, cheek bone side walls were thicker through 3-D reconstruction measurement than in normal way.Cheek bone was much thicker than the tongue side of the wall. Conclusion: The way of identifying the normal lower in the second premolar and the first and second molar root tip through the three distances by 3-D reconstruction will give us lots of help, such as: Orthognathic operation of the mandible sagittal split SSRO, scaling of cysts, planting of a certain theoretical basis for scientific research and teaching to provide a realistic and practical method.
