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KMID : 1004520110270030317
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Journal of Dental Rehabilitation and Applied Science
2011 Volume.27 No. 3 p.317 ~ p.326
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Morphological Analysis of the Mental Foramen and Anterior Loop of the Mandibular Canal using Computed Tomography
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Kim Yong-Gun
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Abstract
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The mental foramen and anterior loop of the mandibular canal are important landmarks for mandibular surgical procedures. The purpose of this study was to analyze the shape and position of the mental foramen and anterior loop of the mandibular canal on the computed tomography (CT) images, and apply the results clinically. CT images of 96 patients (33 male, 36 female, age range 17~43 years, mean years) were enrolled. The horizontal and vertical position of the mental foramen, as well as the distance from the root apices were measured. The distance of the anterior loop of the mandibular canal to the root apices, and the buccal angle were measured. The mental foramen was found mostly below the second premolar observed in 81 cases (46.0%), between the first and second premolars in 67 cases (38.0%), and between the second premolar and first molar in 19 cases (10.2%). The mean distance between the mental foramen and the lower border of the mandible was mm, the mean distance between the mental foramen and root apex was mm. The mean distance of the anterior loop of the mandibular canal was mm. The buccal angle measured at . The distance between the root apex and mental foramen measured as mm on panoramic radiography, and mm on CT. The mean distance between the mental foramen and mandibular canal was mm. When performing surgical procedures such as installing dental implants, it is important to minimize surgical trauma, especially the risk of damage to the mental nerve. To optimize the surgical outcome, a careful assessment of the shape and position of the mental foramen and the anterior loop of the mandibular canal must be made. CT images are useful for finding such anatomic structures.
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KEYWORD
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mental foramen, anterior loop of mandibular canal, computed tomography
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