PMID: 18470429May 13, 2008Paper

The position and course of mandibular canal through mandibular ramus in patients with prognathism

Shanghai kou qiang yi xue = Shanghai journal of stomatology
Jia MaCong-xiao Song

Abstract

PUEPOSE: To investigate the position and course of mandibular canal through mandibular ramus in patients with prognathism using computed tomography, and to relate the findings to sagittal split ramus osteotomy, and also to describe the anatomical variability of mandibular canal in order to reduce injuries to the inferior alveolar nerve. The mandibles of 45 patients with skeletal Class III prognathism undergoing sagittal split ramus osteotomy were examined by spiral computed tomography. The region from a plane containing the lowest point of mandibular foramen(base plane 0) to 25 mm below it was measured with 5 mm distance every plane. The following parameters were measured: total thickness of mandible through the center of mandibular canal, thickness of buccal and lingular cortical plate, and narrowest portion of bone marrow space between the outer mandibular canal and both the buccal and lingular cortex. All measurements were analyzed with SPSS 13.0 software package. The thickness of mandible increased from the mandibular formen to mandibular body, there was no statistical difference among the sites with regards to the inner diameter of mandibular canal (F=1.044,P=0.391). The width of bone marrow space at the buccal side was si...Continue Reading

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