Morphology of the inferior border of the mandible: correct relation between the lowest position of the outer and inner contours of the cortex for a successful split

Abstract For a sagittal split ramus osteotomy to be secure, the relation between the outer and inner contours of the cortex at the inferior border of the mandible is critical. The lowest point of the outer contour is not always immediately below that of the inner contour, and the former is placed mo...

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Bibliographic Details
Published in:British journal of oral & maxillofacial surgery 2017-06, Vol.55 (5), p.540-541
Main Authors: Matsushita, K, Donen, M, Harata, S, Nagamine, K, Tei, K
Format: Article
Language:English
Subjects:
Adolescent
Adult
Anatomic Landmarks
Dentistry
Female
Humans
inferior border
Male
Malocclusion - diagnostic imaging
Malocclusion - surgery
Mandible - anatomy & histology
Mandible - diagnostic imaging
Mandible - surgery
Mandibular Osteotomy - methods
Middle Aged
Osteotomy, Sagittal Split Ramus - methods
ramus osteotomy
Surgery
Tomography, X-Ray Computed
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Description
Summary:Abstract For a sagittal split ramus osteotomy to be secure, the relation between the outer and inner contours of the cortex at the inferior border of the mandible is critical. The lowest point of the outer contour is not always immediately below that of the inner contour, and the former is placed more lingually than the latter in about a third of all cases. This tendency is much more noticeable in skeletal class I and II malocclusions than class III. It is therefore important to examine the lowest point of the inferior border in every case, and to carry the inferior part of the buccal cut on to the lingual side if necessary.
ISSN:0266-4356
1532-1940
DOI:10.1016/j.bjoms.2017.03.012