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Orthognathic Surgery

This document discusses various orthodontic and orthognathic surgery procedures. It describes common maxillary procedures like segmental procedures and Lefort 1 osteotomies to move segments of the upper jaw. Mandibular procedures discussed include vertical subsigmoid osteotomies, sagittal split osteotomies, body osteotomies, and genioplasties to move or advance segments of the lower jaw. Complications of some procedures like damage to the inferior alveolar nerve during sagittal split osteotomies are also noted. The document provides an overview of surgical options for correcting dental malocclusions or skeletal discrepancies.

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Haider Timimi
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466 views16 pages

Orthognathic Surgery

This document discusses various orthodontic and orthognathic surgery procedures. It describes common maxillary procedures like segmental procedures and Lefort 1 osteotomies to move segments of the upper jaw. Mandibular procedures discussed include vertical subsigmoid osteotomies, sagittal split osteotomies, body osteotomies, and genioplasties to move or advance segments of the lower jaw. Complications of some procedures like damage to the inferior alveolar nerve during sagittal split osteotomies are also noted. The document provides an overview of surgical options for correcting dental malocclusions or skeletal discrepancies.

Uploaded by

Haider Timimi
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Orthodontic and Orthognathic Surgery

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planning
Study Models (mounting on articulator)

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Photographs Extra-oral and intra-oral views

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Negative patient profile fitting the ceph. bony & soft tissue to determine the effect of surgical options 3

Common Surgical Procedures:

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Maxillary Procedures
1.

Segmental procedures One or more teeth and their supporting bone can be moved as a segment. Either distally to reduce increased overjet Or upwards to reduce excessive upper incisor 11/12/2007 show

Wassmund technique Involve movement of the upper premaxillary segment of incisors and canines as block.

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Maxillary Procedures
Horseshoe incision of the buccal mucosa and underlying bone The maxilla can be moved upward downward forward

Lefort 1 (most widely used technique)

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Common Surgical Procedures


Lefort II Achieve mid-face advancement Lefort III Management of craniofacial anomalies

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Mandibular Procedures
Vertical subsigmoid osteotomy:
Used for mand. prognathism Bone cut from sigmoid notch to lower border

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Mandibular Procedures
Sagittal split Osteotomy :
Used to advance OR push back the mandible OR to correct asymmetry Bone cut extends obliquely from above the lingula across the retromolar region, vertically down the buccal plate to the lower border
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Sagittal split Osteotomy (CON,T)


The main complication is damage to the inferior alveolar nerve

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Mandibular Procedures
Body osteotomy Used in patient with mand. Prognathism, if there is a natural gap in the lower arch

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Subapical osteotomy
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Genioplasty
To move the tip of chin in any direction Sliding bony contact and the muscle pedicle Used as masking procedure to avoid complex treatment
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Genioplasty

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