INBDE (Integrated National Board Dental Examination) Practice Exam

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What osteotomy is used to move the mandible?

Sagittal split
LeFort I
Genioplasty
BSSO

The correct answer is: BSSO

A Sagittal split osteotomy (SSO) is used for mandibular advancement or setback, but not necessarily to move the mandible as a whole. B LeFort I osteotomy is used to move the maxilla and has no effect on the mandible. C Genioplasty is primarily used to alter the chin projection and shape, but may not significantly affect the position of the entire mandible. Therefore, the most appropriate osteotomy for specifically moving the mandible is a Bilateral Sagittal Split Osteotomy (BSSO). This is a surgical technique performed on the lower jaw (mandible) to move it forward, backward, upward or downward through the use of cuts (osteotomies) in the jawbone.