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Evaluation of Relapse according to Set-back Degree of the Mandible at Bilateral Sagittal Split Ramus Osteotomy in Mandibular Prognathism Patients
Journal of the Korean Association of Maxillofacial Plastic and Reconstructive Surgeons ; : 319-322, 2011.
Article in Korean | WPRIM | ID: wpr-785085
ABSTRACT
PURPOSE: The purpose of this study was to examine the appropriate degree of set-back of the mandible by evaluating the rate of relapse after surgery.

METHODS:

Among the patients who visited our hospital from January 2002 to January 2007 and who underwent orthognathic surgery, of the patients available for follow-up observation, the rate of relapse after surgery was investigated according to the set-back degree. The patients were divided into groups by the degree of set-back, and relapse was evaluated by the radiographs performed the day after surgery, 6 months after surgery, 1 year after surgery, 2 years after surgery and 3 years after surgery.

RESULTS:

In cases that exceeded the limit of posterior movement of the mandible (13 mm) or that had the wrong position of the condyle, a greater tendency toward relapse was shown.

CONCLUSION:

Based on the results of this study, among the cases that required a large amount of posterior movement of the mandible, two jaw surgeries accompanied by bilateral sagittal split ramus osteotomy (BSSRO) and LeFort I osteotomy are recommended.
Subject(s)

Full text: Available Index: WPRIM (Western Pacific) Main subject: Osteotomy / Prognathism / Recurrence / Follow-Up Studies / Orthognathic Surgery / Osteotomy, Sagittal Split Ramus / Mandible Type of study: Observational study / Prognostic study Limits: Humans Language: Korean Journal: Journal of the Korean Association of Maxillofacial Plastic and Reconstructive Surgeons Year: 2011 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Osteotomy / Prognathism / Recurrence / Follow-Up Studies / Orthognathic Surgery / Osteotomy, Sagittal Split Ramus / Mandible Type of study: Observational study / Prognostic study Limits: Humans Language: Korean Journal: Journal of the Korean Association of Maxillofacial Plastic and Reconstructive Surgeons Year: 2011 Type: Article