The purpose of this study was to quantify anteroposterior facial soft tissue changes with respect to underlying skeletal movements after Le Fort I maxillary advancement surgery by using lateral cephalograms taken before and after the operation.
Materials and Methods
The study group consisted of 20 patients (10 women, 10 men; mean age 23.4 ±1.4 years) having a Class III skeletal deformity caused by a retrognathic maxilla. All patients were treated by Le Fort I maxillary advancement osteotomy. Lateral cephalograms were taken before and 1.6 ± 0.4 years after surgery.
Results
The anteroposterior position of A-point and anteroposterior position of maxillary incisor were significantly protracted (–2.69 ± 3.34 and 2.68 ± 3.21, respectively; P < .01). The nasal anteroposterior and superoinferior positions (NASALAP and NASALSI, respectively) were significantly changed (–2.70 ± 6.81, P < .01, and 2.55 ± 5.80, P < .05, respectively) and nasal elevation and protraction were observed after Le Fort I maxillary advancement surgery.
Conclusions
The changes in anteroposterior and superoinferior positions of A-point were correlated with the nasal superoinferior position (r = −0.71, P < .05; r = 0.72, P < .05) after Le Fort I maxillary advancement surgery.
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