Ambreen Afzal, SA Rouf Shah.
Accurate prediction of Lefort-I impaction: A comparative study.
J Coll Physicians Surg Pak Jan ;11(8):486-90.

Objective: To evaluate a more accurate method of prediction of Lefort-I maxillary impaction surgery. Design: An interventional study conducted prospectively. Place and Duration of Study: The subjects were treated at the Center for Dentofacial Deformities at the New York University College of Dentistry, U.S.A, during the period from 1994-1997. Subjects and Methods: Twenty patients with Lefort-I osteotomies with impaction were investigated. Two methods were used to simulate rotation of mandible. Method A was the standard method with center of rotation of mandible being center of condyle, while B was with the center of rotation of mandible being 14.9 mm below and 5.0 mm behind the superior mid surface of the condyle in sagittal view. Results: Out of eight variables evaluated, five came out significantly different while remaining three were not significant statistically. Conclusion: The position of lower central incisor could be predicted significantly different by both the methods of prediction. The position of the lower central incisor was more accurate in sagital plane when method B was used.

PakMediNet -Pakistan's largest Database of Pakistani Medical Journals - http://www.pakmedinet.com