The Evaluation of Limit of Superior Repositioning of Maxilla in Le Fort I Osteotomy: A 3D Study Part I by Nesrin Saruhan in Modern Approaches in Dentistry and Oral Health Care in Lupine Publishers
Abstract
In Le Fort I osteotomies that require superior repositioning of the
maxilla, surgeons are confronted with different anatomical problem. The
surgeon should consider the condition of the infraorbital foramen and
apex of maxillary teeth to determine the best bone resection route. The
purpose of this study was to evaluate the limit of superior
repositioning of the maxilla in Le Fort I osteotomy by measuring the
distance between the apex of the maxillary teeth with the plane between
the bilateral infraorbital nerve and the porion. Our study was performed
on 74 segments of 37 patients between the ages of 18 and 25 years
(19.21 ± 1.87; mean ± SD). Of these, 50 were male (67.6%) and 24 were
female (32.4%). The mean distance of the between infraorbital foramen
plane and the teeth was 16.95 ± 3.87mm for canines, 20.64 ± 3.69 mm for
first premolars, 20.53 ± 4.05 mm for second premolars, 20.26 ± 3.56 for
first molars, and 19.79 ± 3.62mm for second molars when genders were
evaluated there was no statistically significant difference between
canine teeth distance (p > 0.005), but there was a statistically
significant difference between premolars and molars (p < 0.005). When
the length of the plane distance were evaluated by the right or left
region, there was no difference between the canine, premolar or molar
teeth (p>0.005). According to our results, the vertical height of the
infraorbital foramen is a convenient landmark in superior repositioning
of the maxilla with Le Fort I osteotomy.
