How do Mandibular Osteotomies with and without Le Fort I osteotomy affect the Mentolabial Groove from the frontal view?

Authors : Muazzez SUZEN, Emrah DİLAVER, Abdullah ÖZEL, Sina UÇKAN

Pages : 84-88

Doi:10.15311/selcukdentj.1192760

View : 16 | Download : 12

Publication Date : 2023-04-27

Article Type : Research Paper

Abstract :Purpose: The aim of this study was to determine how the mentolabial groove at the frontal view is affected by orthognathic surgery. Materials & Methods: Sixty-two patients were appointed into two groups insert ignore into journalissuearticles values(Group 1: Class II skeletal deformity, Group 2: Class III skeletal deformity);. In each patient, pre and postoperative standardized sixth-month photos insert ignore into journalissuearticles values(lateral and frontal view); were obtained in natural head position to investigate mentolabial groove length insert ignore into journalissuearticles values(MGL);, mentolabial groove depth insert ignore into journalissuearticles values(MGD);, mentolabial groove angle insert ignore into journalissuearticles values(MGA); and mentolabial angle insert ignore into journalissuearticles values(MLA);. Results: Out of the 62 patients, 41 had Class III skeletal deformity insert ignore into journalissuearticles values(66.2%); and 21 Class II skeletal deformity insert ignore into journalissuearticles values(33.8%);. In Group 1, the average ratio of MGL decreased significantly from 0.59±0.14 to 0.45±0.09 insert ignore into journalissuearticles values(p<0.001);. Contrary to Group 1, the ratio of MGL increased significantly from 0.41±0.11 to 0.50±0.13 in Group 2 insert ignore into journalissuearticles values(p=0.001);. There was a negative correlation between MGA and MGL insert ignore into journalissuearticles values(p=0.001, r=-0.439);. MGD positively correlated with MGL insert ignore into journalissuearticles values(p<0.001, r=0.499);. Conclusion: After orthognathic surgery, the mentolabial groove decreases in class II patients and increases in class III patients. Orthognathic surgery significantly affects mentolabial anatomy and therefore should be planned carefully to obtain an aesthetic appearance in the mentolabial region.
Keywords : mentolabial groove, orthognathic surgery, frontal view