Study of soft tissue changes in the upper lip and nose after backward movement of the maxilla in orthognathic surgery

Objectives: This study evaluates soft tissue changes of the upper lip and nose after maxillary setback with orthognathic surgery such as Le Fort I or anterior segmental osteotomy. Materials and Methods: All 50 patients with bimaxillary protrusion and skeletal Class II malocclusion underwent Le Fort...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the Korean Association of Oral and Maxillofacial Surgeons 2020-12, Vol.46 (6), p.385-392
Main Authors: Seon, Suyun, Lee, Hyun-Woo, Jeong, Bong-Jin, Lee, Baek-Soo, Kwon, Yong-Dae, Ohe, Joo-Young
Format: Article
Language:Korean
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Objectives: This study evaluates soft tissue changes of the upper lip and nose after maxillary setback with orthognathic surgery such as Le Fort I or anterior segmental osteotomy. Materials and Methods: All 50 patients with bimaxillary protrusion and skeletal Class II malocclusion underwent Le Fort I or anterior segmental osteotomy with backward movement. Soft and hard tissue changes were analyzed using cephalograms collected preoperatively and 6 months postoperatively. Results: Cluster analysis on the ratios shows that 2 lines intersected at 4 mm point. Based on this point, we divided the subjects into 2 groups: Group A (less than 4 mm, 27 subjects) and Group B (more than 4 mm, 23 subjects). Also, each group was divided according to changes of upper incisor angle (≥4°=A1, B1 or
ISSN:2234-7550
2234-5930