Soft tissue changes in skeletal class II patients treated with bilateral sagittal split osteotomy advancement surgery.
10.5125/jkaoms.2010.36.2.94
- Author:
Hee Jin SHIN
1
;
Jin Wook KIM
;
Je Uk PARK
Author Information
1. Department of Oral and Maxillofacial Surgery, Seoul St. Mary's Dental Hospital, Seoul, Korea. jupark@catholic.ac.kr
- Publication Type:Original Article
- Keywords:
Mandibular advancement surgery;
Bilateral sagittal split ramus osteotomy (BSSRO);
Soft tissue changes
- MeSH:
Asian Continental Ancestry Group;
Chin;
Humans;
Incidence;
Lip;
Malocclusion;
Mandibular Advancement;
Osteotomy;
Osteotomy, Sagittal Split Ramus
- From:Journal of the Korean Association of Oral and Maxillofacial Surgeons
2010;36(2):94-99
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The purpose of this study was to examine the soft tissue changes in skeletal class II patients after mandibular advancement by bilateral sagittal split ramus osteotomy (BSSRO). In Asian population, the incidence of skeletal class II malocclusion is lower than that of skeletal class III malocclusion unlike the caucasians. This study was conducted to figure out the ratio at which hard tissue and soft tissue changes after mandibular advancement by analyzing cephalograms of 13 patients that have undergone the mandibular advancement surgery. As a result, change ratios of Li, B', Pog' according to the movement of li, B, Pog were found to be 0.59, 1.06, 0.82. Also, vertical height of vermilion zone (Si-Vb) and lower lip and chin (Si-Me') were measured to evaluate vertical changes. Vermilion zone showed tendency to decrease by 1.02 mm on the average postoperatively, whereas vertical length of lower lip and chin showed tendency to increase by 3.57 mm on the average.
