Showing papers in "Journal of The Korean Association of Oral and Maxillofacial Surgeons in 2001"

Cephalometric norms of the soft tissues of Korean for orthognathic surgery

Abstract: 악골 부조화를 가진 경우 치료방법으로 성장조절, 치아이동에 의한치성보상, 악교정수술에의한외과적처치등이있는데, 성 장조절을 통한 치료가 가장 이상적인 접근 방법이지만 악정형 치료는치료시기나효과면에서다소제한적이며치성보상에의 한 치아이동은 오히려 안모를 악화시킬 수 있으므로 성장이 끝 난 성인의 악골 부조화를 해결할 수 있는 가장 좋은 치료방법은 악교정 수술이며 이때의 이상적인 치료목표는 교정치료와 악교 정 수술을 병행하여 안정성을 확립하고 기능성 및 안모의 균형 을얻는것이다. 초기에는 하악에서만 수술이 가능하였으나 1970년대에는 구 강내에서시행하는상하악복합수술이보편화됨으로써거의모 든 형태의 치열안모 기형 환자를 치료할 수 있게 되었으며, 이런 환자를 진단하고 치료하는데 있어서 교정의와 외과의의 협진은 더욱중요하게되었다. 교정치료와함께악교정수술을시행하 는 경우 하안면부의 변화가 안모의 개선에 큰 영향을 미치기 때 악교정 수술을 위한 한국 성인 정상교합자의 경조직 기준치

악교정 수술을 위한 한국 성인 정상교합자의 경조직 기준치

Abstract: 【This study was performed to evaluate hard tissue cephalometric norms for Korean adults which can be implemented in surgical orthodontic treatment planning using selected horizontal reference plane especially for Koreans (Male: $SN-7.5^{\circ}$ , Female: $SN-9.0^{\circ}$ ) and a simplified analytical method. 70 males and 70 females consisting of freshmen of Yonsei University from 1996 to 1997 and students from the Dental College of Yonsei University were chosen according to clinical examination and cephalometric analysis. The samples had normal profiles, normal anteroposterior skeletal relationship(ANB angle of $0^{\circ}$ to $4^{\circ}$ and Wits appraisal of -4.0mm to 0mm), and Class I molar and canine relationship. They had no missing or supernumerary teeth and had no experience of orthodontic or prosthetic treatment. After the selection of 23 landmarks and the construction of horizontal and vertical reference lines, 22 skeletal and 12 dental measurements were taken. These consisted of vertical and horizontal linear measurements and angular measurements. The results were as follows. 1. Mean and standard deviation of the measurements were calculated for males and females. 2. Most of the skeletal vertical measurements, and maxillary and mandibular length were bigger in males than females. Whereas anterior facial height ratio(N-ANS/ANS-Me) as well as maxillary and mandibular antero-posterior position in relation to the vertical reference line(N-perpendicular) showed no signigicant difference between sexes. 3. Maxillary and mandibular dental antero-posterior position in relation to the vertical reference line(N-perpendicular) showed no significant difference between sexes. 4. The upper incisor show(U1-Stms) was $2.1{\pm}1.7mm$ in males and $3.3{\pm}1.7mm$ in females. In this study, hard tissue cephalometric norms of Korean adults for orthognathic surgery were obtained.】