[논문]청소년 및 성인 환자에서 II급 부정교합 치료시 연조직 변화에 관한 비교

장나영; 조진형; 이유미; 강경화

청소년 및 성인 환자에서 II급 부정교합 치료시 연조직 변화에 관한 비교
Comparison of Soft Tissue Changes between Adolescents and Adults in Class II Malocclusion Treatment 원문보기

대한구강내과학회지 = Korean journal of oral medicine, v.34 no.3 = no.76, 2009년, pp.277 - 294

장나영 (원광대학교 치과대학 치과교정학교실) , 조진형 (원광대학교 치과대학 치과교정학교실) , 이유미 (원광대학교 치과대학 구강내과학 교실) , 강경화 (원광대학교 치과대학 치과교정학교실)

초록
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본 연구의 목적은 II급 청소년, 성인 환자에서 발치와 비발치 후 연조직 변화를 비교하기 위한 것이었다. 원광대학교 치과병원 교정과에 내원한 환자 68명을 각각 청소년발치군, 청소년비발치군, 성인발치군, 성인비발치군으로 분류하여 치료 전후의 측모 두부방사선사진을 계측하였다. 각 군의 치료 전후를 비교하고 각 군 간의 변화량을 비교하였으며, 그 중 통계적으로 유의한 변수들의 상관성과 회귀분석을 하여 다음과 같은 결과를 얻었다. 청소년과 성인의 발치군에서 비순각은 유의하게 증가하였고 비발치군에서는 유의하게 감소하였다. 발치군에서는 vertical-U1과 E line-upper lip의 변화량 간에, vertical-U1과 E line-lower lip의 변화량 간에, vertical-L1과 vertical-Li의 변화량 간에 양의 상관관계를 보였다. 또한 발치군에서 회귀분석을 통해 E line-upper lip, E line-lower lip, Li에 대한 단순회귀방정식이 도출되었다.

Abstract ▼ AI-Helper

The purpose of this study was to evaluate the soft tissue changes of class II adolescents and adults in respect to extraction or nonextraction. The study included 68 patients from Wonkwang Dental Hospital were categorized to adolescent extraction group, adolescent nonextraction group, adult extraction group, adult nonextraction group. Cephalometric tracing of each patient was done to compare pretreatment and posttreatment of each group, to compare the changes between groups. And among the variables that showed significancy, correlation analysis and simple linear regression were done. The results were as follows. 1. In both adolescents and adults after extraction treatment, nasolabial angle significantly increased and in both subjects after non extraction treatment, nasolabial angle significantly decreased. 2. In extraction subjects, there were positive correlation between the amount of treatment changes of vertical-U1 and E line-upper lip, the changes of vertical-L1 and E line-lower lip, the changes of vertical-L1 and vertical-Li. 3. In extraction subjects, simple regression equations of E line-upper lip, E line-lower lip, Li were calculated by regression analysis. According to the results above, it could be considered that the effect of the extraction or nonextraction treatment was greater than the effect of growth.

주제어

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문제 정의

Thus, the aim of this study is to investigate the difference of soft tissue changes after extraction or nonextraction, between adolescent and adult female class II patients.

제안 방법

The purpose of this study was to evaluate the soft tissue changes of class II adolescents and adults in respect to extraction or nonextraction.
The study included 68 patients from Wonkwang Dental Hospital were categorized to adolescent extraction group, adolescent nonextraction group, adult extraction group, adult nonextraction group. Cephalometric tracing of each patient was done to compare pretreatment and posttreatment of each group, to compare the changes between groups.

대상 데이터

19 female adults were treated with extraction of the first premolar on each quadrant of the dentition. 16 female adults were treated with nonextraction(Table 1).
20 female adolescents were treated with nonextraction. 19 female adults were treated with extraction of the first premolar on each quadrant of the dentition. 16 female adults were treated with nonextraction(Table 1).
Samples were retrospectively selected from the files of the Department of Orthodontics at Wonkwang Dental Hospital in South Korea. Selected samples were classified into 4 groups; 13 female adolescents were treated with extraction of the first premolar on each quadrant of the dentition. 20 female adolescents were treated with nonextraction.

데이터처리

1, Table 2). Tracings and locations of dentoskeletal landmarks were marked and measurements was done by 1 investigator(N.Y.C.) using the V-ceph^Ⓡ program (Version 5.3, Cybermed, South Korea). Linear and angular measurements that was used is shown at Fig.

이론/모형

The Shapiro-Wilk test was applied to verify the normal distribution of the variables. Paired t-tests were used to compare the pretreatment and posttreatment stages in each group.

성능/효과

1. In both adolescents and adults after extraction treatment, nasolabial angle significantly increased and in both subjects after non extraction treatment, nasolabial angle significantly decreased.
2. In extraction subjects, there were positive correlation between the amount of treatment changes of vertical-U1 and E line-upper lip, the changes of vertical-L1 and E line-lower lip, the changes of vertical-L1 and vertical-Li.
Table 9 shows the result of the comparison of the amount of treatment changes(T1-T2) between the extraction group and the nonextraction group. The changes of vertical-U1, vertical-L1, U1 to Apog, L1 to Apog, U1 to FP, L1 to FP, IMPA, interincisal angle, nasolabial angle, E line-upper lip, E line-lower lip, vertical-Sn, vertical-Ls were statistically significant.
Table 10 shows the result of the comparison of the amount of treatment changes(T1-T2) between the extraction group and the nonextraction group. The changes of vertical-U1, vertical-L1, vertical-Is, U1 to Apog, L1 to Apog, U1 to FP, L1 to FP, IMPA, interincisal angle, nasolabial angle, E line-upper lip, E line-lower lip, vertical-Li were statistically significant.

후속연구

Further study must be conducted with more samples considering other possible influencing factors such as sex, lip thickness, vertical position changes of the incisor, retraction of the upper dentition, etc between adolescents and adults. These factors can have a great effect on the results of treatment.

참고문헌 (31)

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저자의 다른 논문 :

표제어: PCR

동의어: Packet Collision Rate

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용어 설명: PCR은 세균 특이성이 있는 primer를 이용하여 적은 수의 세균이 있을지라도 쉽게 검출할 수 있는 유용한 방법이며, 이를 이용하여 구강 내 치면세균막이나 타액에서 직접 세균을 검출할 수 있게 되었다[8].

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