CAJ | 학술논문

目的通过观察前方牵引矫治18～24岁骨性反(牙合)患者的疗效,探讨前方牵引矫治的机制.方法选择15例骨性Ⅲ类错(牙合)成年患者,年龄18～24岁(平均19.2岁),通过上下颌活动和固定矫治器的合理配置,利用晚间上颌前方牵引联合白天Ⅲ类颌间牵引进行矫治,前方牵引疗程约7个月,总疗程约24个月.头影测量分析治疗前后头颅侧位X线片.结果经过治疗15例患者外形侧貌及咬合关系基本正常.SNA角、SNB角、ANB角由治疗前的(79.6±3.7)°、(83.5±3.3)°、(-4.1±2.0)°变为(81.1±3.8)°、(82.6±3.6)°、(-1.5±1.8)°,矫治前后相比,差异有统计学意义(P＜0.01).结论上下颌活动和固定矫治器的合理配置能连续实施上颌骨矫形作用,为临床矫治18～24岁骨性Ⅲ类反(牙合)提供了新思路.
목적 통과관찰전방견인교치18～24세골성반(아합)환자적료효,탐토전방견인교치적궤제.방법 선택15례골성Ⅲ류착(아합)성년환자,년령18～24세(평균19.2세),통과상하합활동화고정교치기적합리배치,이용만간상합전방견인연합백천Ⅲ류합간견인진행교치,전방견인료정약7개월,총료정약24개월.두영측량분석치료전후두로측위X선편.결과 경과치료15례환자외형측모급교합관계기본정상.SNA각、SNB각、ANB각유치료전적(79.6±3.7)°、(83.5±3.3)°、(-4.1±2.0)°변위(81.1±3.8)°、(82.6±3.6)°、(-1.5±1.8)°,교치전후상비,차이유통계학의의(P＜0.01).결론 상하합활동화고정교치기적합리배치능련속실시상합골교형작용,위림상교치18～24세골성Ⅲ류반(아합)제공료신사로.
Objective To investigate the clinical effects of facemask protractiong on skeletal Class Ⅲ adult patients. Methods Totally 15 skeletal Class Ⅲ patients (male 7, female 8, aged 18-24 years)were included in the study. Removable and fixed appliances were used in the upper or lower arches.Facemask protraction was used at night for about 7 months and Class Ⅲ elastics were worn during the day.The total treatment time was 24 mouths on average. Cephalometric analysis was carried out before and after treatment. Results The profile was greatly improved and Class Ⅰ molar relationship was achieved. SNA angle was increased from (79.6 ±3.7)° to (81.1 ±3. 8)°. SNB angle was decreased from (83. 5 ±3. 3)°to (82. 6 ± 3.6 ) °. ANB angle was increased from ( - 4. 1 ± 2. 0 ) ° to ( - 1.5 ± 1.8 ) °. Conclusions Protraction was effective in the treatment of skeletal Class Ⅲ adult patients.