비발치로 치료한 제1급 부정교합자의 재귀현상에 관한 연구

• 영문명: Relapse and stability : an ebaluation of Class I malocclusion nonextraction therapy
• 발행기관: 대한치과교정학회
• 저자명: 김구순(Gu-Soon Kim) 이기수(Ki-Soo Lee)
• 간행물 정보: 『The Korean Journal of Orthodontics』제27권 제1호, 79~89쪽, 전체 11쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 1997.02.28

국문 초록

이 연구는 제1급 총생치 부정교합자를 비발치로 치료한 후, 교정치료개시기에서부터 보정완료 후까지 장기가의 변화를 관찰하여 치열의 양적 변화와 그경향을 이해하기 위하여 싱행되었다. 연구자료는 26명에 대한 교정치료 개시, 교정치료 직후 빛 보정종료까지의 일련의 석고모형과 두부엑스선 규격사진이었으며, 이들을 계측하고 분선하여 다음의 결과와 결론을 얻었ㄷ. 1. 수직부피개의 재귀량은 치료량과 상관성이 있었다. 2. 상악견치간 폭경은 치료직후 확대된 증례에서는 안전성이 있었으나 감소된 증례에서는 재귀율이 컸다. 3. 하악견치간폭경은 치료직후 확대 축소에 관계없이 재귀율이 높았다. 4. 상하악 전치는 치료직후 순측경사를 보였고, 보정기간도안에 안정성이 있었다. 6. 비발치 증례의 보정은 하악 견치간 포경의 유지에 유의하여야하며, 하악치열궁의 확대는 해당악골의 생리적한 계내에서 이루어져야 할것으로 생각된다.

영문 초록

One of the strenuous problems in orthodontic procedures is postretention stability and retention against relapse. Many investigative trial had been done to disclose the factors associated with relapse and effective prescription to stave off, however, the nature of these jeopardies remained obscure. The objective was to investigate the long-term stability and quantitative changes of dental arches subsequently after Class I nonextraction treatment Study models,cephalometric headfilms of 26 samples which were taken before, after teatment and postretention were employed to measure the interdental width of corresponding buccal teeth,overbite,overjet and the inclination of incisors and molars. Statistical analysis was carried to compare each measurements across the time period, and followings were brought around 1. The quantitative amount of relapse in overbite presented positive correlation with the amount of changes through the treatment. 2. Stability of intercanine width was so far secure in the case the expansion had been done through. 3. The amount of changes in intercanine width of the lower regardless of expansion or contraction manifested less than the upper, however, the relapse ratio got high. 4. The upper !and lower incisors were likely to be labioversive, and remained stable after retention. 5. The first molars of the upper and lower were conceivably tipped back immediately after treatment and returned to the original angulation. The expansion of intermolar width stayed stable across the time scheme after treatment It was suggested that the maintenance of intercanine width of lower was pertinent to perform the postretention stabilityv and the expansion of dental arch shoed be confined within physiologic boundaries of the patients.

키워드

재귀 비발치 교정치료 제1급 부정교합 Class I malocclusion nonextraction reatment relapse retention stabllity