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Modified Twin Blocks에 의한 성장기 아동의 Ⅱ급 부정교합의 치료증례
A CASE REPORT ON TREATMENT OF CLASS Ⅱ MALOCCLUSION WITH TWIN BLOCKS IN GHOWING CHILD

대한소아치과학회지 1994년 21권 2호 p.577 ~ 585

윤영수, 박재홍,

소속 상세정보

윤영수 ( ) - 전남대학교 치과대학 소아치과학교실
박재홍 ( ) - 전남대학교 치과대학 소아치과학교실

KMID : 0358919940210020577

Abstract

결론
저자들은 전남대학교병원 소아치과에 내원한 Ⅱ급 부정교합을 치료하여 다음과 같은 결론
을 얻었다.
1. 하악의 전방전위로 안모가 개선되었다.
2. Ⅱ급 구치관계가 I급 구치관계로 개선되었다.
3. Deep overbite과 large overjet이 개선되었다.
4. 상악 전치의 치축은 labial bow의 조절로 개선되었다.
5. 하악 전치의 치축이 설측으로 약간 경사되었다.
#초록#
The Twin Blocks technique was developed by Dr. William Clark of Scotland during the
early 1980's. Twin Blocks are an uncomplicated system that incorporates the use of
upper and lower bite blocks. These blocks reposition the mandible and redirect occlusal
forces to achieve rapid correction of malocclusions. They are also comfortable and the
patients wear them full-time-inducing eating time. Occlusal forces transmitted through
the dentition provide a constant proprioceptive stimulus to influence the rate of growth
and the trabecular structure of the supporting bone. The features of Twin Blocks mean
easier and quicker treatment. The occlusal inclined plane is the fundamental functional
mechanism of the natural dentition. Twin blocks are bite blocks that effectively modify
the occlusal inclined plane to induce favorably directed occlusal forces by causing a
functional mandibular displacement. Upper and lower bite blocks interlock at a 45°angle
and are designed for full-time wear to take advantage of all functional forces applied to
the dentition including the forces of mastication.
The patients who were treated with modified Twin Blocks, and following results were
observed :
1. Large overjet and deep overbite were corrected.
2. Class Ⅱ molar relationship was changed into Class I
3. Labial inclination of upper incisors was corrected by adjustment of labial bow of
upper bite block.
4. The profiles of two patients were improved by anterior displacement of mandible.