MAXILLARY MOLAR DISTALIZATION WITH THE BONE-SUPPORTED PENDULUM |
Yong-Gul Jang, Ho-Won Park, Ju-Hyun Lee, Hyun-Woo Seo |
Department of pediatric dentistry, College of dentistry, Kangnung-Wonju national university |
Bone-supported pendulum을 이용한 상악대구치 원심이동 |
장용걸, 박호원, 이주현, 서현우 |
강릉∙원주 대학교 치과대학 소아치과학교실 |
Correspondence:
Ho-Won Park, Tel: 033-640-315, Email: pedo@kangnung.ac.kr |
Received: 19 March 2009 • Accepted: 10 July 2009 |
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Abstract |
To distalize the maxillary molars, the traditional techniques such as extra-oral traction, Wilson distalizing arches, removable spring appliances and Schwarz plate-type appliances have been used. But, these need considerable patient cooperation. For minimal patient compliance, many practitioners use the pendulum appliances. Several clinical studies demonstrated pendulum is effective molar distalization appliance in the growing patient(using the premolars and the palate as anchorage). But unfortunately, maxillary anterior teeth also shift mesially as the molar moves distally. As a result anchorage loss is occurred. To overcome these disadvantages, we used bone-supported pendulum, combined the conventional pendulum with Skeletal Anchorage System(SAS). The miniscrew was implanted in the anterior paramedian region of the median palatal suture, which has comparatively sufficient bone thickness and is low risk to damage on the dental follicles. We report three cases, using bone-supported pendulum for the maxillary molar distalization in children. After treatment, we find out anchorage stability, minimal unfavorable anterior tooth movement and sufficient molar distalization. |
Key Words:
Molar distalization, Pendulum, Anchorage, Miniscrew, Skeletal Anchorage System(SAS) |
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