THE TREATMENT OF CLASS III MALOCCLUSION USING FR-III

Kwak, Ah-Ram; Park, Jae-Hong; Choi, Sung-Chul; Kim, Kwang-Chul

Journal of the Korean Academy of Pediatric Dentistry 2008;35(2):345-350.
Published online May 31, 2008.

THE TREATMENT OF CLASS III MALOCCLUSION USING FR-III

Ah-Ram Kwak¹, Jae-Hong Park², Sung-Chul Choi², Kwang-Chul Kim²

¹Department of Pediatric Dentistry, School of Dentistry, Kyung Hee University In
²Institute of Oral Biology, School of Dentistry, Kyung Hee University In

FR-III를 이용한 3급 부정교합 환자의 치험례

곽아람¹, 박재홍², 최성철², 김광철²

¹경희대학교 치과대학 소아치과학교실
²경희대학교 치과대학 구강생물학연구소

Correspondence: Jae-Hong Park, Tel: 02-958-9371, Email: pedopjh@khu.ac.kr

Abstract

In children with Class III malocclusion, it is important to identify whether the etiology is functional, dental, skeletal. FR-III developed by Rolf Frankel in 1970, has been used during deciduous, mixed, and early permanent dentition to correct class III malocclusion characterized by maxillary skeletal retrusion. According Frankel, the vestibular shields and upper labial pads act to counteract the forces of the surrounding musculature that restrict forward maxillary development and cause a retrusion in maxillary tooth position. This can achieve favorable developments with the basal bone, teeth and alveolar bone. We report FR-III that can be applicated in cases of early mixed dentition with mild maxillary deficiency and deepbite before the eruption of permanent maxillary incisor.

Key Words: Anterior crossbite, FR-III, Early mixed dentition