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KMID : 0362719750130100929
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Journal of the Korean Dental Association
1975 Volume.13 No. 10 p.929 ~ p.933
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A CASE REPORT OF ANGLE’S CLASSⅢ MALOCCLUSION
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Lee Hui-Jo
Seo Jeong-Hun
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Abstract
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A girl aged 15 years 6 months, had a class Ⅲ malocclusion characterized by severe maxillary anterior crowding and a retarded maxilla. Molar relationship was class Ⅲ on both sides, incisor overjet was - 2.9mm. and incisor overbite was 5.5mm. The patient underwent extraction of four first premolars and was trested with a multi-banded light force system. After 13 months, the patient gained a normal verbite-overjet relationship of anterior teeth and a class 1 molar relationship. Superimposition of pretreatment and posttreatment cephalograms upon the line SN registered at S showed backward downward rotation of the mandible.
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