カイハラ　ヤスタカ   KAIHARA YASUTAKA   海原　康孝    所属   朝日大学  歯学部 口腔構造機能発育学講座 小児歯科学    職種   准教授
発表年月日	2007/06
発表テーマ	Factors related to preventing relapse of deciduous anterior crossbite
会議名	The 21st IAPD International Congress
学会区分	国際学会
単独共同区分	共同
発表者・共同発表者	Kaihara Y., Hayashi F., Miura K., Kozai K
概要	We investigated the pre-treatment morphological characteristics of craniofacial complex and dentition of children with deciduous anterior crossbite who showed favorable prognoses and avoided relapse even after growth and development were completed. The following characteristics were demonstrated in the children without relapse: (1) There was no family history of anterior crossbite. (2) There were no significant differences between two groups in the width or length of mandibular dental arch. (3) Anterior facial height was not longer than the standard value. (4) On angular analysis, the variable with the most conspicuous difference between the non-relapsed prognosis group and relapse group was the NSAr angle. The value of this angle in the nonrelapsed prognosis group was close to the standard value.