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Palate and alveolar ridge development in predental infants: a longitudinal study

Type:  Articles

Pubblication date:  /1/2016

Authors:  F. Ishida*, Y. Ukai**, T. Shimizu***

Language:  English

Institution:  *Nihon University Graduate School of Dentistry at Matsudo, Matsudo, Chiba, Japan **The University of Tokyo Graduate School of Agricultural and Life Sciences, Tokyo, Japan ***Nihon University School of Dentistry at Matsudo, Department of Pediatric Dentistry, Matsudo, Chiba, Japan Nihon University Research Institute of Oral Science, Matsudo, Chiba, Japan

Publication:  European Journal of Paediatic Dentistry

Publisher:  Ariesdue Srl

Keywords:  Alveolar ridge, Development, Growth, Newborn infant, Palate morphology, Predental period.

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Title:  Palate and alveolar ridge development in predental infants: a longitudinal study

Abstract:  Aim To investigate the developmental process of palate morphology, including the alveolar ridge, in healthy infants for the predental period of 7 months from immediately after birth. Methods The subjects were 32 healthy infants. Four or more dental casts were taken of each subject from immediately after birth until 7 months, for a total of 144 dental casts. Twelve characteristics were then measured in order to morphologically study the subjects’ palate development. Principal component analysis (PCA) was performed to investigate morphological changes in the palatal vault. Results The 12 characteristics were classified into either the alveolar ridge characteristics group, which determined the size of the alveolar ridge, or the palate characteristics group, which determined palate morphology, with each group showing different growth patterns. The characteristics of width and length increased with age in the alveolar ridge characteristics group; this correlation was maintained throughout the predental period. Meanwhile, in the palate characteristics group, the characteristics showed major developmental changes in the first 2 to 3 months after birth, but the changes were subsequently fewer from 3 to 7 months. The PCA of the palatal vault showed that the first principal component increased until 3 months but subsequently ceased to change. Conclusions In predental infants, growth patterns of palate morphology differed according to their characteristics. There were major developmental changes in the palate during the first 3 months after birth. The study findings suggest that palate growth in the first half of the predental period may affect subsequent palate growth.

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