4 食物物性の違いがラット上顎の成長発育に及ぼす影響 (第448回 大阪歯科学会例会)
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概要
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We used quantitative analysis employing bone histomorphometry to examine the effect of food consistency on bone apposition at growth sites in the maxillary complex of growing rats. Male rats aged 14 days were divided into two groups, one of which was fed a solid diet, while the other received the same diet in liquid form. We employed vital staining to permit longitudinal recording of bone apposition. Although the amount of bone apposition on the occlusal surface of the palate of rats fed a liquid diet was reduced in the anterior molar region, it was increased in the posterior region, indicating a more anteriorly directed growth rotation of the palate. Furthermore, lateral growth of the maxilla was inhibited, especially in the distal area. These results suggest that differences in the growth pattern of the upper viscerocranium induced by different food consistencies is caused not only by mechanical force on the insertion areas of the masticatory muscles, but also by growth pattern differences in the region of occlusal loading.
- 大阪歯科学会の論文
- 1996-09-25