コモンツパイ大臼歯の歯根に関する形態学的研究

DOI 被引用文献2件 オープンアクセス

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  • A morphological study on the dental roots of the molars in Tupaia glis.

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The structure of the dental roots of molars in Tupaia glis were observed.<BR>In Tupaia glis, the upper molars had 3 roots, one of them located on the lingual side and the others on the buccal. The crista interradicularis, running between each root, was Y-shaped in the roots in the developmental stage, but it was not observed clearly in the complete molars. In the M3 the roots were rarely united. The lower molars had 2 roots, located mesially and distally. The crista interradicularis ran in a mesiodistal direction.<BR>It is considered that the root patterns of the M1 and M2 in the dilambdodonta could be explained by the shape of each root and the outline of the occlusal view of the crown. The M3 was 3-rooted, and the lower molars were 2-rooted almost invariably in the dilambdodonta. The structure of the crista interradicularis seems to depend on the number of roots.

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