On the palatal growth of the human skull.

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Indian skulls possessed by the 1st Departement of Anatomy in the Tohoku Dental University can be divided into five stages on the basis of their stage of tooth eruption.<BR>Growth changes of the palate have been assumed on the basis of the mean values and growth rates of each measured region on the palate. The mutual relation between the lengths of the palatal process of the maxilla and of the horizontal plate of the palatine bone was also examined for every stage.<BR>The length of the palatal region of the premaxilla and the width of the forward region of the palate changed in relation to the eruption of permanent incisors or permanent canines. The length and the width of each region in the 5th stage increased by 1.01 and 1.08 times those of 1st stage. The lengths of palatal process of the maxilla, the bony plate and the alveolar process grew in relation to the eruption of the molar teeth, and the lengths of these three regions in the 5th stage increased by 1.55, 1.39 and 1.42 times those of the 1st stage, respectively. The length and width of the horizontal plate of the palatine bone and the width of the rearward region of the palate grew comparatively smoothly, and the lengths of these three regions in the 5th stage increased by 1.47, 1.23 and 1.26 times those of the 1st stage, respectively.<BR>The results of the measurements revealed that the shape of the palate had a tendency to be long with longitudinal growth. In particular, the growth of the rearward region of the palate appeared to be related to the eruption of the molar teeth.<BR>Furthermore, both lengths of the palatal process of the maxilla and of the horizontal plate of the palatine bone seemed to be related to keep the length of the palate constant on the basis of the negative values of the coefficient of correlation between both these lengths in all stages.
歯科基礎医学会の論文

On the palatal growth of the human skull.

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歯科基礎医学会 | 論文

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