LATERAL ASYMMETRY IN CANINE MASTICATION AS EVIDENCED BY BONE WEIGHT | BIONATURE

In six adolescent pups, the weights of certain skull bones (mandible, maxilla, frontal, parietal, temporal, zygomatic, and palatine) that attach to mastication muscles were investigated. On both sides, the weights are unequal. In four of the six species studied, one side can be stated to be dominant based on the difference in total bone weights between the right and left sides, as well as the number of individual bones heavier on one side. The left half of the body is significantly more dominating than the right. The mean weights of all bones are bigger on the dominant side, according to an analysis of the weights of individual bones in these animals. For the parietal, temporal, and zygomatic bones, the variations in mean weights are statistically significant.

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