Abstract
Experimental rats in five different stages of growth development were used here. Operation-stress-like excision of the skin was done in the buccal region, as well as resection of malar bone and the influence on the craniofacial bones and the different growth process of each was observed. As a result, cranfofacial bones were found to deviate on the same side in the rats excised with maximum tonus on the same side of the buccal skin. The lighter the weight, the more deviated was the affected region, showing that too much tonus on facial skin in the early stage of growth process causes growth disturbance in craniofacial bones. In the rats resected right malar bones, although the deviation of craniofacial bones to left side was recognizable in this experiment, it was not markedly so.
