Abstract
It has been common procedure for surgens to use the mucoperiosteum flap of the vomer when the cleft palate is closed. However, there have been some problems of the facial growth disturbance after injuring to the vomer area, also. Then I tried some experiments by means of the 186 infant Wister male rats in order to find out the consequence by operating to the vomer region. I divided into four groups. Group A: the only periosteum removal in a half posterior vomer region. Group B: the vomer removal lefting periosteum intact in the same region. Group C: both vomer and periosteum removal in the same region. Group D: injuries to a half anterior vomer region. Dry skull bones were made for measurement in one, two, three months after operation. Sagittal deviation and anterior growth disturbance rate were evaluated statistically. The biggest sagittal deviation rate were seen in group A and C. But its inclination was not so much. There were no significant differences among all groups in anterior length rate. These results were pointed out, at the same time, that the rats were not suitable as a experimental material in this study.
