A COMPARATIVE EXPERIMENTAL STUDY ON GROSS REACTIONS OF SURROUNDING MAXILLARY SUTURES TO THE WIDENING OF MIDPALATAL SUTURE IN YOUNG AND ADULT DOG

성견과 유견에 있어서 정중구개 봉합선의 급속확장에 따른 상악골 인접 봉합선 부위의 육안적 비교 관찰에 관한 연구

The author has observed the gross reactions of surrounding maxillary sutures to the widening of midpalatal suture in comparison of young dog with adult dog. Experimental animals used was two young dog and two adult dog with normal palate. After midpalatal suture was seperated with rapid palatal expansion device, experimental animals were sacrificed to observe the surrounding maxillary sutures. The following results were obtained. 1. In adult dog, nasoincisive suture was not expanded, while in young dog it was expanded. 2. In adult dog, pterygopalatine suture was hardly expanded, while in young dog it was expanded definitely. 3. In adult dog, frontomaxillary suture was not expanded, while in young dog it was expanded unilaterally. 4. In adult dog, palatoethmoidal suture was not expanded, while in young dog it was expanded unilateraily.