성견과 유견에 있어서 정중구개 봉합선의 급속확장에 따른 상악골 인접 봉합선부위의 육안적 비교 관찰에 과한 연구

A comparative experimental study on gross reactions of surounding maxillary sutures to the widening of midpalatal suture in young and adult dog

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 adule dog, nasoincisive suture was not expanded, while in young dog it was espanded. 2. In adult dog, pterygopalatine suture was hardly espanded, while in young dog it was expanded unilaterally. 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 unilaterally.