口蓋に癩痕組織を有する顎骨に加えた顎整形力の効果に関する実験的研究

抄録

This study was undertaken to examine the effect of palatal scar tissue on the growth of maxillofacial bones and to find what changes could be produced in surgically affected maxillofacial bones and soft tissues by application of orthopedic force during the early stage of development. Experimental dogs (four-months-old) were divided into 3 groups: (1) the group without operation, (2) the group which received only operation and (3) the group which received operation and maxillary expansion､ Cephalograms were obtained from these dogs. Plaster models of the maxilla were made and the palatal bones and soft tissues examined histologically. Linear analysis confirmed the effect of orthodontic force applied to the maxillofacial bones with scar tissue, as examined from the volume of osteogenesis and from histological differences in palatal epithelium and subepithelial tissues. This study suggests that early orthodontic treatment for growth control is helpful for subsequent growth of the surgically affected maxillofacial bones.