Developing of internal mandible distracter and the animal experimental research / 西安交通大学学报(医学版)

ABSTRACT

ObjectiveTo introduce the progressing history of DO technique,and report the characteristics of the home-made type MS-1 internal mandibular distracter, and the effects of application of it in animal experiment. Methods15 Mongrel dogs were subjected to be lengthened of the unilateral or bilateral mandibles using the home-made type MS-1 mandibular distracter, and the regular X-ray ex aminations were made. ResultsAbout (20±5)mm in length of the andible had been achieved by the DO (distraction of osteogenesis)technique using the device. The accuracy of the distracter on lengthening would be attained to 98 % of the expectancy. The mineralization of the new bone fulfilled the gap zone about 5 weeks after the distraction had been finished during the consolidation period. ConclusionThe MS-1 type internal mandibular lengthening device has its special advantages on ap plication of cranio-maxillofacial surgery with a great expectancy.