abnormally posterior vector (APV)

Objective To measure the diagnostic indexes,including anteroposterior dysplasia indicator(APDI),overbite depth index(ODI),combination factor(CF)and extractor index(EI) of the multiloop technique in adolescents of Lanzhou area in order to provide references for the judgment of anteroposterior and vertical facial bone of intermaxilar,and pretreatment as well as posttreatment by orthodontic.

目的测定兰州地区青少年多曲唇弓矫治技术诊断指标前后向异常指数(APDI)、垂直向异常指数(ODI)、综合指数(CF)和拔牙指数(EI),为判断兰州地区青少年上下颌骨间前后向与垂直向的骨面形及正畸治疗前后诊断提供参考依据。