恒牙列期AngleⅡ1类错牙合患者颅面颌牙合生长变化的研究

目的对恒牙列期AngleⅡ

A study on thecraniofacial growth changes of the Angle's

Objective:The purpose of the study was to analyses and evaluatethe craniofacial growth changes of the Angle's Ⅱ1 patients from adolescent to young adult period.Methods:40 adolescent patients ranging from 11～16 years and 40 young adults patients ranging from 18～28 years of Angle's Ⅱ1 malocclusion in the permanent dentition were selected for the study.40 measurements for hard and soft tissues were completed by the use of computer-aided cephalometrics.Results:There existed certain amount of growth for the maxillae and mandibles of Angle's Ⅱ1 patients during the period from adolescent to young adult,which lacked such differential growth between the two jaws as that in the normal occlusion.No obvious improvement of theprofiles were observed between the two groups.The protrusion of the upper incisors and the mandibular alveolar height became larger.Conclusion:It is implied that Angle's Ⅱ1 patients should be treated as early as possible during the period of adolescent and young adult,restraining the maxillary growth while enhancing the mandibular growth.