Peng Ming-Hui, Meng Qiu-ju, Wang Lei-chang
Shanghai Luwan Dental Clinic, Shanghai 200023, China.
Hua Xi Kou Qiang Yi Xue Za Zhi. 2010 Aug;28(4):399-403, 407.
This study is to evaluate the soft tissue change of Angle's Class II division 1 malocclusion patients with vertical growth pattern after tooth extraction orthodontic treatment, and to provide experimental results to help to make orthodontic treatment plan and treatments.
38 Angle's Class II division 1 malocclusion patients with vertical growth pattern and with tooth extraction orthodontic treatment were included in this study. The pre- and post-treatment cephalometric X-rays were made and 26 measurement items were measured. The change value of pre- and post-treatment, youngsters and adults were compared.
TUL-EP, TLL-EP, upper and lower lip position, Stoms-Stomi, U1-Ptm were reduced after treatment. Upper lip sulcus and flange thickness, upper and lower lip length, upper and lower lip inclination angle, nasolabial angle, Z angle, mentolabial sulcus inclination angle were enlarged after treatment. The upper lip sulcus thickness, lower lip length and A'-Ptm of adolescent were enlarged, but adult were on the contrary. The change of upper lip length, mentolabial sulcus inclination angle and U1-Ptm between adolescent and adult was statistically different.
The best treatment period of patients with Angle's Class II division 1 malocculsion with vertical growth pattern was in the rapid growth and development period of adolescent.
本研究旨在评估安氏Ⅱ类1分类错牙合垂直生长型患者拔牙正畸治疗后的软组织变化，为正畸治疗方案的制定和实施提供实验依据。
选取38例安氏Ⅱ类1分类错牙合垂直生长型且接受拔牙正畸治疗的患者。拍摄治疗前后的头影测量X线片，测量26个测量项目。比较治疗前后、青少年与成年人的变化值。
治疗后TUL-EP、TLL-EP、上下唇位置、Stoms-Stomi、U1-Ptm减小。治疗后上唇沟和唇突厚度、上下唇长度、上下唇倾斜角、鼻唇角、Z角、颏唇沟倾斜角增大。青少年的上唇沟厚度、下唇长度和A'-Ptm增大，而成年人则相反。青少年与成年人在上唇长度、颏唇沟倾斜角和U1-Ptm的变化上有统计学差异。
安氏Ⅱ类1分类错牙合垂直生长型患者的最佳治疗时期为青少年快速生长发育期。
