Effect of early correction on juvenile mandibular posterior contraction deformity and its influence on aesthetic effect
[Objective]To investigate the effect of spiral arch amplifier combined with Twin-block appliance and its effect on aesthetic effect.[Methods]Sixty-five adolescent patients with jaw deformity admitted in Seth Stomatological Hospital from January 2021 to January 2022 were divided into two groups according to the random number method,a control group(33 cases)and an observation group(32 cases),the control group was given Twin-block appliance early,and the observation group was given spiral arch extension combined with Twin-block appliance early,and maxillofacial morphology,facial beauty index,tooth bite force and chewing ability were compared between the two groups.[Results]Three months after the correction,in the observation group,the improvement of the center-nasal root point-upper socket angle(SNA),saddle center-nasal root point-lower socket angle(SNB),upper socket-nasal root point-lower socket angle(ANB),lower anterior facial height(ANS-Me),upper anterior facial height(N-ANS),and total anterior facial height(N-Me)were better than those in the control group(P＜0.05).Three months after the correction,the improvement of the upper lip angle(ALs-FH),facial process angle(G-Sn-Pg),jaw groove inclination angle(Pg B-FH),and jaw lip groove angle(Li-b-Pos)of the observation group were better than those of the control group(P＜0.05).Three months after the correction,the tooth bite force and chewing ability of the observation group were better than those of the control group(P＜0.05).[Conclusion]The early correction of spiral arch amplifier and Twin-block appliance can effectively improve the facial morphology,improve the facial aesthetic effect,and improve the tooth bite force and chewing function.
万方数据
维普
