FR-Ⅲ型矫治器对不同颅底角大小中国西部青少年功能性前牙反[牙合]患者矫治效果比较  

Comparison of correction effects of FR-Ⅲ appliance on adolescents with different cranial base angles in Western China

作　　者：SHIM SANGBEOM 吴也可[2] 赵立星[1] SHIM Sangbeom;WU Yeke;ZHAO Lixing(State Key Laboratory of Oral Diseases,National Clinical Research Center for Oral Diseases,Department of Orthodontics,West China Hospital of Stomatology,Sichuan University,Chengdu 610041,Sichuan,China;Department of Stomatology,the Hospital of Chengdu University of Traditional Chinese Medicine,Chengdu 610072,Sichuan,China)

机构地区：[1]口腔疾病研究国家重点实验室∥国家口腔疾病临床医学研究中心∥四川大学华西口腔医院正畸科,四川成都610041 [2]成都中医药大学附属医院口腔科,四川成都610072

出　　处：《暨南大学学报（自然科学与医学版）》2022年第4期425-431,共7页Journal of Jinan University(Natural Science & Medicine Edition)

基　　金：国家自然科学基金资助项目(81973684;31670992)。

摘　　要：目的:通过比较不同颅底角大小的青少年功能性前牙反[牙合]患者对FR-Ⅲ型矫治器的反应,研究FR-Ⅲ型矫治器对不同颅底角大小的患者的矫治效果及机理。方法:选取62例功能性前牙反[牙合]青少年患者,男性30例,女性32例,平均年龄(8.61±1.56)岁,均采用FR-Ⅲ型矫治器治疗。比较不同颅底角大小的患者使用FR-Ⅲ型矫治器的各项头影测量指标变化值的差异,分析颅底角与Ⅲ类错[牙合]畸形的相关性,探讨矫治器对不同颅底角Ⅲ类错[牙合]患者各骨性标志点的矫治效果。结果:(1)颅底角与SNA角、SNB角存在负相关,即颅底角越大,∠SNA、∠SNB及∠ANB均呈现变小趋势。(2)各颅底角组经FR-Ⅲ型矫治器矫治前后∠SNA、∠SNB、Y轴角、∠MP-SN指标的差异具有统计学意义。对颅底角小的患者而言,FR-Ⅲ型矫治器导致上颌牙槽嵴点(A点)前移量较少,而下颌牙槽嵴点(B点)后退量较多,容易发生下颌的顺时针旋转,有利于Ⅲ类错[牙合]的矫正。(3)对于颅底角大的患者而言,FR-Ⅲ型矫治器导致上颌牙槽嵴点(A点)前移量较多,而下颌牙槽嵴点(B点)后退量较少。结论:相对于颅底角大的患者,FR-Ⅲ型矫治器对颅底角小的青少年功能性前牙反[牙合]患者的骨改建作用更大,并且使下颌顺时针旋转,有利于凹面型的改善。Objective:To compare the response of functional anterior crossbite adolescents with various cranial base angle to Fr?nkel functional regulator-Ⅲ(FR-Ⅲ), and explore the therapeutic effects of FR-Ⅲ on patients with different cranial base angle and the mechanisms involved. Methods: A total of 62 functional anterior crossbite adolescent patients, 30 males and 32 females, with an average age of 8.61±1.56 years, were treated with FR-Ⅲ appliance. To compare the differences of cephalometric variable changes of patients with different cranial base angle before and after FR-Ⅲ appliance treatment, and to analyze the correlations between cranial base angle and Class Ⅲ malocclusion, as well as discuss the effects of appliance on the various bony landmarks of Class Ⅲ malocclusion patients with different cranial base angle. Results:(1) The cranial base angle was negatively correlated with SNA and SNB angle, SNA, SNB and ANB angle decreasing with the increase of cranial base angle.(2) There were statistically significant differences in SNA, SNB, Y-axis angle and MP-SN before and after FR-Ⅲ appliance treatment in each cranial base angle group. For patients with small cranial base angle, FR-Ⅲ causes less forward movement of the maxillary alveolar ridge point(point A), while the mandibular alveolar ridge point(point B) retreats more, which is prone to clockwise mandibular rotation, and favorable for the correction of class Ⅲ malocclusion.(3) For patients with large cranial base angle, FR-Ⅲ causes the point A to shift forward more, while the point B to retrograde less. Conclusion: Compared with the patients with large cranial base angle, the FR-Ⅲ appliance had a greater effect on bone remodeling in the functional anterior crossbite adolescents with small cranial base angle, and made the mandible rotate clockwise, which was beneficial to the improvement of concave facial shape.

关 键 词：FR-Ⅲ型矫治器 前牙反[牙合] 头影测量分析 青少年 

分 类 号：R783.5[医药卫生—口腔医学]