Posterior Occlusion Plane Change of Adults with Angle ClassⅡ Division 1 Hyperdivergent Malocclusion Treated by Mini-implant Anchorage

doi:10.13701/j.cnki.kqyxyj.2019.11.013

Abstract

Abstract: Objective: To evaluate the posterior occlusion plane change of the adults with Angle classⅡ division 1 hyperdivergent malocclusion treated by mini-implant anchorage. Methods: 44 patients (aged 18-35 years) with Angle class Ⅱ division 1 hyperdivergent malocclusion who had extracted the upper 1st premolars and lower 2st premolars were treated with mini-implant anchorage (Group A,n=22) and non-anchorage (Group B,n=22), respectively. Pre-treatment and post-treatment cephalograms were measured and analyzed. Results: After treatment, in group A: OP-diff increased (P<0.05), while SNA, ANB, SN-MP, FH-AOP, FH-POP, and U1-PP decreased (P<0.05). In group B: SN-MP, FH-AOP, FH-POP, OP-diff, U1-PP, U6-PP, and L6-MP increased (P<0.05), while SNA, SNB, and L1-MP decreased (P＜0.05). The changes of other indexes were not statistically different (P>0.05). Conclusion: The posterior occlusion plane angle in the adults with Angle classⅡ division 1 hyperdivergent malocclusion treated by mini-implant anchorage decreases, and the mandible rotates counterclockwise.

Key words: Angle classⅡ division 1, posterior occlusion plane, mini-implant, hyperdivergent

WEI Hui, WEI Jiadai, DENG Duanyao, ZHU Siting, CHEN Ku, MO Shuixue. Posterior Occlusion Plane Change of Adults with Angle ClassⅡ Division 1 Hyperdivergent Malocclusion Treated by Mini-implant Anchorage[J]. Journal of Oral Science Research, 2019, 35(11): 1062-1065.

References

[1] 胥杨,韩向龙,白丁. 骨性Ⅱ类高角错牙合正畸治疗探讨[J].上海口腔医学, 2014, 23(4):508-512.
[2] Li X, Zhao Q, Zhao R, et al. Effect of occlusal plane control procedure on hyoid bone position and pharyngeal airway of hyperdivergent skeletal Class Ⅱ patients [J]. Angle Orthod, 2017, 87(2): 293-299.
[3] Fushima K, Kitamura Y, Mita H, et al. Significance of the cant of the posterior occlusal plane in class Ⅱ division 1 malocclusions [J]. Eur J Orthod, 1996, 18(1):27-40.
[4] Celar A, Tafaj E, Graf A, et al. Association of anterior and posterior occlusal planes with different Angle and skeletal classes in permanent dentitions : A lateral cephalometric radiograph study [J]. J Orofac Orthop, 2018, 79(4):267-276.
[5] Coro JC, Velasquez RL, Coro IM, et al. Relationship of maxillary 3-dimensional posterior occlusal plane to mandibular spatial position and morphology [J]. Am J Orthod Dentofacial Orthop, 2016, 150(1): 140-152.
[6] 贾秀, 张晔, 王培军, 等. 哈尔滨市正常牙合人群前后牙合平面数据的建立及其与牙、骨骼的相关性分析[J]. 口腔医学研究, 2009,25(2):213-216.
[7] Marchiori EC, Garcia RR, Moreira RW. Importance of occlusal plane reproduction on the semi-adjustable articulator in planning maxillary impactions for orthognathic surgery [J]. Oral Maxillofac Surg, 2013, 17(2): 109-114.
[8] Li JL, Kau C, Wang M. Changes of occlusal plane inclination after orthodontic treatment in different dentoskeletal frames [J]. Prog Orthod, 2014, 15(1):41.
[9] Tanaka EM, Sato S. Longitudinal alteration of the occlusal plane and development of different dentoskeletal frames during growth [J]. Am J Orthod Dentofacial Orthop, 2008, 134(5): 602.e1-e11.
[10] 许辉明, 陈雪芬, 孙晓峰, 等. 微型种植体支抗在正畸治疗中的疗效观察[J].牙体牙髓牙周病学杂志, 2018,28(12):724-727.
[11] Felicita AS. Quantification of intrusive/retraction force and moment generated during en-masse retraction of maxillary anterior teeth using mini-implants: A conceptual approach [J]. Dental Press J Orthod, 2017, 22(5):47-55.
[12] Ye R, Li Y, Li X, et al. Occlusal plane canting reduction accompanies mandibular counterclockwise rotation in camouflaging treatment of hyperdivergent skeletal Class Ⅱ malocclusion [J]. Angle Orthod, 2013, 83(5): 758-765.
[13] 丁少华, 刘明海, 邹廷前. 种植钉与口外弓治疗骨性Ⅱ类高角前突型错牙合畸形的垂直向效果比较研究[J].口腔医学研究, 2019, 35(4): 351-354.
[14] Bouton A, Simon Y, Goussard F, et al., New finite element study protocol: Clinical simulation of orthodontic tooth movement [J]. Int Orthod, 2017, 15(2):165-179.
[15] 高洁, 葛振林. 利用微螺钉种植体支抗矫治骨性Ⅲ类错牙合畸形的现状[J].口腔医学研究, 2018, 34(12):1274-1276.