Skeletal Effects of Modified Twin-block on Patients in Non-growth Period with Disc Displacement with Reduction.

doi:10.13701/j.cnki.kqyxyj.2017.05.021

Abstract

Abstract: Objective: To assess the skeletal changes of patients with disc displacement with reduction not in pubertal or pre pubertal stage treated with modified Twin-block by means of lateral cephalometric radiographs. Methods: Twenty-six patients with disc displacement with reduction over 20 years were included in the study. All patients were successfully treated with modified Twin-block. Lateral cephalometric radiographs were taken before and 2 months after treatment. Measurements of SNA, SNB, ANB, SN-PP, PP-MP, N-ANS, ANS-Me pre and post were taken. Results: ANS-Me values significantly increased after treatment. There were no significant differences for the indices of SNA, SNB, ANB, SN-PP, PP-MP, N-ANS before and after treatments. Conclusion: Modified Twin-block slightly increases lower facial height of patients over 20 years hisoldy with disc displacement with reduction. No other skeletal changes were found in this study.

CLC Number:

R782.6

HU Xin-xin, ZHU Yao-min, HE Liu-ting, GU Ying, LIANG Zhi-gang, ZHENG Cang-shang.. Skeletal Effects of Modified Twin-block on Patients in Non-growth Period with Disc Displacement with Reduction.[J]. Journal of Oral Science Research, 2017, 33(5): 550-553.

References

[1] Wilkes CH. Internal derangements of the temporomandibular joint. Pathological variations [J]. Arch Otolaryngol Head Surg,1989,115(4)∶469-477
[2] CLark WJ. The twin block technique A functional orthopedic appliance system [J]. Am J Orthod DentofaciaI Orthop,1988,93(11)∶1-18
[3] Yildirim E, Karacay S, Erkan M. Condylar response to functional therapy with Twin-Block as shown by cone-beam computed tomography [J]. Angle Orthod,2014,84(6)∶1018-1025
[4] Ehsani S, Nebbe B, Normando D, et al. Short-term treatment effects produced by the Twin-block appliance: a systematic review and meta-analysis [J]. Eur J Orthod,2015,37(2)∶170-176
[5] Giuntini V, Vangelisti A, Masucci C, et al. Treatment effects produced by the Twin-block appliance vs the Forsus Fatigue Resistant Device in growing Class II patients [J]. Angle Orthod,2015,85(5)∶784-789
[6] Tarvade S M, Chaudhari C V, Daokar S G. Dentoskeletal comparison of changes seen in class II cases treated by Twin Block and Forsus [J]J Int Oral Health,2014,6(3)∶27-31
[7] Yildirim E, Karacay S, Erkan M. Condylar response to functional therapy with Twin-Block as shown by cone-beam computed tomography [J]. Angle Orthod,2014,84(6)∶1018-1025
[8] Mahamad IK, Neela PK, Mascarenhas R, et al. A comparision of Twin-block and Forsus (FRD) functional appliance - a cephalometric study [J]. Int J Orthod,2012,23(3)∶49-58
[9] Kidner G, DiBiase A, DiBiase D. Class III Twin Blocks: a case series [J]. J Orthod,2003,30(3)∶197-201
[10] Tümer N, Gültan AS. Comparison of the effects of monoblock and twin-block appliances on the skeletal and dentoalveolar structures [J]. Am J Orthod Dentofacial Orthop,1999,116(4)∶460-468
[11] Zymperdikas VF, Koretsi V, Papageorgiou SN, et al. Treatment effects of fixed functional appliances in patients with Class II malocclusion: a systematic review and meta-analysis [J]. Eur J Orthod,2016,38(2)∶113-126
[12] Panchen H, Ruf S, Thomalske C. Mandibular articular disk position changes during Herbst treatment: A prospective longitudinal MRI study [J]. Am J Orthod Dentofaeial Orthop,1999,116(2)∶207-214
[13] Cholasueksa P, Warita H, Soma K. Alterations of the Rat Temporomandibular Joint in Functional Posterior Displacement of the Mandible [J]. Angle Orthod,2004,74(5)∶677-683
[14] Ruf S, Pancherz H. Temporomandibular joint remodeling in adolescents and young adults during Herbst treatment: a prospective longitudinal magnetic resonance imaging and cephalometric radiographic investigation [J]. Am J Orthod Dentofacial Orthop,1999,115(6)∶607-618
[15] 詹静,谷志远.下颌前导后髁突骨形态学指标变化的动物实验[J].中华口腔医学杂志,2013,48(5)∶303-306
[16] Rabie ABM, She TT, Hagg U. Functional appliance therapy accelerates and enhances condylar growth [J]. Am J Orthod Dentofacial Orthop,2003,123(1)∶40-48
[17] 莫士诚,赵春洋,王林.应用功能矫治器下颌前伸髁状突改建的研究进展[J].口腔医学2014,34(8)∶627-630
[18] 麦理想,张志光,王大为.twin-block矫治器治疗后患者颞下颌关节的适应性改建[J].国际口腔医学杂志,2009,36(5)∶623-625
[19] 马志贵,沈宇清,杨驰,等.功能矫治器复位可复性盘移位后颞下颌关节间隙的改变[J].中国口腔颌面外科杂志,2014,12(3)∶233-238