The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
권호 표지
DOI QR코드

DOI QR Code

Three-dimensional analysis of tooth movement in Class II malocclusion treatment using arch wire with continuous tip-back bends and intermaxillary elastics

  • Lee, Ji-Yea (Department of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Choi, Sung-Kwon (Department of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Kwon, Tae-Hoon (Department of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Kang, Kyung-Hwa (Department of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Kim, Sang-Cheol (Department of Orthodontics, School of Dentistry, Wonkwang University)
  • Received : 2019.06.24
  • Accepted : 2019.10.11
  • Published : 2019.11.25
Download PDF
⟨ Previous Next ⟩

Abstract

Objective: The aim of this study was to analyze three-dimensional (3D) changes in maxillary dentition in Class II malocclusion treatment using arch wire with continuous tip-back bends or compensating curve, together with intermaxillary elastics by superimposing 3D virtual models. Methods: The subjects were 20 patients (2 men and 18 women; mean age 20 years 7 months ${\pm}$ 3 years 9 months) with Class II malocclusion treated using $0.016{\times}0.022-inch$ multiloop edgewise arch wire with continuous tip-back bends or titanium molybdenum alloy ideal arch wire with compensating curve, together with intermaxillary elastics. Linear and angular measurements were performed to investigate maxillary teeth displacement by superimposing pre- and post-treatment 3D virtual models using Rapidform 2006 and analyzing the results using paired t-tests. Results: There were posterior displacement of maxillary teeth (p < 0.01) with distal crown tipping of canine, second premolar and first molar (p < 0.05), expansion of maxillary arch (p < 0.05) with buccoversion of second premolar and first molar (p < 0.01), and distal-in rotation of first molar (p < 0.01). Reduced angular difference between anterior and posterior occlusal planes (p < 0.001), with extrusion of anterior teeth (p < 0.05) and intrusion of second premolar and first molar (p < 0.001) was observed. Conclusions: Class II treatment using an arch wire with continuous tip-back bends or a compensating curve, together with intermaxillary elastics, could retract and expand maxillary dentition, and reduce occlusal curvature. These results will help clinicians in understanding the mechanism of this Class II treatment.

Keywords

References

  1. Kim YH. Anterior openbite and its treatment with multiloop edgewise archwire. Angle Orthod 1987;57:290-321.
  2. Liu J, Zou L, Zhao ZH, Welburn N, Yang P, Tang T, et al. Successful treatment of postpeak stage patients with class II division 1 malocclusion using non-extraction and multiloop edgewise archwire therapy: a report on 16 cases. Int J Oral Sci 2009;1:207-16. https://doi.org/10.4248/IJOS09019
  3. Locatelli R, Bednar J, Dietz VS, Gianelly AA. Molar distalization with superelastic NiTi wire. J Clin Orthod 1992;26:277-9.
  4. Carano A, Testa M. The distal jet for upper molar distalization. J Clin Orthod 1996;30:374-80.
  5. Keles A. Maxillary unilateral molar distalization with sliding mechanics: a preliminary investigation. Eur J Orthod 2001;23:507-15. https://doi.org/10.1093/ejo/23.5.507
  6. Duran GS, Gorgulu S, Dindaroglu F. Three-dimensional analysis of tooth movements after palatal miniscrew-supported molar distalization. Am J Orthod Dentofacial Orthop 2016;150:188-97. https://doi.org/10.1016/j.ajodo.2015.12.024
  7. Ali D, Mohammed H, Koo SH, Kang KH, Kim SC. Three-dimensional evaluation of tooth movement in Class II malocclusions treated without extraction by orthodontic mini-implant anchorage. Korean J Orthod 2016;46:280-9. https://doi.org/10.4041/kjod.2016.46.5.280
  8. Chang YI, Shin SJ, Baek SH. Three-dimensional finite element analysis in distal en masse movement of the maxillary dentition with the multiloop edgewise archwire. Eur J Orthod 2004;26:339-45. https://doi.org/10.1093/ejo/26.3.339
  9. Enacar A, Ugur T, Toroglu S. A method for correction of open bite. J Clin Orthod 1996;30:43-8.
  10. Kucukkeles N, Acar A, Demirkaya AA, Evrenol B, Enacar A. Cephalometric evaluation of open bite treatment with NiTi arch wires and anterior elastics. Am J Orthod Dentofacial Orthop 1999;116:555-62. https://doi.org/10.1016/S0889-5406(99)70189-7
  11. Min S, Chung C, Hwang CJ, Cha JY. Non-extraction treatment in Class III malocclusion by using improved superelastic NiTi wire. Korean J Orthod 2011;41:297-306. https://doi.org/10.4041/kjod.2011.41.4.297
  12. Shin SJ, Chang YI. Three dimensional finite element analysis of the phenomenon during distal en masse movement of the maxillary dentition. Korean J Orthod 1998;28:563-80.
  13. Malkoc S, Sari Z, Usumez S, Koyuturk AE. The effect of head rotation on cephalometric radiographs. Eur J Orthod 2005;27:315-21. https://doi.org/10.1093/ejo/cjh098
  14. Gaddam R, Shashikumar HC, Lokesh NK, Suma T, Arya S, Shwetha GS. Assessment of image distortion from head rotation in lateral cephalometry. J Int Oral Health 2015;7:35-40.
  15. Trpkova B, Major P, Prasad N, Nebbe B. Cephalometric landmarks identification and reproducibility: a meta analysis. Am J Orthod Dentofacial Orthop 1997;112:165-70. https://doi.org/10.1016/S0889-5406(97)70242-7
  16. Cha BK, Lee JY, Jost-Brinkmann PG, Yoshida N. Analysis of tooth movement in extraction cases using three-dimensional reverse engineering technology. Eur J Orthod 2007;29:325-31. https://doi.org/10.1093/ejo/cjm019
  17. Choi DS, Jeong YM, Jang I, Jost-Brinkmann PG, Cha BK. Accuracy and reliability of palatal superimposition of three-dimensional digital models. Angle Orthod 2010;80:497-503.
  18. Cho MY, Choi JH, Lee SP, Baek SH. Three-dimensional analysis of the tooth movement and arch dimension changes in Class I malocclusions treated with first premolar extractions: a guideline for virtual treatment planning. Am J Orthod Dentofacial Orthop 2010;138:747-57. https://doi.org/10.1016/j.ajodo.2008.11.033
  19. Andrews LF. The six keys to normal occlusion. Am J Orthod 1972;62:296-309. https://doi.org/10.1016/S0002-9416(72)90268-0
  20. Hoggan BR, Sadowsky C. The use of palatal rugae for the assessment of anteroposterior tooth movements. Am J Orthod Dentofacial Orthop 2001;119:482-8. https://doi.org/10.1067/mod.2001.113001
  21. Chen G, Chen S, Zhang XY, Jiang RP, Liu Y, Shi FH, et al. Stable region for maxillary dental cast superimposition in adults, studied with the aid of stable miniscrews. Orthod Craniofac Res 2011;14:70-9. https://doi.org/10.1111/j.1601-6343.2011.01510.x
  22. Joffe L. OrthoCAD: digital models for a digital era. J Orthod 2004;31:344-7. https://doi.org/10.1179/146531204225026679
  23. Yang WS, Kim BH, Kim YH. A study of the regional load deflection rate of multiloop edgewise arch wire. Angle Orthod 2001;71:103-9.
  24. Fushima K, Kitamura Y, Mita H, Sato S, Suzuki Y, Kim YH. Significance of the cant of the posterior occlusal plane in class II division 1 malocclusions. Eur J Orthod 1996;18:27-40. https://doi.org/10.1093/ejo/18.1.27
  25. Park HM, Kim BH, Yang IH, Baek SH. Preliminary three-dimensional analysis of tooth movement and arch dimension change of the maxillary dentition in Class II division 1 malocclusion treated with first premolar extraction: conventional anchorage vs. mini-implant anchorage. Korean J Orthod 2012;42:280-90. https://doi.org/10.4041/kjod.2012.42.6.280