The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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Effects of a new type of clear overlay retainer on occlusal contacts

  • Kim, Kyoung Yeon (Department of Orthodontics, Graduate School, Kyung Hee University) ;
  • Ahn, Hyo-Won (Department of Orthodontics, Graduate School, Kyung Hee University) ;
  • Kim, Seong-Hun (Department of Orthodontics, Graduate School, Kyung Hee University) ;
  • Nelson, Gerald (Division of Orthodontics, Department of Orofacial Science, University of California San Francisco)
  • Received : 2016.10.27
  • Accepted : 2016.12.27
  • Published : 2017.05.25
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Abstract

The popularity of clear overlay retainers (CORs) has increased recently because of their advantages such as better esthetics, cost effectiveness, easy fabrication, and good compliance. However, a deficiency in posterior occlusal settling is a reported limitation of CORs. The aim of this study was to evaluate the posterior occlusal contact changes in a new type of clear orthodontic retainer called Oral-treaper (OTP), which consists of three layers and has stronger mechanical characteristics than do conventional retainers. Three patients who completed fixed orthodontic treatment received OTP as a removable retainer. Cast models were fabricated after the removal of fixed appliances (T1) and after 4 to 11 months of using the retainers (T2). We evaluated all the cast models to compare the post-orthodontic settling pattern during the use of the OTPs. The depth of occlusal contacts was evaluated using color maps. The OTP did not prevent vertical settling in all patients but resulted in an improvement in posterior occlusal contact points.

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References

  1. Keim RG, Gottlieb EL, Nelson AH, Vogels DS 3rd. 2008 JCO study of orthodontic diagnosis and treatment procedures, part 1: results and trends. J Clin Orthod 2008;42:625-40.
  2. Pratt MC, Kluemper GT, Hartsfield JK Jr, Fardo D, Nash DA. Evaluation of retention protocols among members of the American Association of Orthodontists in the United States. Am J Orthod Dentofacial Orthop 2011;140:520-6. https://doi.org/10.1016/j.ajodo.2010.10.023
  3. Rowland H, Hichens L, Williams A, Hills D, Killingback N, Ewings P, et al. The effectiveness of Hawley and vacuum-formed retainers: a singlecenter randomized controlled trial. Am J Orthod Dentofacial Orthop 2007;132:730-7. https://doi.org/10.1016/j.ajodo.2006.06.019
  4. Demir A, Babacan H, Nalcaci R, Topcuoglu T. Comparison of retention characteristics of Essix and Hawley retainers. Korean J Orthod 2012;42:255-62. https://doi.org/10.4041/kjod.2012.42.5.255
  5. Sauget E, Covell DA Jr, Boero RP, Lieber WS. Comparison of occlusal contacts with use of Hawley and clear overlay retainers. Angle Orthod 1997; 67:223-30.
  6. Dincer M, Isik Aslan B. Effects of thermoplastic retainers on occlusal contacts. Eur J Orthod 2010; 32:6-10. https://doi.org/10.1093/ejo/cjp062
  7. Aslan BI, Dincer M, Salmanli O, Qasem MA. Comparison of the effects of modified and full-coverage thermoplastic retainers on occlusal contacts. Orthodontics (Chic.) 2013;14:e198-208. https://doi.org/10.11607/ortho.990
  8. Ahn HW, Kim KA, Kim SH. A new type of clear orthodontic retainer incorporating multi-layer hybrid materials. Korean J Orthod 2015;45:268-72. https://doi.org/10.4041/kjod.2015.45.5.268
  9. Mai W, He J, Meng H, Jiang Y, Huang C, Li M, et al. Comparison of vacuum-formed and Hawley retainers: a systematic review. Am J Orthod Dentofacial Orthop 2014;145:720-7. https://doi.org/10.1016/j.ajodo.2014.01.019
  10. Thickett E, Power S. A randomized clinical trial of thermoplastic retainer wear. Eur J Orthod 2010;32:1-5. https://doi.org/10.1093/ejo/cjp061
  11. Gill DS, Naini FB, Jones A, Tredwin CJ. Parttime versus full-time retainer wear following fixed appliance therapy: a randomized prospective controlled trial. World J Orthod 2007;8:300-6.

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