Abstract
Introduction
Esthetic brackets have become quite popular in Orthodontics in recent decades due to their excellent color stability and adherence. Furthermore, the demand for orthodontic treatment with aesthetic orthodontic brackets among adult patients has increased significantly. Also, clinical orthodontists are concerned about the elastomeric ligatures used to connect the bracket/wire combination and want to ensure that the ligatures' properties stay intact. Color changes caused by staining resulting from food ingestion or contact with intraoral fluids are particularly undesirable. These changes are due to swelling and discoloration when elastomers are exposed to the intraoral environment, and it is caused by buccal fluids and bacteria that fill up the spaces in the rubber matrix(1)(2). To minimize the influence of some types of food affecting the color of elastomeric ligatures, metallic pigments have been added during the manufacturing process; however, they reduce the level of force released, impairing their elastomeric properties(1).
Much research has been conducted to investigate the impact of the oral cavity on the elastic characteristics of elastomeric ligatures, such as force decay, friction, and dimensional changes.(3)(4)(5) Researchers, on the other hand, have shown minimal concern regarding the behavior of orthodontic materials following exposure to the oral environment, particularly the extent to which these changes interfere with aesthetics. Color changes in the elastomeric modules used to connect orthodontic archwires to brackets are a common concern among orthodontists and patients.
References
- Wong AK. Orthodontic elastic materials. Angle Orthod. 1976;46(2):196–205.
- von Fraunhofer JA, Coffelt MT, Orbell GM. The effects of artificial saliva and topical fluoride treatments on the degradation of the elastic properties of orthodontic chains. Angle Orthod. 1992;62(4):265–74.
- Baccetti T, Franchi L. Friction produced by types of elastomeric ligatures in treatment mechanics with the preadjusted appliance. Angle Orthod. 2006;76(2):211–6.
- Taloumis LJ, Smith TM, Hondrum SO, Lorton L. Force decay and deformation of orthodontic elastomeric ligatures. Am J Orthod Dentofacial Orthop. 1997;111(1):1–11.
- Eliades T, Eliades G, Silikas N, Watts DC. In vitro degradation of polyurethane orthodontic elastomeric modules. J Oral Rehabil. 32(1):72–7.
- Kim SH, Lee YK. Measurement of discoloration of orthodontic elastomeric modules with a digital camera. Eur J Orthod. 2009;31(5):556–62.
- Lew KK. Staining of clear elastomeric modules from certain foods. J Clin Orthod. 1990;24(8):472–4.
- Ardeshna AP, Vaidyanathan TK. Colour changes of orthodontic elastomeric module materials exposed to in vitro dietary media. J Orthod. 2009;36(3):177–85.
- Fernandes ABN, Ruellas ACO, Araujo MVA, Sant’Anna EF, Elias CN. Assessment of exogenous pigmentation in colourless elastic ligatures. J Orthod. 2014;41(2):147–51.
- Silva AVM da, Mattos GV de, Kato CM, Normando D. In vivo color changes of esthetic orthodontic ligatures. Dental Press J Orthod. 2012;17(5):76–80.
- Dowling PA, Jones WB, Lagerstrom L, Sandham JA. An investigation into the behavioural characteristics of orthodontic elastomeric modules. Br J Orthod. 1998;25(3):197–202.
- Eliades T, Eliades G, Watts DC. Structural conformation of in vitro and in vivo aged orthodontic elastomeric modules. Eur J Orthod. 1999;21(6):649–58.
- Eliades T, Bourauel C. Intraoral aging of orthodontic materials: the picture we miss and its clinical relevance. Am J Orthod Dentofac Orthop. 127(4):403–12.
- Kawabata E, Dantas VL, Kato CB, Normando D. Color changes of esthetic orthodontic ligatures evaluated by orthodontists and patients: A clinical study. Dental Press J Orthod. 2016;21(5):53–7.
Corresponding Author
Dr Kalyani Shriniwas Chatla
Postgraduate Student, Department of Orthodontics and Dentofacial Orthopedics, Pandit Deendayal Upadhyay Dental College, Kegaon, Solapur
DOI: https://dx.doi.org/10.18535/jmscr/v10i5.16
