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One hundred elastomeric ligatures from one manufacturer were chosen for this study: 10 ligatures were tested at room temperature; the other 90 ligatures were divided into three equal groups and were stretched over stainless steel dowels. Group 1 samples were kept in artificial saliva. Group 2 samples were rinsed twice a day with 15 ml of Orthokin®, each time for 1 minute, and the Group 3 samples were rinsed twice a day with 15 ml of Oral B®, each time for 30 seconds, both samples being immersed in another artificial saliva prior to being put back in the test tubes. Each time, 10 of the samples were tested for their tensile strength at different intervals of 1, 7 and 28 days until they ruptured. One-way and two-way ANOVA and Tukey test were used for evaluation.
Clinical Relevance: The aim of this study was to evaluate the in vitro effects of Orthokin®, Oral-B®, and artificial saliva on tensile bond strength of elastomeric ligatures.
Article
Wire and elastomeric ligatures are the most common types of bracket ligation used in orthodontics.1 The advantages of elastomeric ligatures are that they can be applied quickly, are comfortable to the patient, and are available in a variety of colours. Numerous studies have evaluated the strength characteristics of elastomeric ligatures in various environments and different conditions.2,3,4,5,6 It has been a common finding that rubber elastics will lose some part of their initial force after they are applied in the mouth for the purpose of oral activities. Several factors have been found to be effective on the force degradation of elastomers:
Nowadays, the application of a mouthrinse for oral hygiene purposes is increasing, especially for orthodontic patients. A few studies have been conducted on the effects of disinfecting and antibacterial solutions on the properties of lastomeric ligatures.8,9,10 However, the effects of different types of mouthrinse on force degradation of elastomeric ligatures have not been reported in the literature. The aim of this study was to evaluate the in vitro effects of Orthokin®, Oral-B®, and artificial saliva on the tensile bond strength of elastomeric ligatures.
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