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Evaluation of shear bond strength of brackets bonded to fluoride-treated enamel surfaces: An in vitro study | ||
| Al-Rafidain Dental Journal | ||
| Article 16, Volume 1, Issue 3, 2001, Pages 343-352 PDF (2.81 M) | ||
| Document Type: Research Paper | ||
| DOI: 10.33899/rden.2020.166606 | ||
| Authors | ||
| Khidair A SALMAN; Ahmad A ABDUL-MAWJOOD | ||
| Abstract | ||
| ABSTRACT Enamel decalcification is a well-recognized problem associated with orthodontic treatment with fixed multibanded appliances. Several methods have been proposed to minimize the incidence and severity of white spot decalcification around brackets. The present study is concerned with the evaluation of the effect of different topical fluoride gels, applied before and after etching on the shear bond strength of directly bonded orthodontic brackets. The sample consisted of (70) human upper first premolars distributed to (7) groups: group A served as a control; groups B1, C1, andDl received, for (4) minutes prior to etching, a topical application of neutral sodium fluoride gel (1.1%), sodium monofluorophosphate gel (1.2%), and acidulated phosphate fluoride gel (1.23%) respectively. Groups B2, C2, and D2, on the other hand, were treated, for (4) minutes after etching, with topical application of neutral sodium fluoride gel (1.1%), sodium monofluorophosphate fluoride gel (1.2%), and acidulated phosphate fluoride gel (1.23%) respectively. The brackets were loaded under shear to failure using Universal Compression Machine Apparatus. The shear strengths were recorded in Megapascals. The results of the present study showed that the application of fluoride gels for (4) minutes before and after etching did not alter the shear bond strengths of directly bonded orthodontic brackets, when compared with the control group, for all groups except for group D2 in which the topical application of acidulated phosphate fluoride gel for (4) minutes after etching has resulted in a significant reduction in shear bond strength and severity of white spot decalcification around brackets. | ||
| Keywords | ||
| Bond strength; Fluoride | ||
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