Abstract
Shear bond analysis is the procedure used most frequently to gauge the tensile strength of adhesives incorporated inorthodontic treatments. In sheartensile strength analysis, pressure is placed as close as feasible to the interface between the orthodontic bracket and the surface of the tooth, parallel to the long axis of the tooth. Although numerous research on extracted teeth ofhuman and bovine teeth have been conducted, there may still be variables such as pH, humidity,temperature, and others that could affect how these materials behave in the mouth cavity. The impact of chlorhexidine (CHX) on the binding capacity for non-metallic orthodonticbrackets in vivo is not well understood. The goal of the current study is to determine how mouth rinses containing 0.12% CHX affect the adhesive strength of polycarbonate orthodonticbrackets. Thirty-four patients were part of the test category, and they were instructed to wash their oral cavityforapproximately 30 seconds using 20 ml of 0.12% CHX gluconate (Septodent). Thirty-four patients made up the control categoryand were instructed to wash their oral cavityfor 30 seconds with a placebo mouthwash of a similar hue (20 ml). Both types of mouthwashwere administered to the participants by an administrator who was not specifically involved in the trial and were kept in 120 ml labeled plastic bottles. The study participants were also kept unaware of the type of mouthwash. For the mouthwash utilized by study participants,a double-blinding technique was applied. Thirty-four patients were evaluated in the test category. Since the orthodontic bracket broke intwo patients, therefore, 32 patients were evaluated in the control category. The mean value of the strength of the shear bond in the experimental category was 15.32 megapascal (Mpa). The SD value was 2.51. The mean value of the strength of the shear bond in the control subgroup was 15.63. On statistical analysis, the t-value was 0.47. The p-value was 0.671. The difference in findings of the strength of the shear bond was statistically non-significant. The results of this investigation allow us to draw the conclusion that the shear bond propertiesof polycarbonate orthodonticbrackets are unaffected when treated with 0.12% CHX preceding the binding. The clinically meaningful adhesion strength was likewise attained by the polycarbonate orthodonticbrackets.
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