In vitro Assessment of the Effect of Opalustre Bleaching System on Dental Enamel

Abstract

The study was performed to investigate the changes induced by mechanical-chemical action of a bleaching product on dental enamel and to assess the effect of some remineralization products containing calcium, phosphate, and fluoride applied in conjunction with the bleaching product by surface roughness analysis using profilometry. Forty tooth samples were randomly divided in three study groups and a control group. In control group (group IV) the samples were maintained in artificial saliva. The study groups were as follows: group I-samples submitted to bleaching procedure using Opalustre (3 times a day, 1minute each), group II-samples submitted to remineralization and then to whitening, group III-samples submitted to remineralization, whitening and then remineralization. The surface roughness was determined in relation to a reference surface using Portable Surface Roughness Measuring Tester SJ-210 (Mitutoyo, America Corporation, USA). The bleaching system Opalustre increased the roughness of enamel and the product that contains calcium, phosphate and fluoride applied before and after bleaching improved the roughness parameters.

Evaluation of Rremineralization Capacity of Non-fluoride Home Products

“…Fluoride levels of three parts per million (ppm) are necessary in order to modify balance from net demineralization to net remineralization. Studies showed the efficacy of fluoride in enamel, dentine and cement remineralization [15][16][17][18].…”

Comparative Evaluation of the Effect of Surface Polishing of a Glaze/composite Sealant and Different Polishing Systems on Surface Roughness of Three Composite Resin Type

“…Obtaining a smooth, glossy surface was considered a major goal, not only for aesthetic reasons, but also for oral health. Incomplete finishing of restored surfaces can result in dental plaque accumulation, gingival inflammation, periodontal problems, demineralisation of the dental structure, appearance of stains or caries adjacent to composite resin restorations [3][4][5]. Finishing of composite resins refers to coarse contours and rendering of desired anatomy, while polish refers to roughness reduction and removal of scratches created by finishing tools [6][7][8].…”