Abstract
Background: Nowadays, the market of esthetic world proposes a lot of at home bleaching options; one of them is whitening strips. At home whitening strips were found to be effective in teeth whitening without tissue irritation and/or teeth sensitivity. When comparing in-office and at-home bleaching in efficiency and safety, there were no significant difference in color shade between in-office and at-home treatment. It has become more and more difficult and challenge for dentists to determine the effectiveness of various tooth-whitening systems, while keeping patients' safety paramount as manufacturers continue to provide new products that purport to be superior to others currently on the market.
Aim: To evaluate the effectiveness and safety of whitening stripes compared to in-office bleaching system.
Objectives: 1. To demonstrate the amount of demineralization caused by whitening strips. 2. To compare the whitening effect and surface demineralization of whitening strips to a well-established in-office bleaching.
Material and method: Twenty extracted human anterior teeth; free from caries, non-carious lesions, and/or defects were used in the present study. The collected teeth were cleaned from gross debris and stored in normal saline at room temperature tell use. Each crown of the stored teeth was sectioned vertically into two equal halves from incisal edge to CEJ with both halves kept attached to the root. Crowns incomplete sectioning created two groups: group (A) was treated with 3D crest whiting strips LUXE professional effect while; group (B) was treated with Philips zoom in-office bleaching gel. DIAGNOdent was used to measure the amount of surface demineralization for each half at the center while; VITA Easyshade Advance 4.0 was used to determine the shade for each half at the center.
Results: there was a significant increase in minerals loss (demineralization) for In-office bleaching system (Zoom) when compared to surface demineralization caused by over-the-counter whitening strips (Crest) at (P-value=0.05). There was an improvement in enamel shade after application of both bleaching methods, But According to Wilcoxon test this change was not significant at (P-value=0.05). Over-the-counter whitening strips (Crest) showed a significant color change at (P-value=0.015), compared to In-office bleaching system (Zoom).
Conclusions: 1. Samples bleached with the over the counter whiting strips showed significantly less surface demineralization than those bleached with in-office bleaching system. 2. Change in shade was significant in samples treated with the whitening strips compared to those bleached in-office bleaching gel.