Effect of tooth discoloration severity on the efficacy and color stability of two different trayless at-home bleaching systems

Abstract

Background. The use of trayless at-home bleaching agents in darker teeth is raising some concerns due to their unknown efficacy. The purpose of this in vitro study was to evaluate the effect of tooth discolouration severity on the efficacy and colour stability of two different trayless at-home bleaching systems. Methods. Ninety enamel-dentin samples were divided into two groups: lighter tand darker teeth. The teeth in each group were further divided into three groups (n=15): (1) tray-based system with 10% carbamide peroxide (Opalescence Oh) (control group); (2) a tray applied whitening membrane with 10% hydrogen peroxide (Treswhite Supreme); and (3) a whitening pen with 22% carbamide peroxide (Hollywood Smiles). After bleaching, the teeth were stained for 9 days using red wine. Colour readings before bleaching treatment were determined using a dental spectrophotometer and were repeated 24 h after bleaching treatment and 24 h after staining process. Analysis of variance, Bonferroni and Dunnett C tests were used at 5% significance level. Results. No differences were observed between the bleaching efficacy of Treswhite Supreme and Opalescence Oh in the lighter teeth, while Opalescence Oh had the best bleaching efficacy in the darker teeth (p<0.05). Hollywood Smiles had the worst bleaching efficay but the best color stability in both lighter and darker teeth (p<0.05). No differences were observed between the color stability values of Treswhite Supreme and Opalescence Oh. Conclusion. This study suggested that both the tooth discolouration severity and the type of trayless system used affected the bleaching efficacy, whereas only the type of trayless system affected the color stability.

Is a White Diet Necessary for Tooth Bleaching Procedures? A Systematic Review and Meta-Analysis

“…Upon closer examination, 22 of these studies were excluded for the following reasons: in 8 studies, no pigments were used during or after the bleaching process [28][29][30][31][32][33][34][35], 5 studies lacked a control group [14,16,[36][37][38], in 4 studies, the color difference, luminosity or whiteness index was not calculated [4,[39][40][41], in 4 studies, the full text could not be retrieved [42][43][44][45], and 1 study was a review [23]. This process left 17 documents eligible for qualitative analysis: 5 clinical trials [46][47][48][49][50] and 12 in vitro studies [21,[51][52][53][54][55][56][57][58][59][60][61].…”

Clareamento dental misto em paciente com dentes saturados: Relato de caso clínico

“…Os colutórios bucais, as gomas de mascar, os fios dentais, os pincéis e as conhecidas tiras ou fitas clareadoras (Bispo, 2018) são alguns outros exemplos de produtos de venda livre. A ausência de supervisão profissional eleva os riscos de uso excessivo e inapropriado, acarretando em efeitos adversos e gerando instabilidade na cor dos dentes (Ermis et al, 2018). Em diversos sites brasileiros, são encontrados agentes clareadores sem restrição de venda, entretanto, de acordo com a resolução nº 6, de 06 de Fevereiro de 2015 da Agência Nacional de Vigilância Sanitária (Anvisa), se os mesmos contiverem concentrações de PH ou PC superiores a 3%, só podem ser comercializados com prescrição do CD e é obrigatório que na embalagem apresentem uma tarja vermelha indicando a necessidade dessa prescrição (Ministério da saúde -MS -agência nacional de vigilância sanitária -ANVISA, n.d.).…”

Causes and Management of Tooth Discoloration: A Review

“…Traditional professional bleaching systems are more costly and difficult to operate than trayless bleaching systems. Gels, rinses, dentifrices, strips, and paint-on films or pens containing varied quantities of hydrogen peroxide or carbamide peroxide are examples of trayless products [5,[27][28][29][30].…”

“…On the other side, in-office bleaching systems employ a high concentration of hydrogen peroxide or carbamide peroxide, which is administered by a dentist. Both approaches have been found to be acceptable and safe in previous investigations [5][6][7][8][9]. This review aims to summarize current evidence regarding causes, classification and management of tooth discoloration.…”