Avaliação da resistência adesiva de resina composta em esmalte de dentes clareados em função de sistemas adesivos

Dominguette, Alexandre Augusto Sarto; Silva, Ronan Virgílio da; Maia, Priscila Lemes; Bastos, Thiago Gouveia; Tourino, Alexandre Mendonça; Ribeiro, João Gustavo Rabelo; Moysés, Marcos Ribeiro; Ribeiro, José Carlos Rabelo

doi:10.5892/ruvrv.2012.101.396402

Cited by 1 publication

(1 citation statement)

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“…Dominguette and cols. [22] reported that bleaching agents can reduce the microhardness of restorative materials and mineralized tissues of the teeth, thereby increasing microleakage in restoration resins and changing the surface morphology of enamel and dentin, ultimately affecting the bond strength of resin restorations.…”

Section: Discussionmentioning

confidence: 99%

Tooth whitening affects bond strength of adhesive systems in enamel

Neto

Silva

et al. 2018

Matéria (Rio J.)

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This study presents how the tooth whitening affects the bond strength and fracture type of three distinct adhesivesa conventional, a self-etching, and a universal adhesivein enamel. Health bovine incisors were prepared by flattening the labial surface; part of these teeth was submitted to whitening treatment with a peroxide-based product (WhiteGold Office © 35%). The Single Bond © , AdheSE © , or Single Bond Universal © adhesive system were used to adhere a block of restorative resin to the flat surface of the teeth. Sticks measuring 10x1x1 mm were prepared and used in microtensile tests; they were also employed to examine the type of fracture. The results are analyzed with a two-way ANOVA. For both whitened and non-whitened specimens, the adhesive systems did not give statistically different bond strength values. However, the fracture shape (classified into four types) varied from a cohesive enamel type fracture for the whitened samples to a predominantly cohesive resin type fracture for the non-whitened teeth. Therefore, the whitening procedure has exerted a weakening effect on enamel even after 21 days post-treatment.

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Section: Discussionmentioning

confidence: 99%