Susceptibility to Coffee Staining during Enamel Remineralization Following the In‐Office Bleaching Technique: An In Situ Assessment

Abstract

The results of this in situ study suggest that the mineral loss caused by in-office dental bleaching is minimal and is partly compensated by remineralization due to contact with saliva. Additionally, whiteness was not affected by daily exposition to coffee during the enamel remineralization, which indicates that avoiding the consumption of coffee immediately following in-office bleaching is unnecessary. (J Esthet Restor Dent 28:S23-S31, 2016).

In situ evaluation of color stability and hardness' decrease of resin‐based composites

“…Three specimens of each resin‐based composite were fixed in the palatal device with sticky wax (ASFER, São Caetano do Sul, SP, Brazil) and covered by a permeable plastic screen. The specimens were randomly placed in the palatal devices (by drawing lots) …”

“…Eight volunteers (4 men and 4 women) aged 20–30 years, who met the inclusion and exclusion criteria, as described in Table , participated in this study . The volunteers were oriented to use the palatal device uninterruptedly, removing it during meals, ingestion of drinks that were not proposed in the study, or brushing their teeth.…”

“…The specimens were randomly placed in the palatal devices (by drawing lots). 27 for coffee, and 0 for water. respectively.…”

“…Eight volunteers (4 men and 4 women) aged 20-30 years, who met the inclusion and exclusion criteria, as described in Table 1, participated in this study. 27 The volunteers were oriented to use the palatal device After the first 10 days period, the volunteers delivered the palatal devices, which were disinfected, and then the specimens were removed for the color stability and hardness measurements. Thereafter, the volunteers received another palatal device and specific beverages for the next 10 days.…”

“…Inclusion and exclusion criteria for volunteer participation in this study27 CIELAB color difference (DE*) according to each staining condition…”