This study evaluated the degree of color change of teeth and the sensitivities of teeth and gums in an in vivo study. Ranir Whitening Wraps (WW2) and Crest Whitestrips Premium (WP2) were used twice a day and Ranir Whitening Wraps (WW1) were used once a day. Color evaluations occurred at baseline, after five and seven-day use of bleaching agent and 14 days post-bleaching. Color change was evalua...

OBJECTIVES This study evaluated the effectiveness of low- and high-concentration bleaching agents on enamel and deep dentin. STUDY DESIGN Stained bovine incisors fragments were randomized placed into 10 groups (n=5), according to the sample thicknesses (2.0 mm or 3.5 mm) and bleaching agent: 10% carbamide peroxide (CP) (4 h a day/21 days); 6% hydrogen peroxide (HP) with calcium (1:30 h a day/...

Skin whitening products are commercially available for cosmetic purposes in order to obtain a lighter skin appearance. They are also utilized for clinical treatment of pigmentary disorders such as melasma or postinflammatory hyperpigmentation. Whitening agents act at various levels of melanin production in the skin. Many of them are known as competitive inhibitors of tyrosinase, the key enzyme ...

Ocean acidification represents a key threat to coral reefs by reducing the calcification rate of framework builders. In addition, acidification is likely to affect the relationship between corals and their symbiotic dinoflagellates and the productivity of this association. However, little is known about how acidification impacts on the physiology of reef builders and how acidification interacts...

Aim: The aim of this in vitro study is to describe a preclinical investigation using laser-activated bleaching agent for discolored teeth. Materials and methods: Sixty sound human central and lateral incisors were selected for this study and were randomly assigned into four groups as follows: Group 1 (n=15): only Whiteness HP 10 min; Group 2 (n=15): diode laser, wavelength 980 nm power 0.8 W–30...

Tooth discolouration affects esthetics and has a psychological impact on self-confidence behaviour. Treatment modalities include polishing bleaching. The purpose of this case report was to document the effect walking bleach method using 35% hydrogen peroxide esthetics, surrounding tissue. impact. A 39-year-old female patient reported with discolored maxillary left central incisor. On examinatio...

Why unique? Firstly, it is capable of very diverse chemistry. Hydrogen peroxide may act as either an oxidizing agent or a reducing agent. As an oxidizing agent, its application ranges from highly selective oxidation chemistries applicable to the manufacture of many organic com-pounds, through the bleaching of pulp, to the total oxidation of large organic compounds to carbon dioxide. Its reactiv...

AIM The aim of this study was to compare the neutralizing effect of antioxidant agents on the microleakage of dental restorations in nonvital teeth after bleaching with carbamide peroxide. Also assessed was the correlation of the microleakage data between an electrochemical and a staining technique. METHODS AND MATERIALS Following root canal therapy, 40 sound and similar human maxillary centr...