Effect of carbamide peroxide treatments on the metal-ion release and microstructure of different dental amalgams.

Objectives: A variety of methods have been used to model the effects of bleaching agents on tooth tissue and dental materials. Although several studies have evaluated the effects of bleaching agents on restorative materials, little attention has been directed to metal ion release from dental amalgam following exposure to bleaching agents. This in vitro study investigated the effects of two carbamide-peroxide-based bleaching gels on metal ion release from different dental amalgams.

The effect of 2 different bleaching regimens on the surface roughness and hardness of tooth-colored restorative materials.

Objective: The purpose of this in vitro study was to evaluate the effects of 10% carbamide peroxide (Vivastyle/Vivadent) and 6.5% hydrogen peroxide strip bands (Crest Professional Whitestrips) on the surface roughness and hardness of the 3 different tooth-colored restoratives: an ormocer (Definite), a packable composite (Filtek P60), and a flowable composite (Filtek Flow).

Method And Materials: A total of 48 specimens (10 mm in diameter and 2 mm thick) of each material were fabricated against a mylar surface.

Oral health in postmenopausal Turkish women.

Unlabelled: The most common condition affecting all women is menopause and most women spend one third of their lives after the menopause. Menopause is accompanied by a number of characteristic physical changes, some of which are manifested in the oral cavity.

Purpose: The objective of this study was to evaluate the oral health status of a group of menopausal women who visited a menopause clinic in Ankara, Turkey.

The effect of two different polishing techniques on microleakage of new composites in Class V restorations.

Aim: The purpose of this study was to investigate the effect of polishing systems on the microleakage of a nanofill, a nanohybrid, and a microhybrid composite in Class V cavities.

Methods And Materials: Preparations were made at the cemento-enamel junction (CEJ) of 36 extracted human premolars. The teeth were randomly divided into three groups and restored with new resin composites according to the manufacturers' instructions as follows: Group 1, Filtek Supreme & Single Bond; Group 2, Grandio & Solobond; and Group 3, Artemis & Excite.

The weight change of various light-cured restorative materials stored in water.

This study investigated weight changes of seven different light-cured composite restorative materials, one polyacid glass ionomer compomer, and one light-cured glass-ionomer cement following short-term and long-term storage in water. Two packable composites, three universal (hybrid) composites, one microglass composite, one polyacid glass ionomer resin composite (compomer), one microhybrid low-viscosity (flowable) composite, and one light cured glass ionomer composite cement were evaluated in this study. The weight changes of these specimens were measured daily (short-term storage), and they were measured after six weeks (long-term storage) using an electronic analytical balance.

The effect of menopause, hormone replacement therapy (HRT), alendronate (ALN), and calcium supplements on saliva.

Purpose: In menopausal women many physiological changes take place, most of which are due to decreased estrogen production. It is known estrogen influences oral health in a number of ways and saliva undergoes variations depending upon the levels of this hormone.

Materials And Methods: The study was designed to evaluate the relationship of menopause, hormone replacement therapy (HRT), alendronate (ALN), and calcium supplements on salivary flow rate, saliva pH, and electrolytes.

Effect of two different bleaching regimens on the gloss of tooth colored restorative materials.

Objectives: Vital tooth bleaching with peroxide is one of the most common cosmetic procedures in dentistry and can be accomplished using a variety of methods or regimens. Recently, new generation of tooth color restorative materials were introduced to market. The purpose of this in vitro study was to determine the gloss changes of three different tooth color restorative materials: Flowable composite (Filtek Flow/3M), packable composite (Filtek P60/3M) and ormocer (Definite/DEGUSSA) after two different bleaching regimens (Vivastyle/VIVADENT) and (Crest Professional Whitestrips/PROCTER and GAMBLE).

Bleaching-induced colour change in plastic filling materials.

The purpose of this in vitro study is to compare the colour changes of five different tooth-coloured restoratives: Ormocer (Definite/Degussa), compomer (Dyract AP/Dentsply De Tray), packable composite (Filtek P60/3M), flowable composite (Filtek Flow/3M) and hybrid composite (Filtek Z250/3M) after two different bleaching regimens [Vivastyle (10% carbamide peroxide)/Vivadent and Crest Professional Whitestrips (6.5% hydrogen peroxide strip bands)/Procter & Gamble]. Fifteen specimens of 30 x 30 x 2mm(3) size were fabricated from each material and randomly divided into three groups of five.

Bonding to enamel and dentin using self-etching adhesive systems.

Objectives: This study investigated the effectiveness of three different dentin adhesive systems on the adhesion of resin composite to both dentin and enamel.

Method And Materials: The flat dentin and enamel surfaces of 60 extracted human molar teeth were exposed by wet grinding with 600-grit silicon carbide paper. One total-etch self-priming adhesive system (Prime & Bond NT), one two-step self-etching primer adhesive system (Clearfil SE Bond), and one "all-in-one" self-etching adhesive system (Prompt L-Pop) were evaluated.