Influence of brushing with natural dentifrices on color change: In vitro study.

Background: To evaluate the influence of daily brushing with the use of natural toothpastes on the color change of enamel in bovine teeth.

Material And Methods: Four dentifrices were used, one conventional Colgate Total 12 - Clean Mint (G1), and three natural, Contented Toothpaste with Organic and Natural Ingredients (G2); Dental Toothpaste (G3) and Aliv-Gaia Toothpaste (G4). Eighty bovine teeth were distributed in four experimental groups with 20 teeth each (n = 20).

Influence of the volume of restorative material on the concentration of stresses in the restorative interface.

Background: To evaluate the microtensile strength in the adhesive interface depending on the volume of the composite resin used to restore class I cavities.

Material And Methods: Forty-eight human third molars received a standardized class I cavity preparation and they were separated into six experimental groups: G1 - single-bottle adhesive system; G2 - bonding system with load; G3 - single-bottle adhesive associated with low-viscosity composite resin; G4 - loaded adhesive associated with low-viscosity composite; G5 - resin-modified glass ionomer associated with single-bottle adhesive; and G6 - resin-modified glass ionomer associated with loaded adhesive. All cavities were restored with a universal restorative composite.

Influence of different photoinitiators on the resistance of union in bovine dentin: Experimental and microscopic study.

Background: To evaluate the influence of photoinitiators on the microtensile strength of adhesive systems and composite resins in bovine dentin.

Material And Methods: Forty dentin obtained from bovine teeth were randomly distributed in four groups (n = 10) according to the different adhesive systems and composite resins used: G1 - AAPS + VAPS (Ambar APS + Vittra APS); G2- AAPS + O (Ambar APS + Opallis); G3 - A + VAPS (Ambar + Vittra APS) and G4 - A + O (Ambar + Opallis). After restoration with the composite, the samples were sectioned to obtain toothpicks that were subjected to the microtensile and nanofiltration test (1.

Effect of different adhesive strategies on the microtensile bond strength of dentin to indirect resin-based composite.

Background: To evaluate the microtensile bond strength of indirect resin composite bonded to dentin using five different adhesives strategies.

Material And Methods: Forty specimens (Solidex) were produced and randomly into five groups with different adhesives strategies: (G1)- Single Bond Universal + etch + silane + RelyX Ultimate, (G2)- Single Bond Universal + silane + RelyX Ultimate, (G3)- Single Bond Universal + etch + RelyX Ultimate, (G4)- Single Bond Universal + RelyX Ultimate, and (G5)-Scotchbond Multi-purpose + RelyX ARC. After cementation the specimens were stored in 100% humidity for 24hours at 37°C.