Color Stability of Microhybrid Composite Resins Depending on the Immersion Medium.

Objective:  The aim of this study was to assess the color stability of two microhybrid composite resins after immersion in different coloring solutions for 4 weeks.

Materials And Methods:  Sixty disc-shaped samples (2 mm in thickness and 10 mm in diameter) were prepared according to ISO standard 4049. Two composite resins were used: Filtek Z350 XT (3M ESPE) and Harvard Restore (Harvard Dental International GmbH).

Shear Bond Strength of Three Composite Resins to Fluorosed and Sound Dentine: In Vitro Study.

Introduction: This in vitro study compared the shear strength of three composite resin systems to fluorosed and normal dentin.

Methods: Silorane FiltekTM P90, FiltekTMZ250 XT in combination with the adhesive system AdperTM Single bond 2, and Amelogen® Plus in association with Peak Universal Bond® were tested. Fifteen normal and 15 fluorosed dentine disks were prepared per material.

Sealing Ability of Endodontic Cements: An In Vitro Study.

The root canal system must be obturated using a hermetic seal to prevent the penetration of microorganisms and bacterial toxins into the endodontic system. The principles of adhesive dentistry have been increasingly used in endodontics. In fact, resin-based sealers are increasingly used.