Microleakage of a microhybrid composite resin using three different adhesive placement techniques.

Purpose: To evaluate the efficacy of two adhesive systems in reducing microleakage when applied with three different adhesive placement techniques.

Materials And Methods: Sixty freshly extracted caries-free human premolars and molars were used. MO/DO Class II standardized preparations were performed with the gingival margin placed 1 mm above the CEJ.

Clinical evaluation of a 35% hydrogen peroxide in-office whitening system.

This study evaluated the effectiveness of light-curing (heat conversion) vs no light-curing (no heat conversion) of a 35% hydrogen peroxide in-office tooth whitening system. Twenty patients with sound medical history (without tooth sensitivity) participated in this randomized, parallel clinical evaluation. Only six maxillary anterior teeth with discoloration and a tooth shade of A3 or darker were selected.