Table 1.

Adhesive systems used and the manufacturer’s instructions for each

Adhesive resin product	Lot number	Manufacturer’s instructions
Optibond Solo Plus	5807385	Etch enamel and dentin for 15 s with 37.5% phosphoric acid and rinse thoroughly. Dry lightly without desiccating. Apply product to tooth surfaces, air thin for 3 s and light cure for 20 s
Optibond XTR Primer	6171908	Apply self-etching primer to tooth surfaces using a scrubbing motion for 20 s and air thin with medium pressure for 5 s
Optibond XTR Adhesive	5143490	Apply adhesive layer to tooth surfaces using a brushing motion for 15 s and air thin for 5 s with medium pressure. Light cure for 10 s