Bonding procedure
tooth
The entire tooth was etched for 20 s with 35% phosphoric acid gel (Select HV etch, BISCO, USA), the acid etch agent was aspirated then rinsed with water for approximately 20 s, then excess moisture dried off with a gentle stream of air with triple way syringe until the chalky white appearance of the etched enamel.(Fig. Enamel etching for conventional celluloid matrix group