Table 1.

Manufacturers, components and application procedures of the adhesive systems used in this study.

Adhesive systems	Components	Compositions	Procedures
Clearfil Protect Bond (Kuraray Medical Inc., Japan)	Antibacterial primer Fluoride releasing bonding resin	MDPB, MDP, HEMA, water, hydrophilic, dimethacrylate, photoinitiators MDP, HEMA, Bis-GMA, silinated colloidal silica, surface treated NaF	a (20 sec), b, c, d (10 sec)
Clearfil SE Bond (Kuraray Medical Inc., Japan)	Primer Bonding resin	MDP, HEMA, water, hydrophilic dimeracyrlate MDP, Bis-GMA, HEMA, hydrophilic dimethacrylate, silinated colloidal silica	a (20 sec), b, c, d (10 sec)

a:apply primer, b:dry gently, c:apply adhesive, d:light cure