Bond Strength Of Five Current Adhesives To Caries-Affected Dentin Abdulkadir Sengün, Nimet Ünlü, Füsun Özer*, Bora Öztürk (Univ. Of Selçuk, Konya, Türkiye) Five current dentin adhesives were evaluated for their ability to bond to caries affected dentin. The materials were a total etch (Solid Bond (SB)), two self etch (Clearfil SE Bond (CSE), Etch and Prime (EP)), two one bottle (Prime and Bond 2.1 (PB), One Coat Bond (OCB)). 60 extracted molar teeth with proximal caries (mesial or distal) extending into mid-dentin were used. By grinding normal and caries-affected proximal surfaces, flat dentin surfaces were obtained. The surfaces were then bonded with each adhesive systems and composite resins were added to the surfaces by packing the material into a cylindrical-shaped plastic matrix with an internal diameter of 2,5 mm and height of 3 mm. Shear bond testing was performed following 10 days incubation of specimens in distilled water at 37°C.   Results below (means±s.d.) were analyzed by ANOVA and Wilcoxon Ranks Tests.   Materials n Caries-Affected dentin Mean ± SD (MPa) Significance Normal Dentin Mean ± SD (MPa) CSE 12 24.49±5.38 NS 29.91±8.95 SB 12 21.49±9.15 NS 21.17±5.41 EP 12 21.19±9.17 NS 14.45±6.21 OCB 12 17.43±9.78 0.006 11.99±10.15 PB 12 14.10±7.94 0.034 10.57±4.56 Groups connected by a bar are not significantly different. NS: No significance between caries affected and normal dentin.   Using SB, CSE and EP adhesive systems, there were no significant difference between caries affected and normal dentin (p>0.05). But the bond strengths of OCB and PB to caries affected dentin were significantly higher than those to normal dentin (p<0.05). These results suggest that total etch dentin bonding systems show better bond strengths to both caries affected and normal dentin than one bottle systems.