Özet:

Purpose: The aim of this study is to compare four different university adjectives to the mining bonding resistance with a two-step self-etch adjective. Tool and Method: 100 pieces of solid third molar tooth broken and lingual divided into two pieces. Examples were randomly divided into 5 groups according to adjective agents: OptiBond XTR, Clearfil Universal Bond, All Bond Universal, Single Bond Universal, Clearfil SE Bond. Each adhesive agent was applied to the fixed mine surfaces using self-etch or total-etch methods and composite resin was placed. Examples were exposed to a mixture connection test after being kept in distillated water at 24 hours at 37°C or after 5,000 thermal cycles. Data 3 direction variance analysis and Tukey post-hoc test (p = 0. 05) has been analyzed. Results: Statistical results showed that the type and method of application of the adhesive agent significantly affects the mining resistance (p < 0.001). The thermal cycle does not affect the resistance of the coating to the mine (p > 0.05). Scanned electron microscope images obtained by the Total-etch method show long resin tags and intrinsic polymeric networks. The result: With the self-etch technique, Clearfil SE Bond demonstrated more mining bonding resistance than universal adhesives. Regardless of the application technique, there was no significant difference between the connectivity resistance of the university adhesives to the mine. Mining acidized significantly increased the stretching binding resistance of all the adhesives. Keywords: Binding resistance, dental mines, dental adhesives, universal adhesives, total-etch technique EVALUATION OF ENAMEL BOND STENGTH OF UNIVERSAL ADHESIVES ASTRACT Aim: The aim of this study was to evaluate the shear bond strength of four unersal adhesives to enamel compared to two-step self-etch adhesive. Material and Methods: One hundred human third molars were divided into two fragments (buccal and lingual) and randomly assigned to five groups according to adhesive agents (OptiBond XTR, Clearfil Universal Bond, All Bond Universal, Single Bond Universal, and Clearfil SE Bond). Each adhesive agent was applied to a flattened emal surface by using the self-etch or etch-and-rinse strategy, and the compo- site resin was constructed onto the bonded emal surface. The specimens were stored for 24 h in 37°C distilled water or were thermocycled for 5,000 cycles. Then shear bond strength testing was performed. Data were analyzed using three-way analysis of variance and the Tukey post-hoc test (p = 0.05). Results: The type of adhesive agent and application strategy had a significant effect on the enamel bond strength (p < 0.001). The thermocyling process did not significantly affect the shear bond strength to emal (p > 0.05). Scanning electron microscopy images obtained with the etch-and-rinse strategy showed long resin tags and an interpenetrated polymeric network. Conclusion: Clearfil SE Bond with self-etch strategy had significantly higher shear bond strength to enamel than did the universal adhesives. No significant differences were found among the enamel bond strengths of studied universal adhesives regardless of application strategy. The pre-etching treatment of emal significantly improved the shear bond strength of all of the adhesives tested. * Recep Tayyip Erdoğan University, Faculty of Dental Medicine, Dental Diseases and Treatment, Rize **Recep Tayyip Erdoğan University, Faculty of Dental Medicine, Protetic Dental Treatment, Rize.

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