Lead Author Affiliation

Doctor of Dental Surgery

Lead Author Program & Year

IDS Year 1

Second Author Program & Year

IDS Year 2

Third Author Program & Year

Faculty/Staff/Researcher

Fourth Author Program & Year

Faculty/Staff/Researcher

Presentation Category

Research

Introduction/Context/Diagnosis

The aim of the in-vitro study was to evaluate the shear bond strength of a newly developed experimental dentin adhesive and compare it with the shear bond strength of different commercially available dentin adhesives in a dental school setting.

Methods/Treatment Plan

143 dental students enrolled in the University of Pacific Arthur A. Dugoni School of Dentistry were assigned to participate in a shear bond test exercise using cross sectioned teeth that are embedded in acrylic resin for shear bond testing. Each student conducted six tests. Exposed dentin was treated with the following adhesive system: experimental material Nougat (3M), Scotchbond Universal(3M), Peak SE (Ultradent), Peak LC (Ultradent), Prelude (Danville) and Clearfil Universal (Kuraray). The samples have then been inserted in a clamp holder to create perpendicular composite rods. These rods were sheared off with an Ultratester machine at a speed of 1mm per min. The results are recorded in MPa. ANOVA One Way statistical analysis was performed.

Results/Outcome

The highest average value of the shear bond test was obtained for Scotchbond Universal (23.7MPa) followed by the experimental material Nougat with 21.7 MPa. The lowest average bond strength was found in Clearfil Universal (17.6 MPa). The highest single bond strength was found in Scotchbond Universal with 52.5 MPa followed by Peak LC with 48.6MPa and Nougat with 44.5MPa. One-way ANOVA test revealed statistically significant differences among all the groups (p= 5.28E-07)

Significance/Conclusions

The experimental material Nougat (3M) does show a promising improvement in the dentin bond strength compared to the commercially available dentin adhesives that were tested in this study. However, Scotchbond Universal still provides the highest shear bond strength and was superior to Nougat. Scotchbond Universal is currently widely used in clinical practice. Further studies are required to understand the clinical efficacy of the experimental adhesive material.

Comments/Acknowledgements

A special thank you to Dr. Karen Schulze for providing invaluable guidance throughout the process.

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Shear Bond Strength Evaluation of an Experimental Dentin Adhesive In Comparison With 5 Commercial Adhesives in a Dental School Setting

The aim of the in-vitro study was to evaluate the shear bond strength of a newly developed experimental dentin adhesive and compare it with the shear bond strength of different commercially available dentin adhesives in a dental school setting.