Comparative Evaluation of Shear Bond Strength of Three Dental Adhesives under Dry and Wet Bonding Conditions: An In Vitro Study

K Mallikarjun Goud; J Arun; P Nishanth; BS Deepak; TN Nandini

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ORIGINAL RESEARCH

Year : 2016 | Volume : 8 | Issue : 2 | Page : 267-271

Comparative Evaluation of Shear Bond Strength of Three Dental Adhesives under Dry and Wet Bonding Conditions: An In Vitro Study

K Mallikarjun Goud¹, J Arun², P Nishanth³, BS Deepak⁴, TN Nandini⁵
¹ Professor, Department of Conservative Dentistry & Endodontics, Bapuji Dental College & Hospital, Davangere, Karnataka, India
² Senior Lecturer, Department of Conservative Dentistry & Endodontics, Bapuji Dental College & Hospital, Davangere, Karnataka, India
³ Private Practitioner, 52/1 2nd cross, Sri Ramapuram, Bengaluru, Karnataka, India
⁴ Professor & Head, Department of Conservative Dentistry & Endodontics, Dental College, Regional Institute of Medical Sciences, Imphal, Manipur, India
⁵ Reader, Department of Conservative Dentistry & Endodontics, Bapuji Dental College & Hospital, Davangere, Karnataka, India

Correspondence Address:
K Mallikarjun Goud
Professor, Department of Conservative Dentistry & Endodontics, Bapuji Dental College & Hospital, Davangere, Karnataka, India

Source of Support: None, Conflict of Interest: None

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Background: The old concept of total-etch/dry bonding has been superseded by total-etch/wet bonding, and later on by the self-etch systems. Manufacturers have introduced single bottle systems to be used in total-etch, self-etch, or selective-etch modes under both dry and moist conditions. The aim of this study was to evaluate shear bond strengths of three different dental adhesives under dry and wet bonding conditions, using etch-and-rinse and self-etch protocols. Materials and Methods: A total of 60 extracted human mandibular molars were decoronated perpendicular to the long axis to expose flat coronal dentin surface embedded in acrylic resin. The teeth were randomly allocated into 4 experimental groups depending on bonding agent used: Group-I: Adper™ Single Bond 2 (Wet bonding); Group-II: Adper™ Easy Bond (Dry bonding); Group-III: Single Bond Universal™ (Dry bonding); and Group-IV: Single Bond Universal™ (wet bonding), with 15 teeth per group (n = 15). Composite cylinders of 3 mm height were built and subjected to shear bond strength testing using a Universal testing machine. Data was analyzed statistically by ANOVA followed by post-hoc Tukey test. Results: Group-I (Adper™ Single Bond 2; total-etch/wet bonding) showed the highest shear bond strength followed in order by Group-IV (Single Bond Universal™; total-etch/wet bonding); Group-III (Single Bond Universal™; self-etch/dry bonding); and Group-II (Adper™ Easy Bond; self-etch/dry bonding). Group-I (Adper™ Single Bond 2) showed statistically significant difference (P < 0.001), with higher shear bond strength than Groups - II, III or IV. Conclusion: A higher shear bond strengths may be attained with Adper™ Single Bond 2 (Group-I) used under wet bonding conditions.

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