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ORIGINAL ARTICLE
Year : 2014  |  Volume : 17  |  Issue : 1  |  Page : 31-34

Effect of saliva contamination on the shear bond strength of a new self-etch adhesive system to dentin


1 Department of Conservative Dentistry and Endodontics, People's College of Dental Sciences, Bhopal, India
2 Department of Prosthodontics, People's College of Dental Sciences, Bhopal, India
3 Department of Preventive and Community Dentistry, Mamatha Dental College, Khammam, Andhra Pradesh, India
4 Department of Preventive and Community Dentistry, PMNM Dental College and Hospital Bagalkot, Karnataka, India

Correspondence Address:
Swapna Munaga
Department of Conservative Dentistry and Endodontics, People's College of Dental Sciences, Bhanpur, Bhopal 462 037, Madhya Pradesh
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0972-0707.124124

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Aims and Objectives: To evaluate the effect of saliva contamination on the shear bond strength of a new two-step self-etch adhesive (P90 system adhesive) to dentin and to determine the effect of contaminant removing treatments on the recovery of bond strengths. Materials and Methods: The buccal surfaces of 40 human premolars were ground to expose dentin. The specimens were randomly divided into four groups. Group 1 is uncontaminated and serves as the control group. Further groups were divided based on the step in the bonding sequence when the contamination had occurred as follows: Group 2 (primer, saliva contamination, rinse and dry), group 3 (after procedure of group 2, reapplication of primer), and group 4 (after procedure like in control group, saliva contamination, rinse and dry). Filtek P90 composite resin cylinders of 3 mm diameter and 3 mm length were fabricated on the surfaces. Shear bond strength testing was done in an Instron Universal Testing Machine and the data were subjected to one-way analysis of variance (ANOVA) and Student's t-test. Results: With P90 system adhesive, group 2 and group 4 showed lower shear bond strength than group 1 (control) and group 3 (P < 0.05). Conclusion: Saliva contamination significantly decreased the shear bond strength of the adhesive to dentin.


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