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ORIGINAL ARTICLE
Year : 2022  |  Volume : 25  |  Issue : 3  |  Page : 264-268

Role of phosphate-buffered saline on push-out bond strength of MTA FlowTM and BiodentineTM after acid challenge: An in vitro study


1 Department of Conservative Dentistry and Endodontics, Lenora Institute of Dental Sciences, Rajahmundry, Andhrapradesh, India
2 Department of Conservative Dentistry and Endodontics, St Joseph Dental College, Eluru, Andhrapradesh, India
3 Department of Conservative Dentistry and Endodontics, Vishnu Dental College, Bhimavaram, Andhrapradesh, India

Correspondence Address:
Prof. Velagala L Deepa
Department of Conservative Dentistry and Endodontics, Lenora Institute of Dental Sciences, Rajanagaram, Rajahmundry, Andhra Pradesh
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jcd.jcd_3_22

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Context: The physical and chemical properties of root repair materials are adversely affected when placed in areas of inflammation with acidic pH. Aim: To evaluate the role of phosphate-buffered saline (PBS– pH 7.4) on push-out bond strength (POBS) of MTA flow and Biodentine (BD) after acid challenge with butyric acid buffered solution (BABS– pH 5.4). Subjects and Methods: Eighty mid-root dentin slices (2 mm thick; 1.3 mm lumen diameter) were prepared and were divided into two groups (n = 40) based on the type of material used for filling lumen: Group 1-MTA Flow and Group 2-BD. Each group was again divided into four subgroups (n = 10) based on the duration of exposure to storage media: (a) 3 days in PBS, (b) 3 days in BABS, (c) 3 days in BABS followed by 30 days in PBS, and (d) 33 days in PBS. POBS was then measured using the universal strength testing machine. Statistical Analysis Used: Statistical analysis was performed with one-way analysis of variance and post hoc test using SPSS software version 23.0. Results: Group 1b and 2b showed significantly lower bond strength values. No significant difference was observed between Group 1b and Group 1c (P > 0.05), whereas highly significant POBS values were observed between Group 2b and Group 2c (P = 0.000). Among all the tested groups, Group 2d showed the highest POBS values. Conclusion: On storage in PBS after acid challenge, BD attained the highest POBS values while no significant difference was observed in MTA Flow.


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