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ORIGINAL ARTICLE
Year : 2019  |  Volume : 9  |  Issue : 3  |  Page : 154-158

Effect of different finishing and polishing systems on the surface roughness of resin composite and enamel: An In vitro profilometric and scanning electron microscopy study


1 Department of Conservative Dentistry and Endodontics, Adesh Institute of Dental Sciences and Research, Bathinda, Punjab, India
2 Department of Conservative Dentistry and Endodontics, Subharti Dental College, Meerut, Uttar Pradesh, India
3 Department of Conservative and Endodontics, Subharti Dental College, Meerut, Uttar Pradesh, India
4 Department of Pedodontics and Preventive Dentistry, Private Practioner, Bathinda, Punjab, India

Correspondence Address:
Dr. Karan Bansal
Senior Lecturer, Department of Conservative Dentistry and Endodontics, Adesh Institute of Dental Sciences and Research, Bathinda, Punjab
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijabmr.IJABMR_11_19

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Aim: The aim is to compare and evaluate the different finishing and polishing systems for the change in surface roughness of resin composites and enamel. Materials and Methods: To conduct the study, 30 extracted human maxillary central incisors were selected, decoronated, and molded in self-cure acrylic molds. A box-shaped cavity of dimensions 3 mm × 3 mm × 2 mm was prepared in all the teeth. A nanohybrid composite resin (Filtek Z250) was then used to restore the prepared cavities. Thirty samples were divided into two groups, control group (Group A, n = 10) and experimental group (Group B, n = 20). The samples in Group A were cured through the Mylar matrix. The experimental group, i.e., Group B was divided into two subgroups, i.e., Subgroup BX, n = 10 in which Sof-Lex polishing system was used for polishing the tooth surface and Subgroup BF, n = 10 in which Shofu composite polishing system was used. The mean surface roughness (Ra in μm) of the composite restoration as well as for the enamel surface of all the samples before and after polishing was measured with a contact profilometer, and the values were correlated with scanning electron microscopy. Results: The statistical analysis was carried out using paired t-test. The results exhibited a significant decrease in the surface roughness of the resin composite and enamel surface irrespective of the finishing and polishing system used. The mean surface roughness values demonstrated by Mylar matrix was the lowest followed by Sof-Lex polishing system. Shofu polishing system demonstrated the highest surface roughness values. Conclusion: Finishing and polishing of composite restoration can achieve a surface roughness similar to that of enamel. Involvement of marginal enamel in finishing and polishing procedures carried out for composite restoration results in smoother enamel surface.


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