Comparative evaluation of mechanical properties of three different direct posterior restorative materials: An in vitro study
Shrutika Somani1, Rajesh Shetty1, Karan Bhargava1, Abhilasha Bhawalkar1, Tanaya Kumar2, Pooja Newase1, Gargi Sarode3
1 Department of Conservative Dentistry and Endodontics, Dr. D.Y. Patil Dental College and Hospital, Dr. D.Y. Patil Vidyapeeth (Deemed to be University), Pimpri, Pune, Maharashtra, India
2 Graduate student, Department Of Endodontics, University of Detroit Mercy, Michigan, USA
3 Department of Oral Pathology and Microbiology, Dr. D.Y. Patil Dental College and Hospital, Dr. D.Y. Patil Vidyapeeth (Deemed to be University), Pimpri, Pune, Maharashtra, India
Department of Conservative and Endodontics, Dr. D.Y. Patil Dental College and Hospital, Dr. D.Y. Patil Vidyapeeth (Deemed to be University), Sant Tukaram Nagar, Pimpri, Pune - 411 018, Maharashtra
Source of Support: None, Conflict of Interest: None
Aim: The aim of this study was to evaluate and compare the compressive strength, Vickers microhardness number, and wear resistance of amalgam (DPI), Filtek Z350 nanohybrid (3M ESPE), and Zirconomer (Shofu) restorative materials after 24 h and 3 months. Methodology: The restorative materials were divided into Zirconomer (Group I), Filtek Z350 (Group II), and amalgam (Group III). These materials were placed in cylindrical molds to prepare the specimens. The specimens were stored in distilled water at 37°C. The specimens were tested at 24 h and 3 months for compressive strength, wear resistance, and microhardness. Results: Group I showed significantly less maximum load (N) and compression strength (MPa) when compared with Group III (control) and Group II (P < 0.01). There was no significant difference in microhardness between the three groups. Group I showed significantly more wear (weight loss [g]) and wear (weight loss [%]) when compared with Group III (control) and Group II. Conclusion: The study concludes that amalgam and nanohybrid composite performed better than Zirconomer at the end of 24 h and 3 months.