Year : 2019 | Volume
: 22 | Issue : 4 | Page : 371--375
The comparative evaluation of depth of cure of bulk-fill composites – An in vitro study
Nidhi Aggarwal, Anjula Jain, Hitesh Gupta, Aman Abrol, Charanjeet Singh, Tenzin Rapgay
Department of Conservative Dentistry and Endodontics, Himachal Institute of Dental Sciences, Paonta Sahib, HP, India
Introduction: Resin-based composites (RBCs), as restorative dental materials, have given a new dimension to conservative and esthetic dentistry. The objective of the present study is to evaluate and compare the depth of cure of RBC's for posterior use: Sculptable bulk-fill composite – Tetric N-Ceram bulk fill (TNCBF), Flowable bulk-fill composites-TetricEvoflow bulk fill (TEFBF), Surefil SDR bulk fill (SDRBF), Dual cure bulk fill-Fill-Up (FDCBF) with conventional RBC-Esthet-X flow (EXF) and Filtex Z250 (FZ).
Materials and Methods: A standardized polyacrylic mold was bulk filled with each of the six composites and light-cured for 20 s, followed by 24 h storage in water. The surface hardness was measured on the top and the bottom by recording Vickers hardness number by Vickers hardness indenter.
Results: The mean bottom surface hardness value (HV) of SDR and TEFBF exceeded 80% of the top surface HV (HV-80%). Low viscosity bulk-fill composites (SDR and Tetric Evoflow) were properly cured in 4-mm increments. The TNCBF, high-viscosity composite, and Fill-Up, dual-cure bulk fill were not sufficiently cured in 4-mm increments.
Conclusion: With increase in incremental thickness, HV decreased for the conventional resin composite but generally remained constant for the bulk-fill resin composites.
Dr. Anjula Jain
168/I, Kalindi Enclave, Canal Road, Shamsherpur, Paonta Sahib, Sirmour - 173 025, Himachal Pradesh
|How to cite this article:|
Aggarwal N, Jain A, Gupta H, Abrol A, Singh C, Rapgay T. The comparative evaluation of depth of cure of bulk-fill composites – An in vitro study.J Conserv Dent 2019;22:371-375
|How to cite this URL:|
Aggarwal N, Jain A, Gupta H, Abrol A, Singh C, Rapgay T. The comparative evaluation of depth of cure of bulk-fill composites – An in vitro study. J Conserv Dent [serial online] 2019 [cited 2020 May 27 ];22:371-375
Available from: http://www.jcd.org.in/article.asp?issn=0972-0707;year=2019;volume=22;issue=4;spage=371;epage=375;aulast=Aggarwal;type=0