Affiliation:
1. ÇUKUROVA ÜNİVERSİTESİ, DİŞ HEKİMLİĞİ FAKÜLTESİ
2. Çukurova Üniversitesi Diş Hekimliği Fakültesi
Abstract
Objectives: The main objective of the study was to evaluate and compared the surface roughness and microhardness of three bulk-fill (ACTIVA Bioactive Restorative, SonicFill 2 SingleFill and SDR Flow Plus) and one conventional (G-aenial Posterior) composite resin at different depths.
Materials and Methods: Eighty disc-shaped composite resins (6mm diameter, 2mm height) were polymerized as recommended and then subjected to the appropriate finishing and polishing procedure. Transparent strips were placed between the samples before polymerization to evaluate the hardness at different depths (0-2mm and 2-4mm) of the bulk-fill composites. Microhardness was evaluated with a Vickers hardness tester and roughness was evaluated with an optical profilometer. The ANOVA and Tukey multiple comparisons were performed for the statistical evaluation of microhardness and ANOVA was performed for roughness.
Results: No statistically significant difference was determined between the composite materials in respect of surface roughness (p=0.336). It was generally observed that as the layer thickness increased in all the materials, the hardness values decreased (p
Reference34 articles.
1. 1. Roeters JJ, Shortall AC, Opdam NJ. Can a single composite resin serve all purposes? Br Dent J. 2005;199(2):73-79.
2. 2. A. Benetti, C. Havndrup-Pedersen, D. Honor, M. Pedersen, and U. Pallesen. Bulk-fill resin composites: polymerization contraction, depth of cure, and gap formation. Operative Dentistry. 2015;40 (2):190-200.
3. 3. K.-H. Kim, J. L. Ong, O. Okuno. The effect of filler loading and morphology on the mechanical properties of contemporary composites. The Journal of Prosthetic Dentistry. 2002;87(6):642-649.
4. 4. Silva de Assis, F., Lima, L., Nogueira, S., Rodrigues Tonetto, M., Bhandi, S. H., Souza Pinto, S. C., ... & Coelho Bandeca, M. Evaluation of Bond Strength, Marginal Integrity, and Fracture Strength of Bulk-vs Incrementally-filled Restorations. Journal of Adhesive Dentistry 2016; 18(4):317-323.
5. 5. Ugurlu, M., Sari, F. A 3-year retrospective study of clinical durability of bulk-filled resin composite restorations. Restorative Dentistry & Endodontics. 2022; 47(1):e5.