Badra Hussain1, Minh Khai Le Thieu1, Gaute Floer Johnsen1, Janne Elin Reseland1, Håvard J Haugen2. 1. Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, PO Box 1109, Blindern, NO-0376 Oslo, Norway. 2. Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, PO Box 1109, Blindern, NO-0376 Oslo, Norway. Electronic address: h.j.haugen@odont.uio.no.
Abstract
OBJECTIVE: Dentists are facing a myriad of new CAD/CAM product for dental filling therapies. Are the new materials any worthwhile using? Are they succeeding the standard filling materials? Here we compare for the first time the new resin-composite blocks (RCBs) with conventional materials (Filtek Z250 and Tetric EvoCeram). METHODS: The material were tested for residual monomer elution by HPLC, thermogravimetric analysis (TG) was used to determine the percentage of fillers by weight, hardness was evaluated by Vickers method, morphology of fillers and distribution in the matrix were examined by scanning electron microscopy (SEM), elemental analysis for elemental determination of the filler particles was performed by energy-dispersive X-ray spectroscopy (EDX) cytotoxicity using human gingival fibroblasts and an epithelial cell line. RESULTS: The RBC outperformed conventional composite regarding mechanical characteristics (hardness) and monomer eluation, but showed some worrisome results regarding cytotoxicity. SIGNIFICANCE: The cost benefit is not in favour of RBCs in comparison to conventional composites, as the cytotoxicity was found higher for RBCs.
OBJECTIVE: Dentists are facing a myriad of new CAD/CAM product for dental filling therapies. Are the new materials any worthwhile using? Are they succeeding the standard filling materials? Here we compare for the first time the new resin-composite blocks (RCBs) with conventional materials (Filtek Z250 and Tetric EvoCeram). METHODS: The material were tested for residual monomer elution by HPLC, thermogravimetric analysis (TG) was used to determine the percentage of fillers by weight, hardness was evaluated by Vickers method, morphology of fillers and distribution in the matrix were examined by scanning electron microscopy (SEM), elemental analysis for elemental determination of the filler particles was performed by energy-dispersive X-ray spectroscopy (EDX) cytotoxicity using human gingival fibroblasts and an epithelial cell line. RESULTS: The RBC outperformed conventional composite regarding mechanical characteristics (hardness) and monomer eluation, but showed some worrisome results regarding cytotoxicity. SIGNIFICANCE: The cost benefit is not in favour of RBCs in comparison to conventional composites, as the cytotoxicity was found higher for RBCs.
Authors: Jefferson Ricardo Pereira; Hugo Alberto Vidotti; Lindomar Corrêa Júnior; Alef Vermudt; Mauro de Souza Almeida; Saulo Pamato Journal: Saudi Dent J Date: 2019-12-05
Authors: Mihaela Pantea; Alexandra Ripszky Totan; Marina Imre; Alexandru Eugen Petre; Ana Maria Cristina Țâncu; Cristian Tudos; Alexandru Titus Farcașiu; Mihai Butucescu; Tudor Claudiu Spînu Journal: Materials (Basel) Date: 2021-12-29 Impact factor: 3.623
Authors: Aleksandra Skorulska; Paweł Piszko; Zbigniew Rybak; Maria Szymonowicz; Maciej Dobrzyński Journal: Materials (Basel) Date: 2021-03-24 Impact factor: 3.623