![]() Effect of carbonated beverages, coffee, sports and high energy drinks, and bottled water on the in vitro erosion characteristics of dental enamel. Function of MAPK and downstream transcription factors in monomer-induced apoptosis. Flexural Stresses In Beams (Derivation of Bending Stress Equation) General: A beam is a structural member whose length is large compared to its cross sectional area which is loaded and supported in the direction transverse to its axis. Krifka S., Hiller K.-A., Bolay C., et al. High strength re-mineralizing, antibacterial dental composites with reactive calcium phosphates. ![]() The Journal of the American Dental Association. Survival and reasons for failure of amalgam versus composite posterior restorations placed in a randomized clinical trial. Occlusal wear of teeth and restorative materials: a review of classification, etiology, mechanisms of wear, and some aspects of restorative procedures. No significant differences were reported between distilled water and acidic drink immersion for all other materials tested both for flexural and for elastic modulus values.Įven if nanofilled composite showed highest results, acidic drink immersion significantly reduced flexural values.ĭahl B. Data were submitted to statistical analysis.Īfter distilled water immersion, nanofilled composite showed the highest value of both flexural strength and elastic modulus, but its flexural values decreased after acidic drink immersion. Flexural strength and elastic modulus were measured for each material with an Instron Universal Testing Machine. Results: After distilled water immersion, nanofilled composite showed the highest value of both flexural strength and elastic modulus, but its flexural values decreased after acidic drink. Data were submitted to statistical analysis. Thirty specimens of each esthetic restorative material were divided into 3 subgroups (n=10): specimens of subgroup 1 were used as control, specimens of subgroup 2 were immersed in 50 ml of Coca Cola for 1 week, and specimens of subgroup 3 were immersed in 50 ml of Coca Cola for 1 month. Flexural strength and elastic modulus were measured for each material with an Instron Universal Testing Machine. Nine different composites were tested: nanofilled (Filtek Supreme XTE, 3M ESPE), microfilled hybrid (G-ænial, GC Corporation), nanohybrid Ormocer (Admira Fusion, Voco), microfilled (Gradia Direct, GC Corporation), microfilled hybrid (Essentia, GC Corporation), nanoceramic (Ceram.X Universal, Dentsply De Trey), supranano spherical hybrid (Estelite Asteria, Tokuyama Dental Corporation), flowable microfilled hybrid (Gradia Direct Flo, GC Corporation), and bulk fill flowable (SureFil SDR flow, Dentsply De Trey). The purpose of the present study was to investigate mechanical properties of different esthetic restorative materials after exposure to acidic drink. Acidic beverages, such as soft drinks, can produce erosion of resin composites.
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