Restorative Dentistry & Endodontics

Research Article

Effect of organic acids in dental biofilm on microhardness of a silorane-based composite: Sedighe Sadat Hashemikamangar, Seyed Jalal Pourhashemi, Mohammad Talebi, Nazanin Kiomarsi, Mohammad Javad Kharazifard; Restor Dent Endod 2015;40(3):188-194. Published online June 2, 2015; DOI: https://doi.org/10.5395/rde.2015.40.3.188

Objectives

This study evaluated the effect of lactic acid and acetic acid on the microhardness of a silorane-based composite compared to two methacrylate-based composite resins.

Materials and Methods

Thirty disc-shaped specimens each were fabricated of Filtek P90, Filtek Z250 and Filtek Z350XT. After measuring of Vickers microhardness, they were randomly divided into 3 subgroups (n = 10) and immersed in lactic acid, acetic acid or distilled water. Microhardness was measured after 48 hr and 7 day of immersion. Data were analyzed using repeated measures ANOVA (p < 0.05). The surfaces of two additional specimens were evaluated using a scanning electron microscope (SEM) before and after immersion.

Results

All groups showed a reduction in microhardness after 7 day of immersion (p < 0.001). At baseline and 7 day, the microhardness of Z250 was the greatest, followed by Z350 and P90 (p < 0.001). At 48 hr, the microhardness values of Z250 and Z350 were greater than P90 (p < 0.001 for both), but those of Z250 and Z350 were not significantly different (p = 0.095). Also, the effect of storage media on microhardness was not significant at baseline, but significant at 48 hr and after 7 day (p = 0.001 and p < 0.001, respectively). Lactic acid had the greatest effect.

Conclusions

The microhardness of composites decreased after 7 day of immersion. The microhardness of P90 was lower than that of other composites. Lactic acid caused a greater reduction in microhardness compared to other solutions.

Citations

Citations to this article as recorded by

Effect of hydroelectrolytic beverages on the roughness and microhardness of bulk fill resin composites
Renata Siqueira Scatolin, Caio Castro Grigoletto, Laura Nobre Ferraz, Rafael Pino Vitti
Brazilian Journal of Oral Sciences.2025; 24: e254003. CrossRef
Investigating the effect of three carbonated drinks on tooth enamel roughness and microhybrid composite
Sara Akbari Fard, Saeed Nemati Anaraki, Haleh Kazemi -Yazdi, Mahsa Qenaat
journal of research in dental sciences.2024; 21(3): 174. CrossRef
Evaluating the effect of natural, industrial juices and beverage on orthodontic bonding composite (in-vitro study)
Rusal S Ahmed, Alan I Saleem
Journal of Baghdad College of Dentistry.2023; 35(3): 10. CrossRef
Stoichiometric models of sucrose and glucose fermentation by oral streptococci: Implications for free acid formation and enamel demineralization
Marzieh Mansouri, Evan P. O'Brien, Karabi Mondal, Chien-Chia Chen, James L. Drummond, Luke Hanley, Karl J. Rockne
Dental Materials.2023; 39(4): 351. CrossRef
Effect of mouthwashes on the microhardness of aesthetic composite restorative materials
Noura Abdulaziz Alessa
Anales del Sistema Sanitario de Navarra.2023;[Epub] CrossRef
Evaluation of the Effect of Natural and Industrial Orange Juices and Beverage on Surface Roughness of Orthodontic Bonding Composite
Rusal Saad Ahmed, Alan Issa Saleem
Dental Hypotheses.2022; 13(3): 107. CrossRef
Effects of particle distribution and calculation method on results of nano-indentation technique in heterogeneous nanocomposites-experimental and numerical approaches
M. Heidari, A. Karimzadeh, M.R. Ayatollahi, M.Y. Yahya
International Journal of Solids and Structures.2021; 225: 111054. CrossRef
New Resin-Based Bulk-Fill Composites: in vitro Evaluation of Micro-Hardness and Depth of Cure as Infection Risk Indexes
Marco Colombo, Simone Gallo, Claudio Poggio, Vittorio Ricaldone, Carla Renata Arciola, Andrea Scribante
Materials.2020; 13(6): 1308. CrossRef
Tribological Behavior of Restorative Dental Microcomposites After Exposure to Mouth Acids
A. C. Branco, J. Brito, M. Codorniz, M. Steinhausen, F. Martins, J. Reis, P. Maurício, R. Colaço, A. P. Serro
Tribology Letters.2019;[Epub] CrossRef
Vickers Micro-Hardness of New Restorative CAD/CAM Dental Materials: Evaluation and Comparison after Exposure to Acidic Drink
Marco Colombo, Claudio Poggio, Alessandro Lasagna, Marco Chiesa, Andrea Scribante
Materials.2019; 12(8): 1246. CrossRef
30 Months Clinical Evaluation of Posterior Composite Resin Restorations
Serdar Akarsu, Hüseyin Özgür Özdemir
The Journal of Dentists.2018; 6: 6. CrossRef
Survival and Associated Risk Factors of Selective Caries Removal Treatments in Primary Teeth: A Retrospective Study in a High Caries Risk Population
Ximena C. Melgar, Niek J.M. Opdam, Marcos Britto Correa, Renata Franzon, Flávio Fernando Demarco, Fernando B. Araujo, Luciano Casagrande
Caries Research.2017; 51(5): 466. CrossRef

404 View
3 Download
12 Crossref

First
Prev
Page of 1
Next
Last

Search