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Plastic Restorations for Primary Teeth
Published in M S Duggal, M E J Curzon, S A Fayle, K J Toumba, A J Robertson, Restorative Techniques in Paediatric Dentistry, 2021
M S Duggal, M E J Curzon, S A Fayle, K J Toumba, A J Robertson
Composite resins can be used in larger occlusal or minimal two-surface restorations, but low success rates have been reported in primary teeth. In order to improve the mechanical properties of glass ionomers, light-cured resin components were incorporated to give glass ionomer resin-modified cements and ‘poly acid modified resin composites’ or ‘Compomers’. Compomers combine the advantages of both composites and glass ionomers and have gained credibility recently with clinicians. Long-term studies have shown them to be as durable as amalgam for minimal proximal restorations in primary teeth.
Antibacterial, pH Neutralizing, and Remineralizing Fillers in Polymeric Restorative Materials
Published in Mary Anne S. Melo, Designing Bioactive Polymeric Materials for Restorative Dentistry, 2020
Abdulrahman A. Balhaddad, Maria S. Ibrahim, Michael D. Weir, Hockin H.K. Xu
Early studies in this field focused on using antibacterial or remineralization fillers as a component in the resin composite system. Fluoride-containing restorations are the most popular restorations to be used as a remineralizing approach (Balhaddad et al. 2019b; Cheng et al. 2015). Glass ionomer and resin-modified glass ionomer (RMGI) restorations can release fluoride ions to neutralize the acidity produced by bacteria, and also remineralize the demineralized adjacent tooth structure. The burst release of fluoride can last only for three days, then the amount of release becomes very low, and so the material needs to be recharged (Cabral et al. 2015; Hasan et al. 2019). Likewise, solvent disinfectants were coordinated into composites, including chlorhexidine, triclosan, and antibacterial antibiotics. Their significant limitation is that a large amount of the material is released rapidly, rendering the effect of such material to be short. Also, the release of agents may compromise the mechanical properties of the resin composites (Balhaddad et al. 2019b; Cheng et al. 2015).
Combining Whitening Techniques and Minimally Invasive Treatments
Published in Linda Greenwall, Tooth Whitening Techniques, 2017
A protective barrier is placed over the gutta-percha to prevent the whitening gel from escaping into the root canal system at the CEJ. Conventional glass ionomer or a resin-modified glass ionomer can be used as a barrier (Settembrini et al. 1997).
Assessment of genotoxicity of glass ionomer cements: a systematic review
Published in Critical Reviews in Toxicology, 2022
Ingra Tais Malacarne, Wilton Mitsunari Takeshita, Daniel Vitor de Souza, Marcia Regina Nagaoka, Odair Aguiar Jr., Ana Claudia Muniz Renno, Daniel Araki Ribeiro
Three studies separately evaluated powders and liquids of glass ionomer materials, resin material, and modified glass ionomer materials. For example, the study by Angelieri et al. (2012), which analyzed powder and liquid separately, observed that the conventional glass ionomer powder was unable to induce genetic damage regardless of the dose evaluated. On the other hand, the resin and modified glass ionomer pastes showed an increase in DNA damage. Ribeiro et al. (2006a) also evaluated separately the powder and liquid of the compomers, without showing harmful response to the DNA, but with cytotoxicity in the most concentrated liquid dilutions of the tested materials. In the same year, Ribeiro et al. (2006b) observed in their samples a dose-dependent genotoxic behavior of the liquid dilution, and the tested powder of each material showed no genotoxic damage. Following the rationale, both tested powders and liquids showed a level of cytotoxicity.
The use of different adhesive filling material and mass combinations to restore class II cavities under loading and shrinkage effects: a 3D-FEA
Published in Computer Methods in Biomechanics and Biomedical Engineering, 2021
P. Ausiello, S. Ciaramella, A. De Benedictis, A. Lanzotti, J. P. M. Tribst, D. C. Watts
A previous report (Kowalczyk 2009) confirmed the need of the resin based composite layering technique to reduce the polymerization stresses in large cavities. These findings support our results considering the influence of the restorative material stiffness and layering to restore different volumes of the lost dental tissues. This statement is in accord with a previous investigation (Aggarwal et al. 2014) that suggested a possible advantage of a liner material to reduce leakage in class II restorations. In this case, the use of glass ionomer materials should be considered (Aggarwal et al. 2014; Ausiello et al. 2019; Han and Park 2018).
Retrospective physical dosimetry in the Czech Republic: an overview of already established methods and recent research
Published in International Journal of Radiation Biology, 2022
Daniela Ekendahl, Zina Čemusová, Dan Reimitz, Jakub Vávra
Dental ceramics include various glass-based materials, crystalline based materials with glass fillers and polycrystalline solids. The main components of these materials usually are quartz, alumina and other oxides (Shenoy and Shenoy 2010). Dental cement fillings are usually glass-ionomer materials, in which quartz represents one of the main components (Sidhu and Nicholson 2016). Importantly, the various crystalline compounds are radiation sensitive and may exhibit luminescence (Veronese et al. 2010).