Interactions between Oral Bacteria and Antibacterial Polymer-Based Restorative Materials
Mary Anne S. Melo in Designing Bioactive Polymeric Materials for Restorative Dentistry, 2020
Resin-modified glass-ionomer cements contain the traditional ion-leachable glass powder associated with water-soluble monomers (2-hydroxyethyl methacrylate, HEMA) and a polymeric acid, that combined with a light-sensitive activator-initiator system, results in traditional free-radical addition polymerization reactions. Even though these materials were initially designed to be used as liners and bases, other applications in restorative dentistry (such as core build-ups) have also been reported. Even though several reports have demonstrated the antibacterial and bacteriostatic effects of fluoride, it has been recently stated that fluoride-releasing restorative materials cannot sustain the minimum fluoride concentration (>10 ppm) to reduce the viability of cells within biofilms.[144]
The Effect of Whitening on Restorative Materials
Linda Greenwall in Tooth Whitening Techniques, 2017
It was observed that during external whitening with 30% hydrogen peroxide or 10–35% carbamide peroxide gel, higher levels of hydrogen penetrated into the pulp chamber in teeth with restorations placed in enamel as compared with sound teeth (Gökay et al. 2000a, 2000b, Camargo et al. 2007). This was true for restorations fabricated with composite materials, polyacid-modified composite resins, or resin-modified glass ionomer cements. Furthermore, it was shown that higher- concentration carbamide peroxide gels (35%) led to distinctly higher levels of peroxide in the pulp chamber compared with low-concentration (10%) gels (Benetti et al. 2004).
Stock control
Raj Rattan, Kevin Lewis, Raj Rattan in Making Sense of Dental Practice Management, 2017
The powder of glass ionomer cements needs protection against humidity in the air. Bottles of powder are usually labelled with clear instructions to close the lid tightly and also contain pellets of moisture-absorbent material to reduce contamination of the powder itself. Despite this, it is a common finding in practice that the final 10% of powder in the bottle lacks the performance and mixing characteristics of the powder used when the bottle is first opened. This is usually due to contamination.
Analysis of laboratory adhesion studies in eroded enamel and dentin: a scoping review
Published in Biomaterial Investigations in Dentistry, 2021
Madalena Belmar da Costa, António H. S. Delgado, Teresa Pinheiro de Melo, Tomás Amorim, Ana Mano Azul
Regarding the choice of adhesives in the primary studies that were identified, most authors used etch-and-rinse adhesives (16/29 − 55%), followed by self-etch adhesives (13/29 − 45%) and finally universal adhesives (10/29 − 34%) – Figure 2. Two studies evaluated glass ionomer cements (7%), and one study evaluated a luting cement (3%). The interventions investigated in primary studies included: testing of matrix metalloproteinases (MMP) inhibitor strategies, comparison of restorative materials and application modes, remineralization strategies and surface pretreatments.
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
In the last decades, conventional and modified glass ionomer cements have been frequently used in dentistry because they show advantages compared to other dental materials, such as chemical adhesion and fluoride release. However, information on the genotoxic potential of these materials is scarce in the literature (Ribeiro et al. 2006; Bakopoulou et al. 2009). Since the glass ionomer cements has some metals in its composition that stay in contact with the oral tissues for long periods, they can cause a biological risk (Ribeiro et al. 2006a, b; Gavić et al. 2019).
Fluoride exchange by glass-ionomer dental cements and its clinical effects: a review
Published in Biomaterial Investigations in Dentistry, 2023
John W. Nicholson, Sharanbir K. Sidhu, Beata Czarnecka
Glass-ionomer cements, formally called glass polyalkenoate cements, both conventional and resin-modified, have a variety of uses in dentistry [1,2]. These include dental restoratives, fissure sealants, luting cements [3] and adhesives for orthodontic brackets [4].
Related Knowledge Centers
- Dental Cement
- Dental Material
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- Orthodontics
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- Luting Agent
- Ionomer
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