Influence of Photoactivation Source on Restorative Materials and Enamel Demineralization

Popoff, Josiane Marques de Sena; Rodrigues, José Augusto; Aras, Wanessa Maria de Freitas; Cassoni, Alessandra

doi:10.1089/pho.2013.3677

Cited by 3 publications

(2 citation statements)

References 28 publications

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“…In order to overcome these limitations, the resin-modified GIC (RMGIC) was developed. In addition to the acid-base reaction, RMGICs have a polymerization reaction as they have resin monomers in their composition [5,6]. In most cases, this polymerization is photo-initiated.…”

Section: Introductionmentioning

confidence: 99%

Glass Ionomer Cement Modified by Resin with Incorporation of Nanohydroxyapatite: In Vitro Evaluation of Physical-Biological Properties

Genaro¹,

Anovazzi²,

Hebling³

et al. 2020

Nanomaterials

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Resin-modified glass ionomer cement (RMGIC) has important properties. However, like other restorative materials, it has limitations such as decreased biocompatibility. The incorporation of nanoparticles (NP) in the RMGIC resulted in improvements in some of its properties. The aim of this study was to evaluate the physical-biological properties of RMGIC with the addition of nanohydroxyapatite (HANP). Material and Methods: Vitremer RMGIC was used, incorporating HANP by amalgamator, vortex and manual techniques, totaling ten experimental groups. The distribution and dispersion of the HANP were evaluated qualitatively by field emission scanning electron microscope (SEM-FEG). The evaluation of image porosity (SEM-FEG) with the help of imageJ. Cell viability 3-(4,5-dimethylthiazol-2yl)-2,5-diphenyl tetrazoline bromide (MTT) and cell morphology analyses were performed on MDPC-23 odontoblastoid cells at 24 and 72 h. Results: It was possible to observe good dispersion and distribution of HANP in the samples in all experimental groups. The incorporation of 5% HANP into the vortex stirred RMGIC resulted in fewer pores. The increase in the concentration of HANP was directly proportional to the decrease in cytotoxicity. Conclusions: It is concluded that the use of a vortex with the incorporation of 5% HANP is the most appropriate mixing technique when considering the smallest number of pores inside the material. A higher concentration of HANP resulted in better cell viability, suggesting that this association is promising for future studies of new restorative materials.

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Section: Introductionmentioning

confidence: 99%

Glass Ionomer Cement Modified by Resin with Incorporation of Nanohydroxyapatite: In Vitro Evaluation of Physical-Biological Properties

Genaro¹,

Anovazzi²,

Hebling³

et al. 2020

Nanomaterials

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show abstract

“…Furthermore, the resin-modified GIC (RMGIC) was developed to overcome early moisture sensitivity and lower mechanical properties associated with conventional GICs [8,9]. In addition to the acid-base reaction in the presence of water, photoinduced polymerization reaction occurs in RMGICs during setting, as they contain resin monomers [10].…”

Section: Introductionmentioning

confidence: 99%

Effects of Incorporation of Marine Derived Hydroxyapatite on the Microhardness and Surface Roughness of Two Glass-ionomer Cements

Bilić-Prcić

Vural

Gürgan

et al. 2020

Proceedings of 1st International Electronic Conference on Applied Sciences

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Background: The aim of this study was to evaluate the effects of incorporation of hydroxyapatite (HA) derived from cuttlefish bone on the microhardness (MH) and surface roughness (SR) of chemically cured, Fuji IX GP Extra and resin-modified glass-ionomer cement, Fuji II LC (GC Corporation, Tokyo, Japan). Methods: There were 4 groups for each GIC: one group without the addition of HA particles and three experimental groups with the addition of 2, 5 and 10 wt% HA. A sectional Teflon molds (8 mm diameter × 2 mm deep) were used to prepare 10 samples per group (n = 80). The specimens were stored in distilled water at 37 °C for 7 days before testing. The SR was measured using a contact type profilometer and the MH was measured with a Vickers micro-hardness tester at a load of 980 g for 15 s. Statistical analysis was performed using one-way ANOVA with Tukey post-hoc test. Results and Conclusion: Fuji II modified with 10 wt% HA showed most favorable results with respect to MH. Comparison of materials with respect to SR showed that there is a difference between them (p < 0.0001; ANOVA test). Fuji II and Fuji IX modified with HA showed higher surface roughness values which should be considered.

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Laser-assisted prevention of enamel caries: a 10-year review of the literature

2019

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Influence of Photoactivation Source on Restorative Materials and Enamel Demineralization

Cited by 3 publications

References 28 publications

Glass Ionomer Cement Modified by Resin with Incorporation of Nanohydroxyapatite: In Vitro Evaluation of Physical-Biological Properties

Glass Ionomer Cement Modified by Resin with Incorporation of Nanohydroxyapatite: In Vitro Evaluation of Physical-Biological Properties

Effects of Incorporation of Marine Derived Hydroxyapatite on the Microhardness and Surface Roughness of Two Glass-ionomer Cements

Laser-assisted prevention of enamel caries: a 10-year review of the literature

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