Can composition and preheating improve infiltrant characteristics and penetrability in demineralized enamel?

Gaglianone, Lívia Aguilera; Pfeifer, Carmem S.; Mathias, Caroline; Puppin-Rontani, Regina Maria; Marchi, Giselle Maria

doi:10.1590/1807-3107bor-2020.vol34.0099

Cited by 10 publications

(28 citation statements)

References 30 publications

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“…The fact that ethanol negatively affected the mechanical properties, favoring the dilution of a polymer network under formation, was also confirmed in a previous study [30]. For a TEGDMA/Et-OH mixture (90:10) (at 25 • C), it was reported, in Gaglianone's study, a flexural strength value of 37.2 ± 8.8 MPa [24]. For Icon (with TEGDMA in its composition), a flexural strength of 58.8 MPa, as in present study, and a modulus of elasticity of 1.3 GPa was reported.…”

Section: Discussionsupporting

confidence: 72%

“…The conversion values previously reported for resins varied between 55.0% and 75.0%, and the results of a previous study showed for the Icon infiltrant resin a high DC of 80.9%, obtained after 40 s of light curing [23]. In another study, however, Gaglianone et al [24] reported a DC (at 25 • C) for Icon of 41.3% (±1.1%).…”

Section: Discussionmentioning

confidence: 82%

“…Gaglianone et al reported in their study [24] the highest flexural strength and modulus of elasticity for a material composed of BisEMA (ethoxylated bisphenol A dimethacrylate)/TEGDMA/HEMA. Therefore, a composition based on monomers that can form crosslinks between chains can ensure a consolidation of the polymer network, thereby improving the general properties of the material.…”

Section: Discussionmentioning

confidence: 93%

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Development of New Experimental Dental Enamel Resin Infiltrants—Synthesis and Characterization

et al. 2022

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The aim of the present study was to obtain experimental infiltration materials, intended for the treatment of dental white spots, and to investigate them. Two series of infiltrants (P1–P6)/(P1F–P6F) were obtained, based on different monomer mixtures, without/with glass filler (with fluoride release ability). Each infiltrant from the second series contained the same amount of glass powder, and each infiltrant from the (P–PF) group contained the same resin composition. The characteristics of the experimental infiltrants were investigated by degree of conversion (DC), mechanical strength, water sorption (WS), and fluoride release, in addition to residual monomer for (P1F–P6F) infiltrants. The results were compared with those obtained for commercial Icon infiltrant. For the experimental infiltrants, without/with filler, the recorded DC was in the range of 58.27–89.70%/60.62–89.99%, compared with Icon (46.94%) 24 h after polymerization. The release of fluoride depends on the permeability of the polymer matrix, with respect to the water sorption, which may help to diffuse ions in the storage medium but which can also influence the release of residual monomers. The highest flexural strengths were recorded for the (TEGDMA/HEMA/Bis-GMA) infiltrants (133.94 ± 16.389 MPa/146.31 ± 7.032 MPa). The best experimental infiltrants were P2 and P2F (Bis-GMA/HEMA/TEGDMA).

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Section: Discussionsupporting

confidence: 72%

Section: Discussionmentioning

confidence: 82%

Section: Discussionmentioning

confidence: 93%

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Development of New Experimental Dental Enamel Resin Infiltrants—Synthesis and Characterization

et al. 2022

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“…This may have been associated with the fact that the composition of the icon is based on the monomer TEGDMA only (according to the manufacturer), which confers greater fluidity and lower contact angle on the product compared to the characteristics of the experimental infiltrant. These properties are considered important for a greater degree of penetration of the product [9,21]. Resin materials with a lower contact angle are known to be more likely to penetrate the porous body of the carious lesion [10].…”

Section: Discussionmentioning

confidence: 99%

Roughness and Microhardness of Demineralized Enamel Treated with Resinous Infiltrants and Subjected to an Acid Challenge: An in vitro Study

Cerqueira¹,

Damasceno²,

Pedreira³

et al. 2023

TODENTJ

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Background: Resinous infiltrating has proven effective in arresting incipient caries lesions. Objective: This study aimed to assess the penetration depth of an experimental resin-infiltrant (75% - TEGDMA, 25% - Bis-EMA, 1% - EDAB, 0.5% camphorquinone), compare it with commercial infiltrant Icon®, and analyze the surface-roughness and microhardness of the resin-materials infiltrated into tooth specimens, before and after pH cycling. Methods: To assess penetration depth, sound third molar specimens were submitted to ten de-remineralization cycles for incipient carious lesion induction and were then randomly divided into 2 groups (n=3): (I) Experimental Infiltrant (EI) and (II) Commercial Infiltrant Icon (CI). After resin infiltration into specimens, qualitative Confocal Fluorescence Microscopy images were captured. For roughness and microhardness assessment, new specimens were demineralized, then randomly divided into two groups (n=20): (I) Experimental Infiltrant (EI) and (II) Commercial Infiltrant Icon (CI) and submitted to roughness and microhardness readouts at the following time-intervals: (T1) sound tooth, (T2) white-spot caries lesion, (T3) resin material that infiltrated, and (T4) resin material that infiltrated and was exposed to pH-cycling. In statistical analyses, generalized linear models of repeated measures in time were applied, with a significance level of 5%. Results: The experimental infiltrant penetrated the carious lesion and exhibited lower roughness values after its application, even after pH cycling, similar to the CI. The microhardness value of the EI group was significantly lower in the last three-time intervals evaluated compared to CI. Conclusion: Experimental resin infiltrant was efficient in penetrating white spot lesions and reducing surface roughness; however, it did not increase surface microhardness.

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“…This result can be explained by the components present in the infiltrant, since the type of monomer and its structure are related to the water sorption level of the material, which helps in staining the surface and consecutive color change. 24,34,35 In addition, the alcohol present in mouthwashes and dyes present in the composition of dentifrices and mouthwashes has an influence on the staining of composite resins as a consequence of water absorption, affecting appearance. 36 Although some dentifrices used in this study claim to have whitening potential, it is important to note that there were no differences in staining between them and a control dentifrice (MPA), which has no whitening principle.…”

Section: Discussionmentioning

confidence: 99%

Effect of whitening dentifrices and mouthwashes on color and surface roughness of resin-infiltrated enamel

Simões¹,

Pedreira²,

Damasceno³

et al. 2023

Braz. J. Develop.

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The aim of this study was to evaluate the influence of whitening dentifrices and mouthwashes on color change (ΔE) and surface roughness (Ra) of resin-infiltrated enamel. The specimens were demineralized, infiltrated with Icon®️ and grouped according to the dentifrices to be used, after they were subjected to 30,000 brushing cycles. The groups were further subdivided according to the mouthwash type and were then submitted to immersion cycles for 45 days. Ra was evaluated in a rugosimeter, surface morphology analysis was performed using a scanning electron microscope (SEM) and ΔE was evaluated using a spectrophotometer 3 times (at: T0 - initial, T1 - after brushing, T2 - after mouthwash). Analyses were performed using the SPSS 2.0 software, with a significance level of 5%, except for SEM analyses, which were evaluated only aualitatively. For Ra tests, Kruskal Wallis and Dunn's analyses as well as Mann-Whitney and Wilcoxon’s test were applied. For color tests, one-way (Brushing) and two-way (mouthwashes/toothpaste) factor ANOVA were used. Ra decreased after the brushing cycles and the use of mouthwashes did not produce significant changes on the surface. SEM images also demonstrated a decrease in Ra. ΔE for all groups was above the levels of acceptability and perceptibility while there was no difference in ΔE among the tested groups. In conclusion, the dentifrices used caused a reduction in surface roughness, suggesting a degradation of the material, unlike the mouthwashes, which did not produce significant differences. Regarding color, all samples were above the level of clinical acceptability.

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Can composition and preheating improve infiltrant characteristics and penetrability in demineralized enamel?

Cited by 10 publications

References 30 publications

Development of New Experimental Dental Enamel Resin Infiltrants—Synthesis and Characterization

Development of New Experimental Dental Enamel Resin Infiltrants—Synthesis and Characterization

Roughness and Microhardness of Demineralized Enamel Treated with Resinous Infiltrants and Subjected to an Acid Challenge: An in vitro Study

Effect of whitening dentifrices and mouthwashes on color and surface roughness of resin-infiltrated enamel

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