Avaliação da microinfiltração marginal e profundidade de penetração dos cimentos de ionômero de vidro utilizados como selantes oclusais

Fracasso, Marina de Lourdes Calvo; Ríos, Daniela; Machado, Maria Aparecida de Andrade Moreira; Silva, Salete Moura Bonifácio da; Abdo, Ruy Cesar Camargo

doi:10.1590/s1678-77572005000300013

Cited by 10 publications

(5 citation statements)

References 14 publications

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“…This technique condenses and ensures penetration of the cement into the pits and fissures 11 . Fracasso, et al 7 (2005), observed that the sealants tested (Delton, Ketac-Molar, Fuji Plus, Vitremer) presented a similar pattern of penetration into the pits and fissures, with no statistically significant difference among the studied groups. The high viscosity GIC's can be compensated by the finger pressure technique, as indicated in the ART approach 11 .…”

Section: Discussionmentioning

confidence: 94%

Evaluation of glass ionomer sealants placed according to the ART approach in a community with high caries experience: 1-year follow-up

et al. 2006

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The aim of this study was to investigate the retention rates and effect on occlusal caries incidence of two glass ionomers used as sealants, placed according to the Atraumatic Restorative Treatment (ART) approach, in a high caries-risk community. A total of 150 newly erupted first molars of 42 schoolchildren, between 6-8 years of age were selected. The teeth were divided into two groups: experimental and control groups. In the experimental group, 76 teeth were sealed using Vidrion R-SS White (conventional GIC) and in the control group, 74 teeth were sealed using ChemFlex–Dentsply (high-viscosity conventional GIC). The sealants were applied by one operator following the "press finger technique", described in the ART-WHO manual. Two calibrated independent examiners carried out the evaluation according to the ART criteria. The intra and inter-examiner agreements were 0.84 and 0.81, respectively. Data were submitted to Mann-Whitney and Chi-square tests (p<0.05). At the 1-year follow-up, 136 (90.7%) sealants were evaluated. In the control group: 28 (41.8%) of the sealants were partially or completely retained, 38 (56.7%) completely lost, and 1 (1.5%) was replaced by another treatment. In the experimental group, 30 (43.5%) of the sealants were partially or completely retained, 38 (55.1%) were clinically scored as complete loss and 1 (1.4%) were replaced by another treatment. Seven sealants in both groups were not evaluated. Secondary caries was not observed in both groups. There was no statistically significant difference between the retention (p=0.49) and effect on caries incidence rates for both groups (p=0.84). The clinical performance of the glass ionomer sealants of both groups was considered satisfactory with a high success rate (98.5%). Although the sealants placed according to the ART approach showed retention rates lower than 50% after 1 year in newly erupted first molars, this approach seems to be appropriate for communities with high caries experience.

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Section: Discussionmentioning

confidence: 94%

Evaluation of glass ionomer sealants placed according to the ART approach in a community with high caries experience: 1-year follow-up

et al. 2006

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“…Due to the high mineral content of the enamel as well as its crystal structure, enamel etching may efficiently alter its surface profile by increasing the depth and number of micropores which leads to stronger adhesive tags and reduced gap size. 3 , 41 , 42 However, at dentinal margins, the bonded composite had poorer results. Due to its organic matrix and having a lower fraction of mineralized content, dentin is naturally wet which this may interfere with bonding to a hydrophobic material.…”

Section: Discussionmentioning

confidence: 99%

The effects of dentin bonding agent formulas on their polymerization quality, and together with tooth tissues on their microleakage and shear bond strength: an explorative 3-step experiment

Erfan

Kashi

Ghadiri³

et al. 2014

J Adv Prosthodont

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PURPOSEBonding agents (BA) are the crucial weak link of composite restorations. Since the commercial materials' compositions are not disclosed, studies to formulize the optimum ratios of different components are of value. The aim of this study was to find a proper formula of BAs.MATERIALS AND METHODSThis explorative experimental in vitro study was composed of 4 different sets of extensive experiments. A commercial BA and 7 experimental formulas were compared in terms of degree of conversion (5 experimental formulas), shear bond strength, mode of failure, and microleakage (3 experimental formulas). Statistical analyses were performed (α=.05). The DC of selected formula was tested one year later.RESULTSThe two-way ANOVA indicated a significant difference between the shear bond strength (SBS) of two tissues (dentin vs. enamel, P=.0001) in a way that dentinal bonds were weaker. However, there was no difference between the four materials (P=.283). The adhesive mode of failure was predominant in all groups. No differences between the microleakage of the four materials at occlusal (P=.788) or gingival (P=.508) sites were detected (Kruskal-Wallis). The Mann-Whitney U test showed a significant difference between the microleakage of all materials (3 experimental formulas and a commercial material) together at the occlusal site versus the gingival site (P=.041).CONCLUSIONA formula with 62% bisphenol A-glycidyl methacrylate (Bis-GMA), 37% hydroxy ethyl methacrylate (HEMA), 0.3% camphorquinone (CQ), and 0.7% dimethyl-para-toluidine (DMPT) seems a proper formula for mass production. The microleakage and SBS might be respectively higher and lower on dentin compared to enamel.

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“…We did use etching with orthophosphoric acid for 20 seconds prior to the placement of the glass ionomer primer, and this allowed the microleakage of Vitremer in unvarnished enamels to be similar to that of GrandiO Seal. According to Fracasso et al [31], acid etching of the enamel causes increased penetration of RMGIS (Vitremer), even in the less diluted concentration (1:1, instead of 1:¼), since the micromechanical adhesion-retention of acid etching is better than the chemical adhesion of RMGIS.…”

Section: Discussionmentioning

confidence: 99%

Microleakage of conventional light-cure resin-based fissure sealant and resin-modified glass ionomer sealant after application of a fluoride varnish on demineralized enamel

et al. 2018

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BackgroundInternational guidelines on the prevention of caries recommend sealing of the pits and fissures of the permanent molars. There is no evidence on which type of material is most effective on demineralized enamel.AimTo evaluate the microleakage of a conventional light-cured, resin-based fissure sealant (LCRBS), GrandiO Seal, and a resin-modified glass ionomer sealant (RMGIS), Vitremer, after application of a fluoride varnish, Bifluorid 12, on demineralized enamel.Design80 human third molars were divided into eight groups. The groups combined the three study factors (1) type of enamel (intact or demineralized); (2) enamel non-varnished or varnished with Biflourid12; and (3) type of sealant (GrandiO Seal or Vitremer). The percentage of microleakage after thermocycling was measured using imaging analysis software. The Kruskal-Wallis plus Dunn tests were used to compare differences in microleakage in the different groups.ResultsThe lowest microleakage was in the unvarnished groups, and was the same for GrandiO Seal and Vitremer. When varnish was applied, microleakage was greater in demineralized enamel than in intact enamel for both LCRBS and RMGIS.ConclusionThe application of fluoride varnish on demineralized enamel increases the microleakage of both GrandiO Seal and Vitremer.

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Avaliação da microinfiltração marginal e profundidade de penetração dos cimentos de ionômero de vidro utilizados como selantes oclusais

Cited by 10 publications

References 14 publications

Evaluation of glass ionomer sealants placed according to the ART approach in a community with high caries experience: 1-year follow-up

Evaluation of glass ionomer sealants placed according to the ART approach in a community with high caries experience: 1-year follow-up

The effects of dentin bonding agent formulas on their polymerization quality, and together with tooth tissues on their microleakage and shear bond strength: an explorative 3-step experiment

Microleakage of conventional light-cure resin-based fissure sealant and resin-modified glass ionomer sealant after application of a fluoride varnish on demineralized enamel

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