Effect of light-emitting diode and halogen light curing on the micro-hardness of dental composite and resin-modified glass ionomer cement: An in vitro study

Bhalla, Manish; Patel, Dhvani Gordhanbhai; Shashikiran, N D; Mallikarjuna, Rachappa; Nalawade, Triveni Mohan; Reddy, H. N. Jagannath

doi:10.4103/0970-4388.105011

Cited by 9 publications

(12 citation statements)

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“…El ionóme-ro de vidrio es uno de los materiales más utilizados en el área de rehabilitación oral, y actualmente es el material de elección como base intermedia debido a su adhesión a la estructura dentaria y a su efecto anticariogénico, además de su comportamiento mecánico [1][2][3][4][5]. Su elevado módulo elástico y su coeficiente de expansión térmica son similares a los de la dentina, lo que le da una rigidez similar a ella [6][7][8].…”

Section: Introductionunclassified

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Cambios en la resistencia compresiva del ionómero de vidrio al ser grabado con ácido ortofosfórico

et al. 2013

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Resumen. Introducción: los ionómeros de vidrio resinomodificados son materiales usados como base intermedia en procedimientos dentales. El objetivo fue evaluar los cambios que ocurren en la resistencia compresiva de un ionómero de vidrio resinomodificado después de ser grabado con ácido ortofosfórico al 37%. Materiales y métodos: Estudio experimental in vitro. Se prepararon 40 moldes termoformados, 20 muestras en el grupo experimental (ge) a las que se les aplicó ácido fosfórico durante 15 s y fueron lavadas durante 40 s, y 20 muestras en el grupo control (cg). Diez muestras de cada grupo se almacenaron por 48 horas al baño maría. Todas las muestras fueron sometidas a una fuerza compresiva usando una máquina universal de prueba. El análisis se realizó en el programa estadístico spss versión 19. Se realizaron las pruebas de Tukey y Anova. Resultados: hubo diferencias estadísticamente significativas entre los grupos con y sin ácido a los 15 minutos con respecto a los grupos con y sin ácido a las 48 horas (P = 0,01). Conclusiones: la aplicación de ácido fosfórico al 37% no afecta la resistencia compresiva de los ionómeros de vidrio resinomodificados. La reducción en la resistencia compresiva podría estar asociada al almacenamiento en medio húmedo.Palabras clave: ácido ortofosfórico, base intermedia, fuerza compresiva, ionómero de vidrio resino modificado. Changes in the Resistance to Compression of Resin-modified Glass after Etching with Orthophosphoric AcidAbstract. Introduction: Resin-modified glass ionomers are materials used as an intermediate base in some dental procedures. Our objective was to evaluate the changes that occur in resistance to compression in a light-cured resin-modified glass ionomer after etching it with 37% orthophosphoric acid. Materials and methods: We carried out an experimental study in vitro. We prepared forty thermoformed molds. The control group (cg) consisted of 20 samples to which no phosphoric acid was applied and the experimental group (ge) included 20 samples that were etched with 37% orthophosphoric acid for 15 seconds and rinsed with water for 40 seconds. All samples were subjected to a compressive test using an Instron universal testing machine. 10 samples of each group were stored in a water bath. For the analysis we used spss version 19. Tukey and Anova tests were performed. Results: There were statistically significant differences between the groups with and without acid at 15 minutes with respect to the groups with and without acid at 48 hours. (P = 0.01). Conclusions: The application of 37% phosphoric acid for 15 seconds does not affect the resistance to compression strength of a lightcured resin-modified glass ionomer. Reduction in resistance to compression might be associated with storing the samples in a wet environment.Keywords: orthophosphoric acid, intermediate base, resistance to compression, light-cured resin-modified glass ionomer. Mudanças na resistência compreensiva do ionômero de vidro ao ser gravado com ácido ortofosfóricoResumo. Introdução: os ionômeros de vi...

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Section: Introductionunclassified

“…Los ionómeros de vidrio presentan una alta susceptibilidad a la humedad debido a su proceso de endurecimiento, el cual tiene una maduración inicial durante las primeras 24 horas [1][2][3][4][5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionunclassified

Cambios en la resistencia compresiva del ionómero de vidrio al ser grabado con ácido ortofosfórico

et al. 2013

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“…1 In hybrid ionomer, water-soluble methacrylate-based monomers have been used to replace part of liquid component of conventional glass ionomer cement. in attempt to improve mechanical properties, decrease setting time, and reduce moisture sensitivity of glass ionomer materials.…”

Section: Introductionmentioning

confidence: 99%

Surface Hardness of Hybrid Ionomer with Different Curing Time (In Vitro Study)

2017

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Objective: The aim of this study was to evaluate the surface hardness of hybrid ionomer with different curing times (20, 30, 40, and 50 seconds). Methods:This was an experimental laboratory with posttest only group design. Twenty-four disk shape hybrid ionomer specimens with a diameter of 5 mm and 2 mm in thickness were prepared and polymerized with Quartz Tungsten Halogen (QTH) for 20, 30, 40, and 50 seconds as group 1, 2, 3, and 4 respectively. All samples were immersed in distilled water under 37°C temperature for 24 hours as initial treatment. Surface hardness test was done using Vickers Hardness Test with load 50 gf for 20 second. The Data was analyzed with one way ANOVA (p ≤ 0.05).Results: Using one way anova test (p ≤ 0.05) shows the mean and standard deviation of the group 1 is 25,900 ± 2,5659VHN; group 2 is 29,800 ± 1,1983 VHN; group 3 is 31,283 ± 0,5037 VHN; group 4 is 36, 183 ± 2,3430 VHN and the obtained value p = 0.000 (p ≤ 0.05).The mean values and standard deviation were 25.900 ± 2.5659 VHN; 29.800 ± 1.1983 VHN; 31.283 ±0.5037 VHN; 6.183 ± 2.3430 VHN for group 1, 2, 3, and 4 respectively. Statistic analyzed showed a significant different among groups with p value =0.000 (p < 0.05). Conclusion:There are significant differences in surface hardness of hybrid ionomer with different curing time (20, 30,40, and 50 seconds). The longer curing time will increase the surface hardness of hybrid ionomer.

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“…Entretanto, os CIVs são materiais friáveis e porosos (Talal et al, 2009;Azevedo et al, 2011) e bastante sensíveis à umidade, sofrem sinérese ou embebição antes da maturação, especialmente nas primeiras 24 horas, podendo ocorrer dissolução ou trincas no material, comprometendo algumas propriedades como resistência inicial do material, dureza e resistência ao desgaste (CattaniLorente et al, 1999;Talal et al, 2009;Azevedo et al, 2010;O'Brien et al, 2010;Azevedo et al, 2011;Guglielmi et al, 2012;Fabián Molina et al, 2013;Calvo et al, 2016 (Yiu et al, 2004a;Xie et al, 2008;Kim et al, 2013 (Yiu et al, 2004b;Talal et al, 2009;O'Brien et al, 2010;Arita et al, 2011;Bhalla et al, 2012;Guglielmi et al, 2012;Pacifici et al, 2014), além disso há relatos de problemas toxicológicos devido a liberação de monômeros pelo CIVMR ,o que pode irritar a polpa dentária restringindo o uso desse material em alguns casos (Kleverlaan et al, 2004;Xie et al, 2008;Talal et al, 2009;Azevedo et al, 2010).…”

Section: Características Dos Cimentos De Ionômero De Vidrounclassified

“…As a result the FS, the ultrasound with setting reaction resulted in higher values and similar to the negative control group, regardless of the format of the HVGIC. SR for Ra (Hse et al, 1999;da Silva;Zuanon, 2006;Frencken, 2010;Bhalla et al, 2012) mostrando longevidade satisfatória em restaurações oclusais (Frencken et al, 2004;Faccin et al, 2009;Frencken, 2010;Mickenautsch et al, 2010;Fábian Molina et al, 2013) e, até mesmo ocluso-proximais, quando comparados a outros materiais (Raggio et al, 2013 (Frencken et al, 2004;da Silva;Zuanon, 2006;Frencken, 2010).…”

Section: Introductionunclassified

Influência da aceleração de presa por meio de ultrassom, luz halógena e diodo emissor de luz nas propriedades e resistência de união à dentina de cimentos de iônomero de vidro

Yoshioka¹

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Effect of light-emitting diode and halogen light curing on the micro-hardness of dental composite and resin-modified glass ionomer cement: An in vitro study

Cited by 9 publications

References 0 publications

Cambios en la resistencia compresiva del ionómero de vidrio al ser grabado con ácido ortofosfórico

Cambios en la resistencia compresiva del ionómero de vidrio al ser grabado con ácido ortofosfórico

Surface Hardness of Hybrid Ionomer with Different Curing Time (In Vitro Study)

Influência da aceleração de presa por meio de ultrassom, luz halógena e diodo emissor de luz nas propriedades e resistência de união à dentina de cimentos de iônomero de vidro

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