The influence of storage time and pH variation on water sorption by different composite resins

Gusmão, George Mário de Araújo Silva; Queiroz, Thiago Vinicius Veras De; Pompeu, Guilherme Ferrer; Filho, Paulo Fonseca Menezes; Silva, Claúdio Heliomar Vicente da

doi:10.4103/0970-9290.114954

Cited by 11 publications

(7 citation statements)

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“…Water sorption is realized by two means: adsorption and absorption. Adsorption is the attachment of molecules of a liquid or gas on the resin surface and absorption happens by penetration of liquid or gas within the mass of the composite resins [ 43 ]. Water sorption and hygroscopic expansion are among the physical properties of the composites.…”

Section: Discussionmentioning

confidence: 99%

“…The oral environment can interfere with the water sorption of composite resins, due to its pH variation, either through acidic foods or organic acids (lactic and acetic acid) [ 43 ] or, in case of patients suffering from GERD, through the regurgitation of gastric juices into the oral cavity [ 46 ].…”

Section: Discussionmentioning

confidence: 99%

“…Gusmão et al [ 43 ] studied the water sorption of nine specimens of nanoparticle, microhybrid, and nanohybrid composite resins stored in artificial saliva with pH 7.0 (control) and varying pH (4.3–7.0) for the test group. Weight gain for all the resins at all-time intervals was observed and the authors concluded that the degree of sorption is dependent upon storage time and composite chemical composition and was affected by the medium pH.…”

Section: Discussionmentioning

confidence: 99%

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Evaluation of the Behavior of Two CAD/CAM Fiber-Reinforced Composite Dental Materials by Immersion Tests

et al. 2021

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Fiber-reinforced composites are used as restorative materials for prosthetic oral rehabilitation. Gastroesophageal reflux disease (GERD) is an accustomed affection with various oral manifestations. This study aimed to evaluate the behavior of two high-performance CAD/CAM milled reinforced composites (Trinia™, TriLor) in artificial saliva at different pH levels through immersion tests, and to determine if changes in mass or surface morphology at variable pH, specific for patients affected by GERD, appear. After investigating the elemental composition and surface morphology, the specimens were immersed in Carter Brugirard artificial saliva for 21 days at different pH values (5.7, 7.6, and varying the pH from 5.7 to 3). The values of the weighed masses during the immersion tests were statistically processed in terms of mean and standard deviation. Results suggested that irrespective of the medium pH, the two composites presented a similar mass variation in the range of −0.18 (±0.01)–1.82 (±0.02) mg after immersion, suggesting their stability when in contact with artificial saliva, an aspect which was also highlighted by scanning electron microscope (SEM) analysis performed on the immersed surfaces. Novel composite biomaterials can be a proper alternative for metal alloys used for prosthetic frameworks in patients suffering from GERD.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Evaluation of the Behavior of Two CAD/CAM Fiber-Reinforced Composite Dental Materials by Immersion Tests

et al. 2021

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“…PICN has UDMA and TEGDMA monomers in their composition. Great water sorption has been reported in composites containing high TEGDMA content compared to other methacrylate monomers 23 . This is explained by the hydrophilicity of TEGDMA.…”

Section: Discussionmentioning

confidence: 99%

Color and translucency stability of CAD/CAM restorative materials

Dalforno

Auzani

Zucuni

et al. 2021

Braz.j. of oral sci.

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Aim: This study assessed the color and translucency stability of a polymer infiltrated ceramic network (PICN) and compared it with a resin composite (RC) and a feldspathic ceramic (FEL). Methods: Disc-shaped samples of a PICN (Vita Enamic), a feldspathic ceramic (Vitablocks Mark II), and a resin composite (Brava block) were prepared from CAD/CAM blocks. PICN and RC surfaces were finished with a sequence of polishing discs and diamond paste. FEL samples received a glaze layer. The samples were subjected to 30-min immersions in red wine twice a day for 30 days. CIEL*a*b* coordinates were assessed with a spectrophotometer at baseline and after 15 and 30 days of immersion. Color alteration (ΔE00) and translucency parameter (TP00) were calculated with CIEDE2000. Average roughness was measured before the staining procedures. Color difference and translucency data were analyzed with repeated-measures ANOVA and Tukey’s tests. Roughness was analyzed with the Kruskal-Wallis test. Results: Roughness was similar among the experimental groups. All materials had their color alteration significantly increased from 15 to 30 days of staining. PICN reached an intermediate ΔE00 between FEL and RC at 15 days. PICN revealed a color alteration as high as the composite after 30 days. No statistical difference was observed regarding translucency. Conclusion: PICN was not as color stable as the feldspathic ceramic at the end of the study. Its color alteration was comparable to the resin composite when exposed to red wine. However, the translucency of the tested materials was stable throughout the 30-day staining.

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“…Quanto à sorção e à solubilidade, são particularmente observadas consequências que podem levar a um significativo desgaste da resina composta (GUSMÃO et al, 2013).…”

Section: Degradação Hidrolíticaunclassified

A Influência Da Sorção E Solubilidade Nas Propriedades Dos Compósitos Resinosos: Uma Revisão De Literatura

Narrely Santos ALVES,

GADELHA VASCONCELOS,

VASCONCELOS

2023

SalusVita

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Introdução: A resina composta tem sido amplamente utilizada por suas propriedades restauradoras. No entanto, quando exposta à água, o material resinoso sofre diferentes mecanismos químicos e físicos, como a sorção de água e solubilidade. Esses efeitos podem produzir alterações volumétricas e mudanças físicas, alterando as características do material. Objetivo: discorrer acerca das consequências clínicas dos fenômenos de sorção e solubilidade na resina composta. Materiais e Métodos: uma revisão da literatura foi realizada por meio de artigos científicos publicados nos últimos anos presentes em bases de dados eletrônicos, como PubMED/Medline, Lilacs e Scielo. Resultados e Discussão: Os compósitos de resina não são estáveis, pois interagem constantemente com o ambiente oral. Sua principal interação é com água, que se difunde na matriz. As resinas compostas que contêm, além do BIS-GMA, uma alta concentração de TEGDMA, tendem a absorver mais água devido às ligações éter hidrofílicas presentes nesses compósitos. Com isso, uma série de efeitos deletérios podem ocorrer. Conclusão: A expansão volumétrica, lixiviação, degradação hidrolítica e instabilidade da cor são as principais consequências da sorção e solubilidade da resina composta. Esses fenômenos provocam alterações dimensionais e diminuição das propriedades mecânicas repercutindo, sobremaneira, na longevidade das restaurações em resina composta.

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The influence of storage time and pH variation on water sorption by different composite resins

Abstract: The water sorption of composite resins is dependent upon their storage time. The pH cycling created a significant impact on resins G1, G5, and G7. The sorption and solubility of composite resins vary according to their chemical composition.

Cited by 11 publications

References 0 publications

Evaluation of the Behavior of Two CAD/CAM Fiber-Reinforced Composite Dental Materials by Immersion Tests

Evaluation of the Behavior of Two CAD/CAM Fiber-Reinforced Composite Dental Materials by Immersion Tests

Color and translucency stability of CAD/CAM restorative materials

A Influência Da Sorção E Solubilidade Nas Propriedades Dos Compósitos Resinosos: Uma Revisão De Literatura

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