Morphochemical characterization, microhardness, water sorption, and solubility of regular viscosity bulk fill and traditional composite resins

Melo, Rafaela Albuquerque; Bispo, Andressa de Souza Leite; Barbosa, Gustavo Augusto Seabra; Galvão, Marília Regalado; Assunção, Isauremi Vieira de; Souza, Rodrigo Othávio de Assunção e; Borges, Boniek Castillo Dutra

doi:10.1002/jemt.23315

Cited by 14 publications

(10 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Although TET also has a lower Young's modulus than the tooth structure, the fillings fractured during the measurements. One explanation might be that a fracture can spread more easily between the single polymerized parts due to unavoidable minimal inhomogeneities [32]. The teeth of this study fractured completely as well as cusp fractures occurred, which is rather explained by the irregular anatomical shapes of the used molars.…”

Section: Discussionmentioning

confidence: 66%

Fracture load of 3D printed PEEK inlays compared with milled ones, direct resin composite fillings, and sound teeth

et al. 2020

View full text Add to dashboard Cite

Objective The objective of this in vitro study was to investigate fracture load, fracture types, and impact of chewing simulation of human molars restored with 3D printed indirect polyetheretherketone (PEEK) inlays and compare these with milled indirect PEEK inlays, direct resin composite fillings, and sound teeth. Materials and methods A total of 112 molars with form congruent class I cavities were restored with (n = 16/group) 3D printed indirect PEEK inlays via fused layer manufacturing (FLM): (1) Essentium PEEK (ESS), (2) KetaSpire PEEK MS-NT1 (KET), (3) VESTAKEEP i4 G (VES), (4) VICTREX PEEK 450G (VIC), (5) milled indirect PEEK inlays JUVORA Dental Disc 2 (JUV), and (6) direct resin composite fillings out of Tetric EvoCeram (TET). Sound teeth (7) acted as positive control group. Half of the specimens of each group (n = 8) were treated in a chewing simulator combined with thermal cycling (1.2 million × 50 N; 12,000 × 5°C/55°C). Fracture load and fracture types of all molars were determined. Statistical analyses using Kolmogorov-Smirnov test and two-way ANOVA with partial eta squared (η p 2 ) followed by Scheffé post hoc test, chi square test and Weibull modulus m with 95% confidence interval were computed (p < 0.05). Results ESS and TET demonstrated the lowest fracture load with a minimum of 956 N, whereas sound molars showed the highest values of up to 2981 N. Chewing simulation indicated no impact (p = 0.132). With regard to Weibull modulus, KET presented a lower value after chewing simulation than JUV, whereas TET had the highest value without chewing simulation. All indirect restorations revealed a tooth fracture (75-100%), direct resin composite fillings showed a restoration fracture (87.5%), and 50% of the sound teeth fractured completely or had cusp fractures. Conclusions All 3D printed and milled indirect PEEK inlays as well as the direct resin composite fillings presented a higher fracture load than the expected physiological and maximum chewing forces. Clinical relevance 3D printing of inlays out of PEEK via FLM provided promising results in mechanics, but improvements in terms of precision and esthetics will be required to be practicable in vivo to represent an alternative dental material.

show abstract

Section: Discussionmentioning

confidence: 66%

Fracture load of 3D printed PEEK inlays compared with milled ones, direct resin composite fillings, and sound teeth

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Furthermore, bulk-fill RBC contains less filler than conventional nano-hybrid RBC. 28 Therefore, lower filler percentage may be the reason for the higher solubility of TNCBF at pH = 2.5 than TNC, whereas the difference was not statistically significant.…”

Section: Discussionmentioning

confidence: 90%

“…Although the reason for this was not evaluated, the author speculates that the bulk-fill RBC has a higher degree of conversion than the conventional. 28…”

Section: Discussionmentioning

confidence: 99%

A Laboratory Study of the Effect of pH on Solubility of Bulk-Fill and Conventional Composites

Farahat,

Jafari,

Ardakani

et al. 2023

Journal of Advanced Oral Research

View full text Add to dashboard Cite

Aim: Factors such as the low pH of acidic foods and beverages can affect long-term clinical success of restorative materials in the oral cavity. The aim of this study was to compare the solubility of Bulk-fill and Conventional Nano-Hybrid Resin Based Composites (RBCs) in different solutions. Material and Methods: A total of 60 cylindrical specimens were prepared from two RBCs (Tetric N-Ceram, Tetric N-Ceram Bulk-fill) and their constant weight was measured. The specimens were divided into six groups ( N = 10) in accordance with RBC type and pH solution (solution 1, 2, 3 with pH = 2.5, 5, 7, respectively), and were immersed in desired solutions for 30 days. Then they were weighed again and solubility levels of the specimens were calculated according to ISO 4049. Data were analysed by two-way ANOVA. The test power was considered at 80%. Results: The type of RBC had no significant effect on solubility; while the effect of PH was significant. Solution 1 caused significantly the highest solubility. No statistically significant differences were found among other groups. Conclusions: Considering the limitations of the laboratory investigations, it was concluded that solubility rate of Bulk-fill and Conventional RBCs was higher in solutions with lower pH. There was no difference among the RBCs. However, the solubility rates of all groups are within the clinically normal range.

show abstract

“…Os espécimes foram pesados em balança analítica/digital (AG200, Gehaka, São Paulo, Brasil) individualmente. Para cada espécime, os dados de SO e SL em água foram calculados usando as seguintes fórmulas 19,20 : SO=(m2-m3)/V e SL=(m1-m3)/V.…”

Section: Sorção E Solubilidade (So E Sl)unclassified

Avaliação do efeito da termociclagem nas propriedades ópticas e na rugosidade superficial de duas resinas compostas comerciais

Maass

Ferreira

Santos

et al. 2020

Rev Odontol Bras Central

View full text Add to dashboard Cite

Objetivo: Avaliar o efeito do envelhecimento térmico por termociclagem na estabilidade de cor e rugosidade superficial de duas resinas compostas, avaliar grau de conversão (GC), sorção (SO), solubilidade (SL) e microdureza. Material e método: Foram confeccionados 10 espécimes (6 mm x 1 mm) para cada resina: Filtek Z350 XT (Z350XT) e Estelite Sigma Quick (ES). Foram avaliados: GC, utilizando um espectrofotômetro no infravermelho, SO e SL. A avaliação da microdureza Vickers (MV) e densidade de ligações cruzadas foram realizadas antes e após a imersão em etanol por 24h. A rugosidade superficial e a estabilidade de cor (CIEDE2000) foram avaliadas antes e após envelhecimento térmico por 2 mil ciclos, alternando 30 s a 5º, 37º e 55ºC. A estabilidade de cor e translucidez foram avaliadas com um espectrofotômetro. Os dados foram submetidos ao teste t (α=0,05). Resultados: ES apresentou resultados de GC maiores (62,5% ± 3,7) que Z350XT (48,7% ± 6,9) (p=0,004). Ambas resinas apresentaram resultados de SO e SL similares. A MV final da ES diminuiu 13% com relação a inicial (p= 0,115). Z350XT apresentou diminuição de 17% (p=0,004). ES apresentou aumento de 115% na rugosidade superficial após a termociclagem (p= 0,001), enquanto a Z350XT apresentou diminuição de 35% (p= 0,299). ES apresentou menor alteração de cor (0,280 ± 0,093), quando comparado a Z350XT (0,549 ± 0,183). A translucidez foi similar para ambos materiais (ES=30,80; Z350XT=30,35). Conclusão: A termociclagem influenciou na alteração de cor e rugosidade superficial das resinas compostas, demonstrando que podem ser alteradas pela degradação na matriz polimérica.

show abstract

Morphochemical characterization, microhardness, water sorption, and solubility of regular viscosity bulk fill and traditional composite resins

Cited by 14 publications

References 20 publications

Fracture load of 3D printed PEEK inlays compared with milled ones, direct resin composite fillings, and sound teeth

Fracture load of 3D printed PEEK inlays compared with milled ones, direct resin composite fillings, and sound teeth

A Laboratory Study of the Effect of pH on Solubility of Bulk-Fill and Conventional Composites

Avaliação do efeito da termociclagem nas propriedades ópticas e na rugosidade superficial de duas resinas compostas comerciais

Contact Info

Product

Resources

About