Surface degradation and biofilm formation on hybrid and nanohybrid composites after immersion in different liquids

Escamilla-Gómez, Gabriela; Sánchez-Vargas, Octavio; Escobar‐García, Diana María; Pozos‐Guillén, Amaury; Zavala-Alonso, Norma Verónica; Gutiérrez-Sánchez, Mariana; Pérez-López, José E; Sánchez-Balderas, G.; Romo-Ramírez, Gabriel Fernando; Magdaleno, Mariné Ortiz

doi:10.2334/josnusd.22-0085

Cited by 6 publications

(7 citation statements)

References 36 publications

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“…Despite the lack of previous studies that agree on the multiple interactions of types of manufacturing, mouthrinses, and measuring time, our results were consistent with the findings reported in other studies. Previous research found that NCR showed less VHN involvement than hybrids when exposed to acidic liquids (pH ≤ 3.2) after 7 days [24] and 15 days [23]. Another study found less VHN involvement in Z350 XT resins, especially when exposed to CHX at 0.12 (pH = 6.07) compared to other classifications of resin fillers and mouthrinses with a lower pH (<4.1) after 7 days [25].…”

Section: Discussionmentioning

confidence: 92%

“…Determination of surface VHN is a conventional noninvasive technique frequently used to evaluate the physical properties of biomaterials such as resins [22,23]. Greater resistance of the composite to indentation represents opposition to the influence of other structures providing greater durability over time and a lower risk of replacement due to failure [8][9][10].…”

Section: Discussionmentioning

confidence: 99%

“…The findings of this study are consistent with those mentioned above. This could be explained in that a greater volume of the filler and a smaller particle size of composite resins based on nanohybrid compounds compared to hybrid compounds provide greater efficiency in the response to degradation of the polymer matrix, especially with low pH values [23,25,28]. Likewise, an acidic environment caused by interaction with alcoholbased mouthwashes can hydrolyze ester radicals into monomer-like compounds.…”

Section: Discussionmentioning

confidence: 99%

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In Vitro Effect of Mouthrinses on the Microhardness of Three Different Nanohybrid Composite Resins

Bernaldo-Faustino,

Dulanto-Vargas,

Carranza-Samanez

2023

International Journal of Dentistry

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Introduction. Daily use of different mouthrinses at home or in the dental office can alter the properties of resin hardness. The present study aimed to compare Vickers microhardness (VHN) in vitro of nanohybrid composite resins (NCRs) immersed in mouthrinses. Materials and Methods. In total, 120 discs (10 ⨯ 2 mm) were prepared from three NCR shade A2 (n = 40/group) with FiltekTM Z350 XT (Z350XT), Tetric EvoCeram (TEC), and Polofil NHT (PNHT). The specimens were incubated in artificial saliva (37°C ⨯ 24 hr). Specimens were distributed into four mouthrinses (n = 10/group) of artificial saliva (control), chlorhexidine (CHX 0.12%, pH 5.6), cetylpyridine chloride (CPC 0.075%, pH 5.84), and CHX 0.12% + CPC 0.05% (pH 6.2) (2 times/day, 2’ ⨯ 12 hr). The VHN (300 gf/10”) was measured after 24 hr, 14, and 21 days. Data were analyzed by three-way analysis of variance, followed by post hoc Tukey analysis at 0.05 level of significance. Results. The results revealed a global effect of the interaction of the mouthrinses ⨯ time between NRC evaluated ( P = 0.001 ). Baseline VHN in PNHT and Z350XT was higher than TEC. Within each group of NCR, VHN of CHX + CPC > other mouthrinses (PNHT/14 days; Z350XT/21 days), and >CPC (Z350XT/14 days). In mouthrinses-intragroups, VHN of PNHT and Z350XT decreased at 14 days (CHX, CPC) and was maintained over time in NCR (CHX + CPC). VHN-TEC was similar among groups. Conclusion. Microhardness showed differences due to the interaction of the type of NCR, the composition of the mouthrinses, and time. VHN decreased after 14 days and was more affected in composite resins with lower filler content and in mouthrinses with a lower pH.

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Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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In Vitro Effect of Mouthrinses on the Microhardness of Three Different Nanohybrid Composite Resins

Bernaldo-Faustino,

Dulanto-Vargas,

Carranza-Samanez

2023

International Journal of Dentistry

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“…According to the main scientific evidence that was obtained through the analysis of the articles selected in this study, photoactivated composite resins were introduced in dentistry in the past decades, and are the first choice materials for direct restorations due to the evolution of their properties, such as color, brightness, surface smoothness, translucency and opacity that enable the aesthetic reconstruction of dental structures Initially, the restorative material was photoactivated by ultraviolet light, however, because of the harmful effects of radiation, this type of photoactivation fell into disuse [15].…”

Section: Major Findings -Composite Resin and Biofilmmentioning

confidence: 99%

Main approaches of biofilm formation in composite resins: a concise systematic review

Oliveira¹,

Perelli²,

Costa³

et al. 2023

MedNEXT

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Introduction: Composite resins are widely used in clinical dental practice to restore the structure lost by caries and dental defects, achieving aesthetic and functional results. Failures in the photoactivation process can cause problems in the mechanical resistance to wear in regions of direct occlusal contact on the restorative material. This occurs due to the reduction in the degree of conversion of monomers into polymers, compromising the clinical performance of the composite resin. Polymerization shrinkage leads to microleakage of the restoration, leading to staining and the development of bacterial biofilms. Objective: It was to carry out a systematic review of the main scientific evidence of biofilm formation on composite resin veneers, identifying potential predictors, as well as proposals to mitigate this problem. Methods: The systematic review rules of the PRISMA Platform were followed. The search was carried out from December 2022 to March 2023 in the Scopus, PubMed, Science Direct, Scielo, and Google Scholar databases, using articles from 2015 to 2022. The quality of the studies was based on the GRADE instrument and the risk of bias was analyzed accordingly, according to the Cochrane instrument. Results and Conclusion: A total of 125 articles were found, 25 articles were evaluated and 20 were included and developed in this systematic review study. Considering the Cochrane tool for risk of bias, the overall assessment resulted in 10 studies with a high risk of bias and 70 studies that did not meet GRADE. It was concluded that the surface properties of resin-based composite materials, as well as surface treatments, can strongly affect bacterial adhesion and biofilm formation. In addition, scientific evidence highlights that cariogenic biofilm formation can alter the surface properties of materials, thus stimulating bacterial adhesion and biofilm formation. Photoactivation allows the curing and crosslinking of polymer chains, essential for the clinical longevity of the composite resin. Insufficient photoactivation culminates in marginal microleakage in restorations and biofilm accumulation on surfaces exposed to the oral environment.

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“…Pocos estudios han evaluado la rugosidad (Ra) de las resinas después de la inmersión exclusiva en bebidas carbonatadas. En experimentos in vitro se halló que la Ra aumentó en superficies de resinas nanohíbridas, híbridas, microhíbridas y de nanorrelleno, frente a la exposición de bebidas ácidas como gaseosa, té, café o naranja ( 5,(21)(22)(23)(24) ).…”

Section: Introductionunclassified

Rugosidad superficial de dos resinas compuestas después de la inmersión en bebidas gaseosas: estudio in vitro

Alarcón-Torres,

Chávez-Méndez

2024

Rev Cient Odontol (Lima)

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Objective: Compare the surface roughness of two composite resins after immersion in carbonated beverages. Materials and methods: 160 resin discs (6 x 2 mm) were divided into 8 groups (n=20 per group) according to type of resin (Filtek™ Z350 XT® and Palfique LX5®) and type of immersion in beverages (distilled water, Coca Cola®, Inca Kola® and Kola Escocesa®. The immersions were carried out under a structured cycle: 4 immersions a day for 5 days, intermediate storage in distilled water and overnight incubation for 8 h at 37°C. The measurements with the roughness meter were evaluated in three times: baseline, 7 and 14 days. The three-way Anova test was used at P<0.05. Results: Roughness showed differences only for the individual factors of time (P<0.000) and resin (P=0.000), and for the interaction time*drink (P=0.000) and resin*drink (P=0.003). Roughness was higher with Filtek Z350 XT® immersed with Inca Kola® (0.85 ± 0.37) than 14 days compared to other times (P=0.035) and with Palfique LX5 immersed in Coca Cola® at 7 days (1.61 ± 0.42) and in Inca Kola® at 14 days (1.66 ± 0.56) compared to distilled water (P<0,05). Conclusion: Surface roughness was affected by the type of resin, the type of soft drink and the immersion time. The roughness was greater with the Palfique LX5® nanohybrid resin, the Inca Kola® drink and after 14 days of immersion.

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Surface degradation and biofilm formation on hybrid and nanohybrid composites after immersion in different liquids

Cited by 6 publications

References 36 publications

In Vitro Effect of Mouthrinses on the Microhardness of Three Different Nanohybrid Composite Resins

In Vitro Effect of Mouthrinses on the Microhardness of Three Different Nanohybrid Composite Resins

Main approaches of biofilm formation in composite resins: a concise systematic review

Rugosidad superficial de dos resinas compuestas después de la inmersión en bebidas gaseosas: estudio in vitro

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