scholarly journals Kinetic of water diffusion and color stability of a resin composite as a function of the curing tip distance

2012 ◽  
Vol 15 (4) ◽  
pp. 603-610 ◽  
Author(s):  
Nádia da Rocha Svizero ◽  
Roberta Caroline Bruschi Alonso ◽  
Linda Wang ◽  
Regina Guenka Palma-Dibb ◽  
Maria Teresa Atta ◽  
...  
Keyword(s):  
Resin Composite ◽  
Color Stability ◽  
Water Diffusion

scholarly journals Effect of Brushing Time and Dentifrice Abrasiveness on Color Change and Surface Roughness of Resin Composites

2015 ◽  
Vol 26 (5) ◽  
pp. 507-513 ◽  
Author(s):  
Lourenço de Moraes Rego Roselino ◽  
Michelle Alexandra Chinelatti ◽  
Carla Cecilia Alandia-Román ◽  
Fernanda de Carvalho Panzeri Pires-de-Souza
Keyword(s):  
Surface Roughness ◽  
Healthy Individual ◽  
Repeated Measures ◽  
Color Change ◽  
Resin Composite ◽  
Color Stability ◽  
Resin Composites ◽  
Repeated Measures Anova ◽  
Bonferroni Test ◽  
Initial Color

Abstract: Dentifrice abrasiveness and brushing time may increase color change (∆E) and surface roughness (∆Ra) of resin composites. This study aimed to evaluate the effect of mechanical brushing time of dentifrices with different abrasiveness on ∆E and ∆Ra of nanofilled (Z350, 3M ESPE) and nanohybrid (Tetric N-Ceram, Ivoclar Vivadent) resin composites. Sixteen specimens (12 mm diameter x 2 mm thick) were fabricated using a white Teflon matrix of each resin composite and a ceramic (IPS e.max Ceram, Ivoclar Vivadent), used as control. After initial color readouts on white backgrounds (Spectrophotometer PCB 6807, Byk Gardner), with D65 standard illuminant, and surface roughness (Rugosimeter Surfcorder SE 1700, Kosalab) with cut-off=0.8 mm and speed=0.25 mm/s, specimens were assigned (n=8) according to the abrasiveness of the dentifrices: RDA* 68 (Colgate) and RDA* 180 (Colgate Total Plus Whitening). Specimens were submitted to mechanical brushing (58,400 cycles) and after every 14,600 cycles (1 year of brushing by a healthy individual), new color and surface roughness readouts were taken. Color stability was calculated by CIEDE2000. Data were analyzed by 3-way repeated measures ANOVA and Bonferroni test (p<0.05), and demonstrated that the dentifrice abrasiveness (p=0.02) and brushing time (p<0.0001) affected the ∆E of nanofilled resin composite. There was no difference on surface roughness of materials (p=0.6752) or brushing time (p=0.7997). In conclusion, the longer the brushing time and dentifrice abrasiveness, the greater the color change of the nanofilled resin composite. The surface roughness was not influenced by dentifrice abrasiveness.

scholarly journals Color stability of a resin composite: Effect of the immersion method and surface treatments

2016 ◽  
Vol 27 (2) ◽  
pp. 195 ◽  
Author(s):  
RO Rocha ◽  
LL Miotti ◽  
GF Nicoloso ◽  
LB Durand ◽  
AH Susin
Keyword(s):  
Resin Composite ◽  
Color Stability ◽  
Surface Treatments ◽  
Immersion Method ◽  
Composite Effect

scholarly journals Clinical Effectiveness of Bulk-Fill and Conventional Resin Composite Restorations: Systematic Review and Meta-Analysis

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1786 ◽  
Author(s):  
Heber Isac Arbildo-Vega ◽  
Barbara Lapinska ◽  
Saurav Panda ◽  
César Lamas-Lara ◽  
Abdul Samad Khan ◽  
...  
Keyword(s):  
Systematic Review ◽  
Randomized Clinical Trials ◽  
Resin Composite ◽  
Meta Analysis ◽  
Color Stability ◽  
Clinical Effectiveness ◽  
Clinical Effects ◽  
Composite Restorations ◽  
Restoration Technique ◽  
Bibliographic Search

The objective of this systematic review and meta-analysis was to determine the clinical effectiveness of bulk-fill and conventional resin in composite restorations. A bibliographic search was carried out until May 2020, in the biomedical databases Pubmed/MEDLINE, EMBASE, Scopus, CENTRAL and Web of Science. The study selection criteria were: randomized clinical trials, in English, with no time limit, with a follow-up greater than or equal to 6 months and that reported the clinical effects (absence of fractures, absence of discoloration or marginal staining, adequate adaptation marginal, absence of post-operative sensitivity, absence of secondary caries, adequate color stability and translucency, proper surface texture, proper anatomical form, adequate tooth integrity without wear, adequate restoration integrity, proper occlusion, absence of inflammation and adequate point of contact) of restorations made with conventional and bulk resins. The risk of bias of the study was analyzed using the Cochrane Manual of Systematic Reviews of Interventions. Sixteen articles were eligible and included in the study. The results indicated that there is no difference between restorations with conventional and bulk resins for the type of restoration, type of tooth restored and restoration technique used. However, further properly designed clinical studies are required in order to reach a better conclusion.

scholarly journals Effect of Energy Drinks on Color Stability of Different Restorative Materials

2021 ◽  
Vol 7 (5) ◽  
Author(s):  
AlSarheed M ◽  
Salama F
Keyword(s):  
Resin Composite ◽  
Glass Ionomer Cement ◽  
In Vitro Study ◽  
Color Stability ◽  
Energy Drinks ◽  
Glass Ionomer ◽  
Hybrid Resin ◽  
Restorative Materials ◽  
Ionomer Cement

Background: The purpose of this in vitro study was to evaluate the effect of finishing/polishing procedures on color stability of three restorative materials: Nano-hybrid resin composite (NRC), silver glass ionomer cement (SGI), and resin-modified glass ionomer cement (RMGI) exposed to different staining of energy drinks: Barbican, Bison, and Red bull.

scholarly journals Influence of electronic nicotine delivery systems (ENDS) in comparison to conventional cigarette on color stability of dental restorative materials

2020 ◽  
Vol 36 (5) ◽  
Author(s):  
Fahim Vohra ◽  
Abdulelah Andejani ◽  
Osamah Alamri ◽  
Abdulaziz Alshehri ◽  
Rana S Al-Hamdan ◽  
...  
Keyword(s):  
Color Change ◽  
Resin Composite ◽  
Color Stability ◽  
Delivery Systems ◽  
Electronic Nicotine Delivery Systems ◽  
Ceramic Samples ◽  
Dental Restorative Materials ◽  
Nicotine Delivery ◽  
Restorative Materials ◽  
Dental Restorative

Objective: The use of Electronic Nicotine Delivery Systems (ENDS) is increasing rapidly. However, its discoloring effect on dental restorations is not known. This study aimed to evaluate the effect of ENDS aerosol when compared to conventional cigarette smoke (CS) on the color stability of dental ceramic (DC) and resin composite (RC). Methods: This research project was conducted from November 2018 to May 2019. In this study 30 discs each for DC and RC materials were fabricated to be equally divided into groups of exposure to CS, ENDS aerosol and storage in distilled water (No smoke; NS) respectively (n=10). Specimens were exposed for a total of 7 days, with a rate of 10 cycles per day, each cycle represented 10 puffs. The color change was assessed using the CIELAB color space, by calculating ΔE. Data was analysed using ANOVA and multiple comparisons test. Results: Ceramic specimens in CS (2.422 ± 0.771) and ENDS (2.396 ± 0.396) groups showed comparable ΔE (color change) (p=0.992). Similarly, composite specimens in CS (42.871 ± 2.442) and ENDS (46.866 ± 3.64) groups showed comparable ΔE (p>0.05). NS specimens in both composite and ceramic samples showed lower ΔE than CS and ENDS specimens respectively. Conclusions: Aerosol from Electronic nicotine delivery systems (ENDS) showed similar discoloration levels as cigarette smoking (CS). The level of discoloration for ceramic samples for both ENDS and CS was below clinically perceptible levels (Mean ΔE < 2.5). Discoloration of composite resin due to CS and ENDS was visually perceptible (Mean ΔE > 4.0). doi: https://doi.org/10.12669/pjms.36.5.2303 How to cite this:Vohra F, Andejani AF, Alamri O, Alshehri A, Al-Hamdan RS, Almohareb T, et al. Influence of electronic nicotine delivery systems (ENDS) in comparison to conventional cigarette on color stability of dental restorative materials. Pak J Med Sci. 2020;36(5):---------.  doi: https://doi.org/10.12669/pjms.36.5.2303 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

scholarly journals The Effects of Mouthwashes on the Color Stability of Resin-Based Restorative Materials

2020 ◽  
pp. 346-357
Author(s):  
Ayşe Tuğba Ertürk-Avunduk ◽  
Seçkin Aksu ◽  
Ebru Delikan
Keyword(s):  
Analysis Of Variance ◽  
Color Change ◽  
Resin Composite ◽  
Color Stability ◽  
Multiple Comparison ◽  
Color Measurement ◽  
Distilled Water ◽  
Significant Difference ◽  
Restorative Materials ◽  
Post Hoc

Objective: This study investigated the effects of three types of mouthwash on the color stability of three resin-based restorative materials (nanohybrid resin composite, sonic-activated bulk-fill material, and compomer). Materials and Methods: To this end, 120 cylindrical disc specimens were prepared and polished, after which they were incubated in distilled water for 24 hours for post-polymerization. The baseline color values of each specimen were measured with a spectrophotometer, then the specimens were randomly divided into four groups. Following immersion in the mouthwashes for 24 hours, the specimens were rinsed with distilled water and dried before the color measurement was repeated. The values of color change (∆E₀₀) were subsequently calculated. A two-way analysis of variance and Duncan’s post hoc multiple comparison tests were conducted to determine statistically significant differences among the restorative materials. Results: All samples showed discoloration after immersion, albeit some instances of discoloration were imperceptible. In this respect, a statistically significant difference was found among the restorative materials and mouthwashes (p<0.05). Imperceptible ∆E₀₀ values were derived on the nanohybrid resin composite and compomer, but perceptible and acceptable ∆E₀₀ values were detected on the sonic-activated bulk-fill materials (p<0.05). The clinically unacceptable discoloration was observed on the sonic-activated bulk-fill composite immersed in Listerine®. Conclusions: Clinicians should make recommendations based on the potential staining capacity of mouthwashes prescribed for daily use in restorative materials. In this way, the need for renewal of restorations due to discoloration could be avoided.

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