scholarly journals Effects of Surface Sealants on Color Stability of a Supra-Nano Filled Resin Composite

2021 ◽  
Vol 27 (1) ◽  
pp. 73-80
Author(s):  
Özge ÇELİKSÖZ ◽  
Nasibe Aycan YILMAZ
Keyword(s):  
Resin Composite ◽  
Color Stability ◽  
Surface Sealants

scholarly journals Color and opacity of composites protected with surface sealants and submitted to artificial accelerated aging

2012 ◽  
Vol 06 (01) ◽  
pp. 024-033 ◽  
Author(s):  
Fabiano Gamero Aguilar ◽  
Lucas da Fonseca Roberti Garcia ◽  
Diogo Rodrigues Cruvinel ◽  
Ana Beatriz Silva Sousa ◽  
Fernanda de Carvalho Panzeri Pires-de-Souza
Keyword(s):  
Accelerated Aging ◽  
Color Stability ◽  
Scanning Electronic Microscopy ◽  
Electronic Microscopy ◽  
Surface Protection ◽  
Before And After ◽  
Color Similarity ◽  
Surface Irregularities ◽  
Surface Sealants ◽  
Color Alteration

ABSTRACTObjectives: To evaluate the color similarity, stability and opacity of composites (TPH, Charisma, and Concept, shade A2) protected with surface sealants (Fortify Plus and Biscover) and cyanoacrylate (Super Bonder).Methods: Forty specimens of each composite were made and separated into 4 groups (n=10) according to the surface protection: GI - without sealant; GII - cyanoacrylate; GIII - Fortify Plus; GIV - Biscover. Color and opacity readings were taken before and after Artificial Acelerated Aging (AAA) and the values obtained for color stability were submitted to statistical analysis by 2-way ANOVA and Bonferroni’s test (P<.05). The values acquired for color similarity were submitted to 1-way ANOVA and Tukey’s test (P<.05). The specimen sufaces were compared before and after AAA using Scanning Electronic Microscopy (SEM).Results: Studied composites did not present the same values for the coordinates L*, a* and b * before AAA, indicating that there was no color similarity among them. All composites presented color alteration after AAA with clinically unacceptable values. Protected groups presented lower opacity variation after AAA, in comparison with the control goup. SEM evaluation demonstrated that AAA increased the surface irregularities in all of the studied groups.Conclusion: Surface sealants were not effective in maintaining composite color, but were able to maintain opacity. (Eur J Dent 2012;6:24-33)

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

Effect of Surface Sealants and Polishing Time on Composite Surface Roughness and Microhardness

2018 ◽  
Vol 43 (4) ◽  
pp. 408-415 ◽  
Author(s):  
VC Ruschel ◽  
VS Bona ◽  
LN Baratieri ◽  
HP Maia
Keyword(s):  
Surface Roughness ◽  
Composite Resin ◽  
Resin Composite ◽  
Composite Surface ◽  
Force Microscopy ◽  
Atomic Force ◽  
Surface Sealants ◽  
Post Hoc ◽  
Surface Sealant ◽  
Effect Of Surface

SUMMARY The objective of this study was to evaluate the effect of surface sealants and polishing delay time on a nanohybrid resin composite roughness and microhardness. Eighty disc specimens were made with a nanohybrid resin (Esthet-X HD, Dentsply). The specimens were divided into two groups (n=40) according to polishing time: immediate, after 10 minutes; delayed, after 48 hours. Each group was subdivided into four groups (n=10), according to the surface treatment: CG, control–rubber points (Jiffy Polishers, Ultradent); PP, rubber points + surface sealant (PermaSeal, Ultradent); PF, rubber points + surface sealant (Fortify, Bisco); PB, rubber points + surface sealant (BisCover, Bisco). Surface roughness (Ra) and microhardness (50 g/15 seconds) were measured. Surface morphology was analyzed by scanning electron microscopy and atomic force microscopy. The data were analyzed statistically using one-way analysis of variance and the Games-Howell post hoc test (α=0.05). PermaSeal roughness (G2) in the delayed polishing group was significantly higher (p=0.00) than that of the other groups. No difference was observed among the groups between immediate and delayed polishing (p=1.00), except for PermaSeal (p=0.00). Moreover, PermaSeal showed the lowest microhardness values (p=0.00) for immediate polishing. Microhardness was higher at delayed polishing for all the surface treatments (p=0.00) except Fortify (p=0.73). Surface smoothness similar to polishing with rubber points was achieved when surface sealants were used, except for PermaSeal surface sealant, which resulted in a less smooth resin composite surface. However, surface sealant application did not significantly improve composite resin microhardness.

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.

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