scholarly journals Color change of composites on substrates treated with 0.2% chlorhexidine

2021 ◽  
Vol 69 ◽  
Author(s):  
Cristian SBARDELOTTO ◽  
Fernanda de Carvalho Panzeri PIRES-DE-SOUZA ◽  
Rafaella Tonani TORRIERI ◽  
Carolina Noronha Ferraz de ARRUDA
Keyword(s):  
Repeated Measures ◽  
Composite Resin ◽  
Color Change ◽  
Color Stability ◽  
Adhesive System ◽  
Color Changes ◽  
Composite Resin Restorations ◽  
Cie Lab ◽  
Self Etch ◽  
Resin Restorations

ABSTRACT Objective To evaluate the effect of 0.2% chlorhexidine digluconate (CHX) as a pretreatment of two types of adhesive systems on color stability of composite resin restorations. Methods Forty bovine teeth were prepared (6x6x2mm) and randomly divided into 4 groups (n=10): SB - total etch adhesive (Single Bond 2, 3M ESPE); SB + CHX - dentin pretreatment with CHX (30 seconds) followed by SB application; Adh - self-etch adhesive (AdheSE, Ivoclar Vivadent); Adh + CHX - pretreatment with CHX (30 seconds) + followed by Adh application. The teeth were restored with Filtek Z350XT (3M ESPE) and photoactivated for 40 seconds. Color measurements (EasyShade, VITA) were performed following the CIE Lab scale at baseline, 1 and 3 months (distilled water/37°C). The mean color change values (?E) and coordinates (L*, a* and b*) were statistically analyzed (2-way ANOVA, repeated measures, Bonferroni, p <.05). Results Results showed that there was a reddening and yellowing of the restorative material after 3 months, differing (p <.05) from 1 month. There was no difference (p >.05) regarding the treatment with CHX. Conclusions The 0.2% CHX adhesive pretreatment did not produce greater color changes in composite resin restorations irrespective of the type of adhesive system used. However, time had significant effect on the change, regardless of the substrate treatment.

scholarly journals Effect of surface sealant on the color stability of composite resin restorations

2011 ◽  
Vol 22 (5) ◽  
pp. 365-368 ◽  
Author(s):  
Fernanda Valentini ◽  
Simone Gomes Dias de Oliveira ◽  
Guilherme Zdradk Guimarães ◽  
Renata Pereira de Sousa Barbosa ◽  
Rafael Ratto de Moraes
Keyword(s):  
Repeated Measures ◽  
Composite Resin ◽  
Color Stability ◽  
Distilled Water ◽  
Repeated Measures Anova ◽  
Color Measurements ◽  
Composite Resin Restorations ◽  
Surface Sealant ◽  
Effect Of Surface ◽  
Resin Restorations

This study investigated the effect of sealant application on the color stability of composite resin restorations. Cavities in bovine incisors were restored with composite resin (Opallis; FGM) and the teeth were assigned to 4 groups (n=10). A sealant (Fill Glaze; Vigodent) was applied over the restorations of 2 groups. Baseline color measurements based on the CIEL*a*b* system were carried out using a spectrophotometer. Half the number of specimens was immersed in distilled water, and half was immersed in coffee 4 h/day. Color measurements were repeated after 1 h, 24 h, 7 days and 3 months. Data for each immersion solution were separately subjected to a two-way repeated measures ANOVA and Tukey’s test (α=0.05). For the group without sealant immersed in water, no significant differences were observed among the periods (p≥0.138), but the color was different compared with baseline (p<0.001). For the group with sealant application, the periods baseline, 1 h and 3 months presented similar results (p≥0.924). For groups immersed in coffee, when the sealant was not used, no significant differences were detected between the baseline and the periods 1 h and 24 h (p≥0.499), but the color changed significantly thereafter (p≤0.003). In the group with sealant, significant differences were detected for all periods compared with each other (p<0.001). In conclusion, application of sealant dramatically increased the staining of the restorations exposed to coffee.

scholarly journals Effect of Three Different Mouthrinses on Microleakage of Composite Resin Restorations with Two Adhesive Systems after Bleaching with 10% Carbamide Peroxide

2012 ◽  
Vol 13 (1) ◽  
pp. 16-22 ◽  
Author(s):  
Soodabeh Kimyai ◽  
Siavash Savadi Oskoee ◽  
Amir Ahmad Ajami ◽  
Mahmoud Bahari ◽  
Mehdi Abed Kahnamoui ◽  
...  
Keyword(s):  
Composite Resin ◽  
Resin Composite ◽  
Adhesive System ◽  
Adhesive Systems ◽  
Carbamide Peroxide ◽  
Etch And Rinse ◽  
Composite Resin Restoration ◽  
Bonferroni Test ◽  
Composite Resin Restorations ◽  
Resin Restorations

ABSTRACT Aim The aim was to evaluate the effects of Oral-B (OB), Listerine (LN) and Rembrandt Plus (RM) mouthrinses on microleakage of composite resin restorations bonded with two adhesive systems after bleaching with 10% carbamide peroxide. Materials and methods A total of 60 Cl V cavities were prepared on human premolars. The occlusal and gingival margins were placed 1 mm occlusal to and apical to CEJ respectively. The teeth were randomly divided into two groups based on the adhesive system used: Excite (EX) and Clearfil SE Bond (CSE) groups. After composite resin restoration of cavities, thermocycling and bleaching with 10% carbamide peroxide for 2 hours daily for 14 days, the teeth in each adhesive group were further subdivided into three subgroups and were immersed for 12 hours in the three OB, RM and LN mouthrinses. The teeth were then placed in 2% basic fuschin for 24 hours. After dissecting the teeth, microleakage was evaluated under a stereomicroscope at 16×. Data was analyzed with multifactor ANOVA and Bonferroni test at p < 0.05. Results Microleakage with EX was significantly higher than that with CSE (p = 0.009). Microleakage at gingival margins was significantly higher than that at occlusal margins (p = 0.15). Microleakage with OB was higher than that with LN (p = 0.02). However, there were no significant differences in microleakage between LN and RM (p = 1) and between RM and OB (p = 0.15). In addition, with the EX adhesive system, microleakage with OB was higher than that with LN and RM (p = 0.02). Conclusion In the present study, microleakage of composite resin restorations was influenced by the type of the adhesive system, mouthrinse type and the location of the cavity margin. Clinical significance Use of some mouthrinses, such as OB after bleaching can increase postrestoration microleakage of resin composite restorations bonded with etch-and-rinse adhesive systems. How to cite this article Ajami AA, Bahari M, Oskoee SS, Kimyai S, Kahnamoui MA, Rikhtegaran S, Ghaffarian R. Effect of Three Different Mouthrinses on Microleakage of Composite Resin Restorations with Two Adhesive Systems after Bleaching with 10% Carbamide Peroxide. J Contemp Dent Pract 2012;13(1):16-22.

scholarly journals Effect of Cavity Disinfection with Chlorhexidine on Marginal Gap of Class V Composite Restorations Bonded with a Universal Adhesive Using Self-Etch and Etch-and-Rinse Bonding Strategy

2020 ◽  
Author(s):  
Soodabeh Kimyai ◽  
Narmin Mohammadi ◽  
Mahmoud Bahari ◽  
Elahe Pesyanian ◽  
Farhood Pesyanian
Keyword(s):  
Composite Resin ◽  
Gap Size ◽  
Marginal Gap ◽  
Universal Adhesive ◽  
Class V ◽  
Etch And Rinse ◽  
The Mean ◽  
Composite Resin Restorations ◽  
Self Etch ◽  
Resin Restorations

Objectives: This in-vitro study aimed to evaluate the effect of cavity disinfection with chlorhexidine (CHX) on marginal gaps of Class V composite resin restorations bonded with a universal adhesive using self-etch and etch-and-rinse bonding strategy. Materials and Methods: Sixty sound human premolars were randomly assigned to two groups (n=30): group 1 (CHX) and group 2 (no CHX). Each group was divided into two subgroups (n=15) according to the bonding strategy of the universal adhesive (self-etch or etch-and-rinse). Class V cavities were prepared on the buccal surfaces of the teeth. The occlusal and gingival margins of the cavities were placed in enamel and dentin, respectively. In the first and second subgroups of both groups, the All-Bond Universal adhesive was applied with self-etch and etch-and-rinse bonding strategy, respectively. After restoration and thermocycling, the samples were sectioned, and marginal gaps at the gingival margins were measured in micrometer (µm) under a stereomicroscope. Two-way analysis of variance (ANOVA) was used to compare marginal gaps between the groups and the subgroups. Results: The mean marginal gap size was significantly affected by cavity disinfection (P=0.001) and bonding strategy (P=0.002). However, the interaction effect of these two factors on the mean marginal gap size was not significant (P=0.79). Conclusion: The use of CHX resulted in larger marginal gaps at the gingival margins of Class V composite resin restorations. Irrespective of disinfection, the self-etch bonding strategy resulted in larger marginal gaps compared to the etch-and-rinse bonding strategy.

scholarly journals Color Stability of the Bulk-Fill Composite Resins with Different Thickness in Response to Coffee/Water Immersion

2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
Sayna Shamszadeh ◽  
Seyedeh Mahsa Sheikh-Al-Eslamian ◽  
Elham Hasani ◽  
Ahmad Najafi Abrandabadi ◽  
Narges Panahandeh
Keyword(s):  
Composite Resin ◽  
Color Change ◽  
Imaging System ◽  
Water Immersion ◽  
Color Space ◽  
Color Stability ◽  
Composite Resins ◽  
Distilled Water ◽  
Color Changes ◽  
Post Hoc

We aimed to evaluate the color stability of bulk-fill and conventional composite resin with respect to thickness and storage media. Twenty specimens of a conventional composite resin (6 mm diameter and 2 mm thick) and 40 specimens of the bulk-fill Tetric EvoCeram composite resin at two different thicknesses (6 mm diameter and 2 mm thick or 4 mm thick,n=20) were prepared. The specimens were stored in distilled water during the study period (28 d). Half of the specimens were remained in distilled water and the other half were immersed in coffee solution 20 min/d and kept in distilled water between the cycles. Color changes (ΔE) were measured using the CIEL⁎a⁎b⁎color space and a digital imaging system at 1, 7, 14, and 28 days of storage. Data were analyzed using Two-way ANOVA and Tukey’s HSD post hoc test (P<0.05). Composite resins showed significant increase in color changes by time (bulk-fill > conventional;P<0.001). Coffee exhibited significantly more staining susceptibility than that of distilled water (P<0.001). There was greater color changes with increasing the increment thickness, which was significant at 14 (P<0.001) and 28 d (P<0.01). Color change of bulk-fill composite resin was greater than that of the conventional one after coffee staining and is also a function of increment thicknesses.

scholarly journals Can surface protection prevent damage in margins of composite resin restorations after simulated endogenous erosion?

2019 ◽  
Vol 18 ◽  
pp. e191462
Author(s):  
Luana Mendonça Dias ◽  
Janaina Emanuela Damasceno ◽  
Patricia Akemi Nishitani Shibasaki ◽  
Max José Pimenta Lima ◽  
Roberto Paulo Correia de Araújo ◽  
...  
Keyword(s):  
Composite Resin ◽  
Adhesive System ◽  
Negative Control ◽  
Marginal Adaptation ◽  
Glass Ionomer ◽  
Surface Protection ◽  
Resin Modified Glass Ionomer ◽  
Composite Resin Restorations ◽  
Resin Sealant ◽  
Resin Restorations

Aim: The study investigated the effect of using surface protection agents in the adaptation of external and internal margins of restorations subjected to simulated erosion. Methods: Cavities with margins in dentin were prepared in bovine incisors (n=120). Adhesive restorations were placed using a three-step etch&rinse adhesive system and nanofilled composite resin. The specimens were divided into four groups, according to the surface protection: negative control, topical application of fluoride (TAF), resin sealant and resin-modified glass ionomer varnish (RMGI varnish). Afterwards, they were divided into three sub-groups, according to the exposure to a simulated solution of gastric acid (DES) (5% HCl, pH=2,2) and subsequent remineralization (RE): negative control, 9 and 18 cycles of DES-RE. The evaluation of the tooth-restoration interface was performed on the internal and frontal images with the aid of a stereoscopic microscope (15x), and the percentage of continuous margins without adhesive failures was quantified. Results: In the external margins, only those groups with surface protection using sealants (resin and glass-ionomer) did not exhibit a significant decrease in the percentage of continuous margins after the erosive challenges. After 18 cycles of DES-RE, the use of resin-modified glass ionomer varnish resulted in the highest percentage of continuous margins. Conclusion: It was concluded that physically covering the surfaces with a sealing agent preserved the marginal adaptation of composite resin restorations exposed to endogenous erosive challenges.

scholarly journals Color Stability of Bulk Fill Composite Resins Submitted to Coffee Staining

2020 ◽  
Vol 24 (1) ◽  
Author(s):  
Beatriz Maria Arruda ◽  
Julio Cesar Bassi ◽  
Rafael Pino Vitti ◽  
Renata Siqueira Scatolin
Keyword(s):  
Analysis Of Variance ◽  
Composite Resin ◽  
Color Change ◽  
In Vitro Study ◽  
Color Stability ◽  
Composite Resins ◽  
Vitro Study ◽  
Change Analysis ◽  
Cie Lab

 Objective: The aim of this in vitro study was to evaluate the color stability of different bulk fill composite resins after extrinsic staining with coffee. Material and methods: Forty-eight disk-shaped specimens (6 mm diameter x 2 mm thick) of each composite resin were prepared for color change test. The composite resins were divided into 4 groups (n=12): one conventional composite resin (Filtek Z250) and three bulk-fill composite resins (Filtek Bulk Fill, Aura Bulk Fill, and Opus Bulk Fill). The samples were stained with 20 mL coffee solution for 7 days, with the solution being replaced every 24 h. The color change analysis was performed using a spectrophotometer, according to the CIE Lab formula. Data were analyzed using the Analysis of variance (ANOVA) and Tukey HSD tests (?=0.05). Results: The results revealed significant differences in color change among the composite resins tested (?<0.0001). The Aura Bulk Fill and Opus Bulk Fill showed the highest color change values. Conclusions: Thus, all the resins analyzed were susceptible to extrinsic staining with coffee, and the Filtek Bulk Fill showed the lowest color change value.

Clinical Effectiveness of Different Polishing Systems and Self-Etch Adhesives in Class V Composite Resin Restorations: Two-Year Randomized Controlled Clinical Trial

2017 ◽  
Vol 42 (1) ◽  
pp. 19-29 ◽  
Author(s):  
J-H Jang ◽  
H-Y Kim ◽  
S-M Shin ◽  
C-O Lee ◽  
DS Kim ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Composite Resin ◽  
Clinical Effectiveness ◽  
Controlled Clinical Trial ◽  
Randomized Controlled Clinical Trial ◽  
Class V ◽  
Randomized Controlled ◽  
Composite Resin Restorations ◽  
Self Etch ◽  
Resin Restorations

SUMMARY The aim of this randomized controlled clinical trial was to compare the clinical effectiveness of different polishing systems and self-etch adhesives in class V composite resin restorations. A total of 164 noncarious cervical lesions (NCCLs) from 35 patients were randomly allocated to one of four experimental groups, each of which used a combination of polishing systems and adhesives. The two polishing systems used were Sof-Lex XT (Sof), a multistep abrasive disc, and Enhance/Pogo (EP), a simplified abrasive-impregnated rubber instrument. The adhesive systems were Clearfil SE bond (CS), a two-step self-etch adhesive, and Xeno V (XE), a one-step self-etch adhesive. All NCCLs were restored with light-cured microhybrid resin composites (Z250). Restorations were evaluated at baseline and at 6, 12, 18, and 24 months by two blinded independent examiners using modified FDI criteria. The Fisher exact test and generalized estimating equation analysis considering repeated measurements were performed to compare the outcomes between the polishing systems and adhesives. Three restorations were dislodged: two in CS/Sof and one in CS/EP. None of the restorations required any repair or retreatment except those showing retention loss. Sof was superior to EP with regard to surface luster, staining, and marginal adaptation (p&lt;0.05). CS and XE did not show differences in any criteria (p&gt;0.05). Sof is clinically superior to EP for polishing performance in class V composite resin restoration. XE demonstrates clinically equivalent bonding performance to CS.

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