scholarly journals Quantification of color variation of restorative materials used on pediatric dentistry after pigmentation

2015 ◽  
Vol 63 (4) ◽  
pp. 383-388
Author(s):  
Luísa Bandeira Pires Monteiro LOPES ◽  
Andreia Sofia Lopes de ARAÚJO ◽  
Virginia Barreiros MILAGRE
Keyword(s):  
Composite Resin ◽  
Color Change ◽  
Artificial Saliva ◽  
Pediatric Dentistry ◽  
Color Variation ◽  
Control Group ◽  
Chocolate Milk ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Restorative Materials

Objective: To quantify the color variation of two glass ionomer cements and a composite resin used in pediatric dentistry, after being immersed in different pigments agents. Methods: Using two glass ionomer cements (Ketac(tm) Molar and Photac(tm) Fil) and a microhybrid composite resin (Filtek(tm) z250), were produced 40 disks of each material (10 mm in diameter and 2 mm thick). The samples were soaked in artificial saliva (control group), coke, peach Ice Tea(r) and chocolate milk, for 72 hours in an oven at 37ºC. After this period, the samples were washed in 50 ml of distilled water. Finally, using the spectrophotometer, it was made the reading of results. The color change was measured according to the CIE L * a * b * system. Color changes were statistically analyzed using parametric one-way ANOVA and ANOVA with Welch correction, the nonparametric Kruskal-Wallis tests and post-hoc Tukey and Dunnet T3 with p≤ 0.05. Results: The immersion of restorative materials in different pigmentation agents caused a significant color variation on the samples. The agent who presented higher results was the Peach Ice Tea(r). The chocolate milk was the fluid with lowest pigmentation capacity of all restorative materials under study. The greater color variation was found on the Ketac(tm) Molar submerged in Coca-Cola(r) and the smallest on the Filtek(tm) z250 in chocolate milk. Conclusion: All restorative materials were shown to be susceptible to pigmentation by all agents. The Filtek(tm) z250 proved to have better color stability, followed by Photac(tm) Fil and finally by Ketac(tm) Molar.

Effects of plaque disclosing agents on esthetic restorative materials used in pediatric dentistry

2005 ◽  
Vol 29 (2) ◽  
pp. 143-146 ◽  
Author(s):  
Débora Maki Hino ◽  
Fausto Medeiros Mendes ◽  
José Luiz Guimarães de Figueiredo ◽  
Katya Luce Moura Naves Gomide ◽  
José Carlos Pettorossi Imparato
Keyword(s):  
Composite Resin ◽  
Color Change ◽  
Color Stability ◽  
Pediatric Dentistry ◽  
Fluorescent Dye ◽  
Glass Ionomer ◽  
Basic Fuchsin ◽  
Resin Modified Glass Ionomer ◽  
Restorative Materials ◽  
Materials Used

The aim of study was to evaluate the color stability of tooth-colored restorative materials usually used in pediatric dentistry after the application of two plaque disclosing agents. Twenty specimens of each material: a resin-modified glass ionomer, a composite resin and an ion-releasing composite resin, were prepared. Baseline color evaluation was performed, samples were exposed to the plaque disclosing agents: a basic fuchsin solution and a fluorescent dye, and new color evaluations were made. The resin-modified glass ionomer stained with basic fuchsin presented the greatest color change in the present study, and the fluorescent dye did not show statistically significant changes among the restorative materials. In conclusion, basic fuchsin dyes should be carefully used in children with a great number of tooth-colored restorations. J Clin Pediatr Dent 29(2): 143-146, 2005

scholarly journals Does the temperature of beverages affect the surface roughness, hardness, and color stability of a composite resin?

2013 ◽  
Vol 07 (02) ◽  
pp. 165-171 ◽  
Author(s):  
Duygu Tuncer ◽  
Emel Karaman ◽  
Esra Firat
Keyword(s):  
Surface Roughness ◽  
Composite Resin ◽  
Color Change ◽  
Artificial Saliva ◽  
Color Stability ◽  
The Other ◽  
Control Group ◽  
Baseline Values ◽  
Hardness Values ◽  
Properties Of Composites

ABSTRACT Objective: To investigate the effect of beverages′ temperature on the surface roughness, hardness, and color stability of a composite resin. Materials and Methods: Fifty specimens of the Filtek Z250 composite (3M ESPE, Dental Products, St.Paul, MN, USA) were prepared and initial roughness, microhardness, and color were measured. Then the specimens were randomly divided into five groups of 10 specimens each: Coffee at 70°C, coffee at 37°C, cola at 10°C, cola at 37°C, and artificial saliva (control). After the samples were subjected to 15 min × 3 cycles per day of exposure to the solutions for 30 days, the final measurements were recorded. Results: After immersion in beverages, the artificial saliva group showed hardness values higher than those of the other groups (P < 0.001) and the microhardness values were significantly different from the initial values in all groups except for the control group. Both cola groups showed roughness values higher than the baseline values (P < 0.05), while the other groups showed values similar to the baseline measurements. When ΔE measurements were examined, the 70°C coffee group showed the highest color change among all the groups (P < 0.05). Conclusion: High-temperature solutions caused alterations in certain properties of composites, such as increased color change, although they did not affect the hardness or roughness of the composite resin material tested.

Influence of Chemical Degradation on the Surface Properties of Nano Restorative Materials

2014 ◽  
Vol 39 (3) ◽  
pp. E109-E117 ◽  
Author(s):  
AB de Paula ◽  
SBP de Fúcio ◽  
RCB Alonso ◽  
GMB Ambrosano ◽  
RM Puppin-Rontani
Keyword(s):  
Orange Juice ◽  
Repeated Measures ◽  
Negative Impact ◽  
Artificial Saliva ◽  
Chemical Degradation ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Storage Media ◽  
Restorative Materials

SUMMARY Objectives The aim of this in vitro study was to investigate the effect of chemical degradation on the surface roughness (Ra) and hardness (Knoop hardness number [KHN]) of nano restorative materials. Methods Disc-shaped specimens (5-mm diameter; 2-mm thick) of Filtek Z350 and TPH Spectrum composites and the Vitremer and Ketac Nano light-curing glass ionomer cements were prepared according to the manufacturers' instructions. After 24 hours, polishing procedures were performed and initial measurements of Ra and KHN were taken. The specimens were divided into 12 groups (n=10) according to material and storage media: artificial saliva, orange juice, and Coca-Cola. After 30 days of storage, the specimens were reevaluated for Ra and KHN. The pH values of the storage media were measured weekly. Data were tested for significant differences by repeated-measures three-way analysis of variance and Tukey tests (p&lt;0.05). Results Composites were found to present lower roughness values and higher hardness values than the ionomeric materials under all storage conditions. After degradation, the KHN of all experimental samples decreased significantly, while the Ra of the ionomeric materials increased, depending on the media, with a markedly negative impact of Coca-Cola and orange juice. There was no difference among the storage media for Filtek Z350 with regard to the KHN values. Nanofillers did not show any influence on the roughness and hardness of resin-modified glass ionomer cements and resin composites concerning their degradation resistance.

Study Regarding the Influence of Different Antiseptic Mouthwashes on Surface Roughness of Traditional Glass Ionomer Cements

2015 ◽  
Vol 660 ◽  
pp. 165-169
Author(s):  
Simona Stoleriu ◽  
Sorin Andrian ◽  
Galina Pancu ◽  
Irina Nica ◽  
Andrei Victor Sandu ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Vickers Hardness ◽  
Artificial Saliva ◽  
Surface Hardness ◽  
Study Groups ◽  
Control Group ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Microhardness Tester

The aim of the study was to evaluate the surface hardness of two different traditional glass ionomer cements after their exposure to two commercial oral rinsing solutions. Fuji IX GP (GC Corporation, Tokyo, Japan) and Ketac Molar Easymix (3MESPE, Germany) were used in the study. Twenty-one cement samples of each material were split in three groups. In control group the samples were stored in artificial saliva (AFNOR NF S90-701) for 14 days. In groups 2 and 3 the samples of each material were immersed in Listerine and in Corsodyl two times on a day for 14 days. Between the immersion periods the samples were stored in artificial saliva. The samples were subjected to microhardness evaluation using digital microhardness tester (Micro-Vickers Hardness System CV-400DMTM, CV Instruments Namicon). Significant results were obtained when compared the surface hardness of both glass ionomer cements after their immersion in Listerine and in Corsodyl to control group. The surface hardness of Fuji IX in control and in study groups was significantly higher when compared to Ketac Molar Easymix In the conditions of the study, Listerine and Corsodyl decreased the surface hardness of Fuji IX GP and Ketac Molar Easymix glass ionomer cements.

scholarly journals Effects of Bleaching Agents on the Microhardness and Surface Roughness of Bulk Fill Composites

2017 ◽  
Vol 8 (3) ◽  
pp. 196-201 ◽  
Author(s):  
K Pradeep
Keyword(s):  
Surface Roughness ◽  
Physical Properties ◽  
Composite Resin ◽  
Artificial Saliva ◽  
Composite Resins ◽  
Control Group ◽  
Hardness Tester ◽  
Crucial Effect ◽  
Restorative Materials ◽  
The Mean

ABSTRACT Aim The aim was to compare the effect of 10 and 20% carbamide peroxide (CP) on microhardness (MHN) and surface roughness of two commercially available bulk fill composites (X-tra fill Bulk Fill and Tetric EvoCeram Bulk Fill). Materials and methods A total of 50 specimens with both type composites were prepared using brass molds of inner diameter 10 mm and a height of 4 mm. Each type of composite was further divided into three groups, control group stored in artificial saliva for 14 days, other groups bleached with 10 and 20% CP respectively, for 14 days. Microhardness of the composite resin was tested with a Vickers hardness tester, whereas surface roughness was tested with profilometer. Results All the analysis was performed using Statistical Package for the Social Sciences version 18. The value of p < 0.05 was considered statistically significant. Both 10 and 20% CP significantly reduced MHN of experimental composite resins. However, the mean surface roughness was significantly higher in X-tra fill Bulk Fill than Tetric EvoCeram Bulk Fill at 20% CP concentration. The mean MHN of Tetric EvoCeram was reduced when compared with X-tra fill at 20% CP. Conclusion There was a significant reduction in the MHN of restorative materials observed after exposure to CP under a clinically simulated bleaching regimen. However, increase in surface roughness was seen only at 20% CP. Clinical significance The physical properties, such as MHN and surface roughness have a crucial effect on the longevity of restorations and, moreover, on the esthetic demands of patients, but they may be compromised by bleaching treatments. The aim of this research paper was to assess the reaction of home bleaching agents on the physical properties of two Bulk Fill composite resin restorative materials. How to cite this article Francis G, Pradeep K, Ginjupalli K, Saraswathi V. Effects of Bleaching Agents on the Microhardness and Surface Roughness of Bulk Fill Composites. World J Dent 2017;8(3):196-201.

scholarly journals Effects of Different Pediatric Drugs on the Color Stability of Various Restorative Materials Applicable in Pediatric Dentistry

2017 ◽  
Vol 2017 ◽  
pp. 1-5
Author(s):  
Tamer Tüzüner ◽  
Sedanur Turgut ◽  
Ozgul Baygin ◽  
Nagehan Yilmaz ◽  
Elif Bahar Tuna ◽  
...  
Keyword(s):  
Composite Material ◽  
Artificial Saliva ◽  
Color Stability ◽  
Pediatric Dentistry ◽  
Restorative Material ◽  
Glass Ionomer ◽  
Pediatric Drug ◽  
Color Changes ◽  
Restorative Materials ◽  
Material Factor

Background. The chronic recommendation of pediatric drugs could exhibit erosive and cariogenic problems.Objective. To evaluate the effects of different pediatric drugs on the color stability of various restorative materials.Methods. Five specimens (1 mm × 3 mm) were prepared and immersed in ten different pediatric drugs and agitated every 8 hours daily for 2 min up to 1 week. Between immersion periods, the samples were stored in artificial saliva. After 1-week period,ΔE⁎values were calculated. Two-way ANOVA and Fisher’s LSD test were used for statistical analysis at a level ofp<0.05.Results.ΔE⁎values were only significantly influenced by restorative material factorp<0.001and varied in the range of 2.08 and 6.55 units for all drugs/restorative materials. The highestΔE⁎was found in Ferrosanol B-composite(6.55±1.38)and the lowest one was found in Dolven-glass ionomer(2.08±0.40)pairwise. The most prominentΔE⁎value elevations were obtained in composite material compared to the compomer and/or glass ionomers in Macrol, Ferrosanol B, and Ventolin (p<0.001; for all) and also for other drugsp<0.05. Dolven exhibited significantly higher values compared to Augmentinp=0.021, Macrolp=0.018, and Ventolinp=0.013in compomer group.Conclusion. The clinically perceptible color changes for tested composite/pediatric drug pairwise can be more problematic than compomer and glass ionomers in pediatric dentistry.

scholarly journals Fluoride Release and Recharge Properties of Several Fluoride-Containing Restorative Materials

2020 ◽  
Vol 47 (2) ◽  
pp. 196-204
Author(s):  
Dongyun Lee ◽  
Jongsoo Kim ◽  
Miran Han ◽  
Jisun Shin
Keyword(s):  
Composite Resin ◽  
Fluoride Release ◽  
Restorative Material ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Control Groups ◽  
Restorative Materials ◽  
Clinical Conditions

The aim of the study is to compare the fluoride release and recharge properties of glass ionomer cements and ‘alkasite’.<br/>Specimens of two glass ionomer cements (Fuji Ⅸ GP and Riva Self Cure), ‘alkasite’ restorative material (Cention N) and composite resin (Filtek<sup>TM</sup> Z350XT) were prepared. The fluoride release of each specimen was measured for 28 days. Thereafter, 1.23% acidulated phosphate fluoride (APF) gel was applied to experimental groups. No treatment was performed on control groups. The fluoride release was measured for additional 7 days to evaluate the fluoride recharge properties of each materials.<br/>The fluoride release was highest in Riva Self Cure, followed by Fuji Ⅸ GP, Cention N (<i>p</i> < 0.05). Fluoride release of Cention N was measured to be approximately 49% of Fuji Ⅸ GP’s. After the application of 1.23% APF gel, increases in fluoride release were observed in Riva Self Cure, Fuji Ⅸ GP and Cention N (<i>p</i> < 0.05). Fluoride recharge was observed in Cention N as well as in glass ionomer cements. Further studies are required to evaluate the anti-cariogenic properties of Cention N at clinical conditions.

scholarly journals Fluoride Release and Uptake Capability of Glass-ionomer Cements and Compomers Used as Dental Restorative Materials

2019 ◽  
Vol 56 (3) ◽  
pp. 548-553
Author(s):  
Zsigmond Lorand Makkai ◽  
Melinda Szekely ◽  
Zita Fazakas ◽  
Levente Mester Nagy ◽  
Kinga Matyas Barta ◽  
...  
Keyword(s):  
Artificial Saliva ◽  
Glass Ionomer Cement ◽  
Treated Group ◽  
Control Group ◽  
Fluoride Ion ◽  
Fluoride Release ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Control Groups ◽  
Secondary Caries

Dental caries and secondary caries are the most common problems in dentistry. Many studies provided evidence for the anticariogenic effect of fluorides. The incidence of secondary caries is decreased in teeth restored with fluoride releasing materials. The purpose of the present in vitro study is to evaluate the fluoride release and uptake capability of two glass-ionomer cements and two compomers. A total number of 60 specimens were prepared according to the manufacturer�s instructions using silicone molds. The specimens were transferred in plastic containers containing artificial saliva (pH=7), incubated at 37�C for 24 h and divided in three subgroups: control group, varnish treated group and dentifrice treated group. The fluoride ion content was measured on five times during a period of 30 days using an Orion 720A fluoride meter with 9609 BN fluoride ion electrode. The self-curing glass-ionomer cement released the highest amounts of fluoride ions at the beginning and after the one month study period. The samples of the four materials tested in the varnish treated groups showed significant differences compared to their control groups on the second day. Dentifrice treated groups did not show significant differences compared to their control groups, except values measured after 30 days. Application of fluoride varnish produced an increase of fluoride release for the first 24 h in case of all materials. However, results suggest that the use of fluoridated dentifrice would be more effective in caries prevention due to their fluoride uptake capability.

scholarly journals Effect of Zirconia and Alumina Fillers on the Microstructure and Mechanical Strength of Dental Glass Ionomer Cements

2016 ◽  
Vol 10 (1) ◽  
pp. 58-68 ◽  
Author(s):  
Júlio C. M. Souza ◽  
Joel B. Silva ◽  
Andrea Aladim ◽  
Oscar Carvalho ◽  
Rubens M. Nascimento ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Cycling ◽  
Resin Composite ◽  
Artificial Saliva ◽  
Glass Ionomer Cement ◽  
Control Group ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Inorganic Particles ◽  
Resin Modified Glass Ionomer

Background: Glass-ionomer cements perform a protective effect on the dentin-pulp complex considering the F ions release and chemical bonding to the dental structures. On the other hand, those materials have poor physic-mechanical properties in comparison with the restorative resin composite. The main aim of this work was to evaluate the influence of zirconia and/or alumina fillers on the microstructure and strength of a resin modified glass-ionomer cement after thermal cycling. Methods: An in vitro experimental study was carried out on 9 groups (n = 10) of cylindrical samples (6 x 4 mm) made from resin modified glass-ionomer (Vitremer, 3M, USA) with different contents of alumina and/or zirconia fillers. A nano-hybrid resin composite was tested as a control group. Samples were mechanically characterized by axial compressive tests and electron scanning microscopy (SEM) coupled to energy dispersive X-ray spectrophotometry (EDS), before and after thermal cycling. Thermal cycling procedures were performed at 3000, 6000 and 10000 cycles in Fusayama´s artificial saliva at 5 and 60 oC. Results: An improvement of compressive strength was noticed on glass-ionomer reinforced with alumina fillers in comparison with the commercial glass ionomer. SEM images revealed the morphology and distribution of alumina or zirconia in the microstructure of glass-ionomers. Also, defects such as cracks and pores were detected on the glass-ionomer cements. The materials tested were not affected by thermal cycling in artificial saliva. Conclusion: Addition of inorganic particles at nano-scale such as alumina can increase the mechanical properties of glass-ionomer cements. However, the presence of cracks and pores present in glass-ionomer can negatively affect the mechanical properties of the material because they are areas of stress concentration.

Comparative Evaluation of Erosive Potential of Different Pediatric Liquid Medications on Primary Tooth Enamel and Tooth Coloured Restorative Materials

2021 ◽  
Vol 13 ◽  
pp. 30-36
Author(s):  
Dr. Sara Elizabeth Paul ◽  
Dr. Divya Reddy ◽  
Dr. Santhosh T Paul ◽  
Dr. Shuhaib A Rahman
Keyword(s):  
Surface Roughness ◽  
Composite Resin ◽  
Tooth Enamel ◽  
Artificial Saliva ◽  
Glass Ionomer Cement ◽  
Titratable Acidity ◽  
Primary Tooth ◽  
Glass Ionomer ◽  
Restorative Materials ◽  
Ionomer Cement

Aim: The aim of the present study was to investigate the erosive potential of pediatric liquid analgesics and their effect on primary enamel, glass ionomer and composite resin restorations. Methods: Selected medications were analysed in triplicates with regard to pH and titratable acidity. Eighteen specimens each of glass ionomer, composite resin and primary enamel were prepared and stored in 100% relative humidity at 37ºC for 7 days. After baseline surface roughness analysis using 3D optical profilometer, specimens were randomly distributed according to immersion media into three groups (n=6) as follows: Group 1- Calpol® ( Paracetamol), Group 2–Ibugesic® (Ibuprofen) and Group 3 –Artificial saliva (control). The specimens were subjected to immersion cycles for 5 days following which surface roughness was measured. Data were analysed using analysis of variance (ANOVA) and Tukey’s test. Results: Ibugesic ® showed the lowest titratable acidity and mean pH when compared to Calpol®. The glass ionomer cement exhibited highest surface roughness followed by primary enamel and composite resin both at baseline and after immersion. The highest mean surface roughness change for glass ionomer cement was observed when exposed to Ibugesic® (0.04 ± 0.13) when compared to Calpol® (0.006 ± 0.01) and artificial saliva (0.035 ± 0.05). Conclusions: Although minimal, the restorative materials and primary enamel subjected to acidic medicines showed surface roughness changes and among the pediatric liquid analgesics tested, Ibugesic® was observed to be highly erosive with lower pH and high titratable acidity

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