scholarly journals Influence of Energy Beverages on the Surface Texture of Glass Ionomer Restorative Materials

2017 ◽  
Vol 18 (10) ◽  
pp. 937-942 ◽  
Author(s):  
Khalid H Al-Samadani
Keyword(s):  
Surface Roughness ◽  
Surface Texture ◽  
Repeated Measures ◽  
Immersion Time ◽  
Glass Ionomer ◽  
Paired Data ◽  
Significance Level ◽  
Restorative Materials ◽  
Erosive Effect ◽  
Red Bull

ABSTRACT Background and objective The objective of the study was to find whether energy beverages have an erosive effect, leading to a risk in the clinical performance of glass ionomer restorative materials. Aim This study evaluated the influence of energy beverages on the surface texture of glass ionomer restorative materials. Materials and methods Glass ionomer materials used were Ionofil Plus AC, GC EQUIA, and Ketac Molar; energy beverages are Code Red, Red Bull, and Power Horse. Specimens prepared were discs of 8 mm diameter and 3 mm thickness; specimens from each material were evaluated following aging with Code Red, Red Bull, and Power Horse energy beverages. Distilled water was used as a control. The surface roughness (Ra) was assessed by surface scanning interferometry. The surface roughness values (∆Ra and Ra) were measured for each specimen. The data were analyzed statistically using multiple repeated measures [analysis of variance (ANOVA)] and paired data t-test (p < 0.05 was considered as the significance level). Results The surface roughness (∆Ra and Ra) values before and after aging using Code Red, Red Bull, and Power Horse energy beverages differ significantly for all the materials regardless of the immersion time (p < 0.05). All the materials showed roughness changes after immersion periods of 1 day, 1 week, and 1 month. Conclusion It can be concluded that all energy beverage solutions used in this study had an adverse effect on the surface roughness degradation of the tested glass ionomers with increasing immersion time. Clinical significance Energy beverages have an erosive effect on glass ionomer, which influences the clinical importance of the material; it also has anticarious property because it releases the fluoride. How to cite this article Al-Samadani KH. Influence of Energy Beverages on the Surface Texture of Glass Ionomer Restorative Materials. J Contemp Dent Pract 2017;18(10):937-942.

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.

scholarly journals Methacrylate peak determination and selection recommendations using ATR-FTIR to investigate polymerisation of dental methacrylate mixtures

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0252999
Author(s):  
António H. S. Delgado ◽  
Anne M. Young
Keyword(s):  
Repeated Measures ◽  
Light Exposure ◽  
Peak Height ◽  
Dihydrogen Phosphate ◽  
Difference Spectra ◽  
Significance Level ◽  
Noise Interference ◽  
Restorative Materials ◽  
Within Subjects ◽  
Urethane Dimethacrylate

Investigation of polymerisation kinetics using ATR-FTIR systems is common in many dental studies. However, peak selection methods to calculate monomer-polymer conversion can vary, consequently affecting final results. Thus, the aim of this study is to experimentally confirm which method is less prone to systematic errors. Three commercial restorative materials were tested–Vertise Flow (VF), Constic and Activa Bioactive Restorative Kids. Firstly, Attenuated Total Reflectance Fourier Transform Infra-Red (ATR-FTIR) (Spectrum One, Perkin-Elmer, UK) spectra of monomers were acquired—10-methacryloyloxy decyl dihydrogen phosphate (10-MDP), bisphenol-A glycidyl dimethacrylate (Bis-GMA), 2-hydroxyethyl methacrylate (HEMA), triethyelene glycol dimethacrylate (TEGDMA) and urethane dimethacrylate (UDMA) to investigate proportionality of methacrylate peak heights versus concentration. Spectral changes upon light exposure of 2 mm discs of the restorative materials (irradiated for 20 s, LED curing unit 1100–1330 mW/cm2) were assessed to study polymerisation kinetics (n = 3), with continuous acquisition of spectra, before, during and after light exposure. Peak differences and degrees of conversion (DC %) were calculated using 1320/1336, 1320/1350 and 1636/1648 cm-1 as reaction/reference peaks. Inferential statistics included a MANOVA and within-subjects repeated measures ANOVA design (5% significance level). Proportionality of methacrylate peak height to concentration was confirmed, with the 1320/1352 cm-1 peak combination showing the lowest coefficient of variation (8%). Difference spectra of the polymerisation reaction showed noise interference around the 1500–1800 cm-1 region. Across the different materials, DC % results are highly dependent upon peak selection (p<0.001), with higher variability associated to the 1636 cm-1. Significant differences in the materials were only detected when the 1320 cm-1 peak was used (p<0.05). Within the same materials, methods were significantly different for Constic and Activa (p<0.05). It is possible to conclude that the 1320 cm-1 peak is more adequate to assess polymerisation of methacrylates and is therefore recommended.

scholarly journals Effect of hydrogen peroxide application on color and surface roughness of two restorative materials

2017 ◽  
Vol 15 (3) ◽  
pp. 185
Author(s):  
Dilcele Silva Moreira Dziedzic ◽  
Lucia Helena Ramos da Silva ◽  
Bruna Luiza do Nascimento ◽  
Marina Samara Baechtold ◽  
Gisele Maria Correr ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Surface Roughness ◽  
Repeated Measures ◽  
Glass Ionomer Cement ◽  
Color Variation ◽  
Glass Ionomer ◽  
Peroxide Bleaching ◽  
Bleaching Procedure ◽  
Resin Modified Glass Ionomer ◽  
Ionomer Cement

Aim: This study investigated the effect of an in-office bleaching technique on lightness, color and surface roughness of two commercially available materials: a resin-modified glass-ionomer cement and a nanohybrid resin composite. Methods: Twelve disk-shaped specimens were prepared with both materials. The samples were bleached with 35% hydrogen peroxide. Bleaching was tested initially onto a smooth surface and later onto a polished one of the same specimens. The effect of the treatments on lightness and color was verified with a spectrophotometer. Surface roughness was measured with a digital surface roughness tester. The data were statistically analyzed by repeated measures ANOVA and post hoc Tukey’s test (alpha = 0.05). Results: Significant variation in lightness and color was observed on the resin-modified glass-ionomer cement after the first bleaching procedure. Roughness increased significantly only after polishing the resin-modified glass-ionomer cement surface. Composite color variation was evident in the last observation period, but roughness and lightness variation due to bleaching and polishing was not significant. Conclusion: The bleaching treatment caused significant color alterations on the materials tested. This study observed that the application of in-office bleaching onto the glass-ionomer cement promoted clinically observable color alteration, and polishing after bleaching is contraindicated for this material.

scholarly journals Effect of incorporation of nano-hydroxyapatite particles on the clinical performance of conventional and resin-modified glass ionomer cement in class V cavities: split-mouth, randomized controlled trial

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Zeinab M. Zaki ◽  
Maha A. Niazy ◽  
Mohamed H. Zaazou ◽  
Shaymaa M. Nagi ◽  
Dina W. Elkassas
Keyword(s):  
Surface Texture ◽  
Clinical Performance ◽  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Class V ◽  
Resin Modified Glass Ionomer ◽  
Restorative Materials ◽  
Significant Change ◽  
Ionomer Cement

Abstract Background The aim of this study was to compare the clinical performance of Nano-hydroxyapatite-modified conventional glass ionomer cement (NHA-GIC) and Nano-hydroxyapatite-modified resin-modified glass ionomer cement (NHA-RMGIC) with conventional glass ionomer (CGIC) and resin-modified glass ionomer (RMGIC) in the treatment of caries class V cavities. Sixty patients with at least two cervical caries lesions participated in this study. A total of 120 class V cavities were prepared and then restored using different restorative materials. Restorations were clinically evaluated according to modified United States Public Health Service criteria at baseline and after 3, 6 and 9 months. Results There was no statistically significant difference in the clinical performance of the different restorative materials at any of the follow-up periods. However, throughout the study period there was a statistically significant change in the color match, surface texture and marginal integrity in NHA-GIC. A statistically significant change in the surface texture and marginal integrity was found in GIC. On the other hand, there was only a statistically significant change in surface texture in NHA-RMGIC. Conclusions All tested restorative materials, control (CGIC and RMGIC) as well as experimental (NHA-GIC and NHA-RMGIC), exhibited comparable clinical performance after 9 months follow-up.

A Modified Stethoscope to Assist in the Identification of Tooth Coloured Restorations

1994 ◽  
Vol 34 (1) ◽  
pp. 51-53
Author(s):  
J F Prinz
Keyword(s):  
Surface Roughness ◽  
Surface Texture ◽  
Simple Technique ◽  
Epidemiological Studies ◽  
The Body ◽  
Post Mortem ◽  
Fissure Sealants ◽  
Small Tooth ◽  
Restorative Materials ◽  
The Difference

Forensic odontologists are often called upon to assist in the identification of bodies. Since identification of the body relies on comparison of the post-mortem chart with the ante-mortem record it is important that all restorations present in the deceased's teeth are identified and correctly charted. If a restoration is present in an ante-mortem record then its absence in the post-mortem chart means that the two records cannot belong to the same person, However, tooth-coloured restorations can be difficult to identify, especially in the less than ideal conditions under which the odontologist may have to work. This study was designed to evaluate a simple technique for identifying tooth-coloured restorations, exploiting the difference between the surface roughness of restorative materials and that of the surrounding tooth substance. A conventional dental probe was substituted for the bell of a stethoscope. Differences in the surface texture of the tooth are reflected in changes in the sound heard by the examiner. The modified stethoscope is a useful and easily fabricated device, which may reduce the likelihood of small tooth-coloured restorations going unnoticed in post-mortem examinations. The ability to detect fissure sealants using the device may also prove useful in epidemiological studies.

scholarly journals The Assessment of the Surface Status Following the Action of Some Acidic Beverages on Indirect Restorative Materials

2018 ◽  
Vol 55 (1) ◽  
pp. 129-135
Author(s):  
Nicoleta Tofan ◽  
Sorin Andrian ◽  
Simona Stoleriu ◽  
Irina Nica ◽  
Antonia Moldovanu ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Artificial Saliva ◽  
Study Groups ◽  
Composite Resins ◽  
Restorative Materials ◽  
Acidic Beverages ◽  
Control Samples ◽  
Red Bull

The study aimed to assess the changes of the surface roughness induced by some acidic beverages on indirect restorative materials by using profilometry. Twenty samples of three composite resins (Ceramage, SR Adoro, Luna-Wing) and three ceramics (IPS In Line, Hera Ceram, Reflex Dimension) immersed in three acidic beverages (Red Bul, wine, Coca Cola), for 5 minutes, three times daily, 14 days. The control samples were immersed in artificial saliva during the study periode. After the end of the erosive cycles and before to determine the surface roughness of the samples in the study groups, all the samples were immersed in artificial saliva for 18 hours. The surface roughness was determined in relation to the baseline surface using profilometer Perthometer_M1 (Mahr Gottingen GmbH, Germany). The immersion of the indirect restorative materials tested in the three acidic beverages lead has resulted to changes in their surface roughness. The most aggressive was wine, followed by Coca Cola, and Red Bull.

scholarly journals A Comparison Of Surface Roughness Values of Various Restorative Materials Immersed in Pedodontic Pre- and Probiotics

2021 ◽  
Vol 11 (6) ◽  
pp. 14389-14402
Keyword(s):  
Surface Roughness ◽  
Artificial Saliva ◽  
Glass Ionomer Cement ◽  
In Vitro Study ◽  
High Viscosity ◽  
Inorganic Filler ◽  
Glass Ionomer ◽  
Sem Images ◽  
Restorative Materials

The present in vitro study aims to evaluate pre- and probiotic liquids' effect on surface roughness values of restorative materials after one month of immersion. 360 disc-shaped samples (5mm x 2mm) were prepared from two types of glass-ionomer cements (GIC), a resin-modified GIC, a compomer, three bulk-fill composites, and one microhybrid composite. After the surfaces were polished, samples were divided into three groups (n = 15) and immersed for 10 minutes daily for one month in either a probiotic sachet, kefir (prebiotic), or artificial saliva. After that, the surface roughness values were measured by a profilometer. Scanning electron microscopy (SEM) evaluations of one sample from tested materials were also added. Statistical data were analyzed using one-way ANOVA and Bonferroni–Dunn tests. One of the GIC materials had significantly rougher surfaces in the probiotic sachet, followed by the compomer (p < 0.05). The compomer showed the roughest surfaces after immersion in kefir, followed by the microhybrid composite (Z250). Probiotic sachets formed rougher surfaces than kefir among samples. SEM images revealed the inorganic filler structures and microcracks on the surfaces. A high-viscosity glass-ionomer cement, Equia Fil Forte, and other composite-based materials tested in the present study can be used in pediatric patients who use pre- and probiotic supplements.

Effect of finishing technique on the microleakage and surface texture of resin-modified glass ionomer restorative materials

2000 ◽  
Vol 28 (5) ◽  
pp. 367-373 ◽  
Author(s):  
A.D. Wilder ◽  
E.J. Swift ◽  
K.N. May ◽  
J.Y. Thompson ◽  
R.A. McDougal
Keyword(s):  
Surface Texture ◽  
Glass Ionomer ◽  
Resin Modified Glass Ionomer ◽  
Restorative Materials
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