Evaluation of Surface Roughness Characteristics Using Atomic Force Microscopy and Inspection of Microhardness Following Resin Infiltration with Icon<sup>®</sup>

Gurdogan, Elif Beril; Ozdemir-Ozenen, Didem; Sandallı, Nüket

doi:10.1111/jerd.12279

Cited by 29 publications

(44 citation statements)

References 35 publications

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“…The rapidly increasing number of parameters was called "the parameter rash" by Whitehouse, in 1982 already [21]. The arithmetical mean roughness value (R a ) is the most commonly used parameter for in vitro and in vivo surface roughness evaluation [22][23][24][25][26][27]. While R a describes the roughness along a two-dimensional profile, S a is the arithmetical mean deviation of surface roughness, and characterizes the surface roughness three-dimensionally [20].…”

Section: Introductionmentioning

confidence: 99%

Predictability of Microbial Adhesion to Dental Materials by Roughness Parameters

et al. 2019

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Microbial adhesion to intraoral biomaterials is associated with surface roughness. For the prevention of oral pathologies, smooth surfaces with little biofilm formation are required. Ideally, appropriate roughness parameters make microbial adhesion predictable. Although a multitude of parameters are available, surface roughness is commonly described by the arithmetical mean roughness value (Ra). The present study investigates whether Ra is the most appropriate roughness parameter in terms of prediction for microbial adhesion to dental biomaterials. After four surface roughness modifications using standardized polishing protocols, zirconia, polymethylmethacrylate, polyetheretherketone, and titanium alloy specimens were characterized by Ra as well as 17 other parameters using confocal microscopy. Specimens of the tested materials were colonized by C. albicans or S. sanguinis for 2 h; the adhesion was measured via luminescence assays and correlated with the roughness parameters. The adhesion of C. albicans showed a tendency to increase with increasing the surface roughness—the adhesion of S. sanguinis showed no such tendency. Although Sa, that is, the arithmetical mean deviation of surface roughness, and Rdc, that is, the profile section height between two material ratios, showed higher correlations with the microbial adhesion than Ra, these differences were not significant. Within the limitations of this in-vitro study, we conclude that Ra is a sufficient roughness parameter in terms of prediction for initial microbial adhesion to dental biomaterials with polished surfaces.

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Section: Introductionmentioning

confidence: 99%

Predictability of Microbial Adhesion to Dental Materials by Roughness Parameters

et al. 2019

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“…To reach the highest quality of infiltrant resin, two variables were weighted, first, providing maximum penetration of the infiltrant resin into lesions (considered an essential factor) and second, low resin viscosity to fill the lesions pores. Other factors that should be considered are polymerization shrinkage, radiopacity, high mechanical strength, and method of application (Gurdogan et al, 2017). In the current study, the combination of both Duraphat fluoride varnish and Icon ® (group C) provided a more homogenous mineralized surface with complete obliteration of microporosities of the caries lesions on the enamel surfaces.…”

Section: Discussionmentioning

confidence: 72%

Microanalysis and Scanning Electron Microscopic Study of Resin Infiltration and Fluoride Varnish on Early Proximal Caries Lesions

2019

Aust. J. Basic & Appl. Sci.

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Objectives: This study aimed to evaluate the effect of resin infiltration, fluoride varnish, and a combination of fluoride and resin infiltration after the induction of caries-like lesions on extracted human premolars. Material and methods: Sixty extracted human premolars for orthodontic reasons were sectioned in a buccolingual direction into two halves using isomet low speed saw, creating 120 specimens in total. Each specimen was immersed in demineralizing solution for 4 days to induce caries-like lesion then thermocycled in artificial saliva. Only teeth with International Caries Detection and Assessment System code 2 were selected. The specimens were randomly assigned into four groups, Group A (control n=30), Group B (treated with Infiltration Concept [Icon ® ]; n = 30), Group C (treated with Icon ® + Duraphat fluoride; n = 30), Group D (treated with Duraphat fluoride; n = 30). All groups were examined by scanning electron microscopy and energy-dispersive X-ray spectroscopy. The data were analyzed using SPSS and R. Result: In group A (Control), the enamel surface showed irregular pitted rough surface with multiple superficial cavities with different etching patterns. In Group B (Infiltration Concept [Icon ® ]), the enamel surface showed partial blockage of the enamel rods with resin infiltration and irregular surface, whereas in Group C (Icon ® + Duraphat fluoride) the surface was homogeneous with the presence of a hypermineralized layer and complete obliteration of the microporosities. In Group D (Duraphat fluoride), the surfaces were rough and partially blocked with fluorapatite crystals. Elemental analysis revealed significant calcium and phosphorus levels in Group B in comparison with the other groups. Conclusion: A combination of resin infiltration and fluoride varnish were efficacious in the treatment of early proximal lesions by improving the surface texture and achieving significant remineralization of the tooth surface.

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“…A total of 40 sound enamel were then embedded in pre-cut metal cylinders using cold acrylic resin (Imicryl, Konya, Turkey) [27]. The enamel surfaces were flattened and polished using 400-, 600-, 800-, and 1200-grit sandpaper [28]. The initial Vicker's hardness number (VHN) of each enamel surface in a sample was measured on four different points with a micro-indentation hardness tester (Zwick.roell, system 5153.…”

Section: Methodsmentioning

confidence: 99%

Effect of resin infiltrant and fluoride varnish on micro-hardness of de-mineralized enamel submitted to pH challenge

Attia

2018

Egyptian Dental Journal

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The purpose of this study was to evaluate the micro-hardness of artificially induced demineralized enamel after application of resin infiltrant and fluoride varnish and after pH challenge.Material and methods: In the current study; sound bovine incisors were used. A total of 40 sound enamel were then embedded in pre-cut metal cylinders. Two layers of acid-resistant nail varnish were applied to cover most of the enamel surfaces, leaving a window of 4×4 mm for demineralization. Each specimen was immersed in 32 ml of a de-mineralizing solution containing 50 mM acetate buffer solution and 1.28 mM Ca(NO3)2_4H2O, 0.74 mM (NaH2PO4)_2H2O, and 0.03 ppm F at pH 5.0,10 for 24 hours at 37˚C , then microhardness was recorded. The samples then were divided into two groups according to the material used to treat the de-mineralized enamel, each group consisted of 20 samples. Group 1: The samples of de-mineralized enamel were infiltrated with resin infiltration. Then the micro-hardness was recorded for all resin infiltrated samples before pH cycling challenge. The samples were then submitted to a pH cycling model at 37 C over 7 days. The pH cycling consisted of immersing the samples in 35.5 ml of de-mineralizing solution: (2.0 mmol/ L Ca, 2.0 mmol/ L P, 0.075 mol/ L acetate buffer, 2.22 mL/mm 2 of enamel surface) for 6 hours, alternated with immersion in 17.75 mL of re-mineralizing solution: (1.5 mmol/ L Ca, 0.9 mmol/ L P, 0.15 mol/ L KCl, 0.02 mol/ L cacodylate buffer, pH 7.0, 0.25 mL/mm 2 ) for 18 hours for 5 days. Then, specimens were kept for 2 more days in a fresh re-mineralizing solution, completing 7 days of treatment. The samples were washed in de-ionized water for 30 seconds among demineralizing and re-mineralizing cycles. Group 2: Fluoride varnish (Duraphat , Colgate-Palmolive ,NSW, Australia) was applied as a thin layer by a brush and totally dried, then the micro-hardness was recorded. The samples were then subjected to a pH cycling as in group 1. Then after challenge the micro-hardness measurements were performed as formerly described. Results:The difference was highly significant between resin infiltrant and fluoride varnish treated enamel. The comparison among micro-hardness values of initial, de-mineralized enamel, resin-infiltrated enamel and resin infiltrated after pH cycling showed that there was a significant difference. The difference between micro-hardness values was highly significant when comparison was accomplished between initial and de-mineralized enamel, initial and after pH cycling, demineralized enamel and resin infiltrated enamel, de-mineralized enamel and after pH cycling and finally between resin infiltrated enamel and after pH cycling. The difference between microhardness values was not significant regarding initial and resin infiltrated enamel. Conclusion:Within the limitations of this study, it was concluded that the micro-hardness of resin infiltrated enamel was higher than that of de-mineralized enamel treated with fluoride varnish before and after pH cycling.(500) Reham M. Attia E.D.

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Evaluation of Surface Roughness Characteristics Using Atomic Force Microscopy and Inspection of Microhardness Following Resin Infiltration with Icon^®

Cited by 29 publications

References 35 publications

Predictability of Microbial Adhesion to Dental Materials by Roughness Parameters

Predictability of Microbial Adhesion to Dental Materials by Roughness Parameters

Microanalysis and Scanning Electron Microscopic Study of Resin Infiltration and Fluoride Varnish on Early Proximal Caries Lesions

Effect of resin infiltrant and fluoride varnish on micro-hardness of de-mineralized enamel submitted to pH challenge

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Evaluation of Surface Roughness Characteristics Using Atomic Force Microscopy and Inspection of Microhardness Following Resin Infiltration with Icon®

Cited by 29 publications

References 35 publications

Predictability of Microbial Adhesion to Dental Materials by Roughness Parameters

Predictability of Microbial Adhesion to Dental Materials by Roughness Parameters

Microanalysis and Scanning Electron Microscopic Study of Resin Infiltration and Fluoride Varnish on Early Proximal Caries Lesions

Effect of resin infiltrant and fluoride varnish on micro-hardness of de-mineralized enamel submitted to pH challenge

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Evaluation of Surface Roughness Characteristics Using Atomic Force Microscopy and Inspection of Microhardness Following Resin Infiltration with Icon^®