In vitro Evaluation of Topical Fluoride ph and their Effect on Surface Hardness of Composite Resin-based Restorative Materials

Mujeeb, Abdul; Mansuri, Samir; Hussain, Syed M.; Ramaswamy, Kausar

doi:10.5005/jp-journals-10024-1513

Cited by 5 publications

(5 citation statements)

References 9 publications

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“…Both fluoride-treated nano-filled and bulk-fill resin composites showed VHNs comparable to those of their controls (aged with no surface treatment), while both flowable and micro-hybrid composites showed lower hardness values than their controls. Many studies [ 45 , 46 , 47 ] reported controversial effects of the acidulated phosphate fluoride (APF) preparations on composites’ surface hardness and some of their authors [ 47 ] related that controversy mainly to the differences in composites’ filler contents (loading, size and type) and to the composite-APF contact times. The APF gel was found to damage the resin matrix, the inorganic fillers and the resin-filler interfaces, leading to separation of the filler particles [ 48 ].…”

Section: Discussionmentioning

confidence: 99%

“…The micro-hybrid type, at the same time, seemed more resistant to the erosive effect of the APF gel, as such surfaces showed lower roughness values than the other types of tested resin composites. Since the restorative composite degradation appears to depend on the filler size distribution through the number of matrix–filler interfaces, this finding could be referred to the material’s higher volumetric filler loading with different size distributions that allow minimal resin content to be exposed to the erosive acidic environment ( Table 1 ) [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , ...…”

Section: Discussionmentioning

confidence: 99%

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Influences of Successive Exposure to Bleaching and Fluoride Preparations on the Surface Hardness and Roughness of the Aged Resin Composite Restoratives

et al. 2020

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Background and Objectives: Surfaces of composite restorations are adversely affected upon bleaching and topical fluoride application. Such a procedure is normally carried out in the presence of restorations already serving in a different oral environment, although previous in vitro studies only considered the freshly-prepared composite specimens for assessment. The current study accordingly aimed to evaluate both the surface hardness and roughness of aged composite restoratives following their successive exposure to bleaching and topical fluoride preparations. Materials and Methods: Disc specimens were prepared from micro-hybrid, nano-filled, flowable and bulk-fill resin composites (groups 1–4, n = 60 each). All specimens were subjected to artificial aging before their intermittent exposure to surface treatment with: none (control), bleach or topical fluoride (subgroups 1–3, n = 20). All surface treatments were interrupted with two periods of 5000 thermal cycles. Specimens’ surfaces were then tested for both surface hardness (Vickers hardness number (VHN), n = 10) and roughness (Ra, n = 10). The collected VHNs and Ras were statistically analyzed using two-way ANOVA and Tukey’s comparisons at α = 0.05 to confirm the significance of differences between subgroups. Results: None of the tested composites showed differences in surface hardness and roughness between the bleached and the non-treated specimens (p > 0.05), but the bleached flowable composite specimens only were rougher than their control (p < 0.000126). In comparison to the control, fluoride treatment not only reduced the surface hardness of both micro-hybrid (p = 0.000129) and flowable (p = 0.0029) composites, but also increased the surface roughness of all tested composites (p < 0.05). Conclusion: Aged composite restoratives provide minimal surface alterations on successive bleaching and fluoride applications. Flowable resin composite is the most affected by such procedures. Although bleaching seems safe for other types of composites, the successive fluoride application could deteriorate the aged surfaces of the tested resin composites.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Influences of Successive Exposure to Bleaching and Fluoride Preparations on the Surface Hardness and Roughness of the Aged Resin Composite Restoratives

et al. 2020

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“…Between composite and fluorides, three major interactions can be noticed, that is, with organic matrix (BisGMA), filler matrix coupling agent and with reinforcing fillers. 2 …”

Section: Discussionmentioning

confidence: 99%

“… 1 It is a chronic, multifactorial, transmissible infectious dental disease that has an adverse effect on a great deal of the world's population, causing both pain and discomfort. 2 In the primary dentition, glass ionomer cement and composites are the most commonly used tooth-colored restorative materials. 3 …”

Section: Introductionmentioning

confidence: 99%

Effect of Fluoride-based Varnishes with Added Calcium and Phosphate on Microhardness of Esthetic Restorative Materials: An In Vitro Study

Bhat¹,

Hegde²,

Bhat³

et al. 2022

International Journal of Clinical Pediatric Dentistry

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A bstract Background and objectives Fluoride varnishes are being used to prevent caries in children. The high concentration of fluoride in varnishes apart from caries prevention may cause changes in surface properties of esthetic restorations. The study aims to evaluate and compare the effect of four commercially available fluoride varnishes with added calcium and phosphate on microhardness of three esthetic materials namely conventional GIC (Fuji II), high viscosity GIC (Fuji IX), and nanocomposite (Filtek Z350). Materials and methods A total of 28 pellets were made of each material and stored in distilled water at 37 °C for 48 hours. The microhardness of the pellets was tested which served as a baseline. These were then randomly divided into four subgroups. In one subgroup Profluorid varnish was applied, second subgroup MI varnish was applied, third subgroup Embrace varnish was applied, and in the fourth subgroup Enamel Pro varnish was applied as per protocol. Thereafter, all the pellets were subjected to microhardness testing (load = 100 g for 15 seconds). Results The fluoride varnishes increased the microhardness of conventional GIC (Fuji II) whereas in case of high viscosity GIC (Fuji IX) the application of varnishes reduced the microhardness. In case of nanocomposite restorative material (Filtek Z350) only Profluorid varnish increased its microhardness. Conclusion Fluoride varnish and calcium-phosphate containing fluoride varnish effect on the microhardness of restorative material is material dependent. So, the choice of fluoride varnish with or without proprietary additives depends on the nature and composition of the restorative material. How to cite this article Shetty RS, Bhat SS, HK Sundeep, et al. Effect of Fluoride-based Varnishes with Added Calcium and Phosphate on Microhardness of Esthetic Restorative Materials: An In Vitro Study. Int J Clin Pediatr Dent 2022;15(2):187-193.

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“…The pH and the F − of the prophylactic remineralizing agents influence the corrosion of the various dental materials 24,31,32) , but the HF concentration should be used to give more accurate prediction for the release of ions from the NiTi alloys.…”

Section: Discussionmentioning

confidence: 99%

Effect of pH, fluoride and hydrofluoric acid concentration on ion release from NiTi wires with various coatings

Katić

Ćurković

Bošnjak³

et al. 2017

Dent. Mater. J.

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Aim was to determine effect of pH, fluoride (F − ) and hydrofluoric acid concentration (HF) on dynamic of nickel (Ni 2+ ) and titanium (Ti 4+ ) ions release. Nickel-titanium wires with untreated surface (NiTi), rhodium (RhNiTi) and nitride (NNiTi) coating were immersed once a week for five min in remineralizing agents, followed by immersion to artificial saliva. Ion release was recorded after 3, 7, 14, 21 and 28 days. Pearson correlations and linear regression were used for statistical analysis. Release of Ni 2+ from NiTi and NNiTi wires correlated highly linearly positively with HF (r=0.948 and 0.940, respectively); for RhNiTi the correlation was lower and negative (r=−0.605; p<0.05). The prediction of Ti 4+ release was significant for NiTi (r=0.797) and NNiTi (r=0.788; p<0.05) wire. Association with F − was lower; for pH it was not significant. HF predicts the release of ions from the NiTi wires better than the pH and F − of the prophylactic agents.

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In vitro Evaluation of Topical Fluoride ph and their Effect on Surface Hardness of Composite Resin-based Restorative Materials

Cited by 5 publications

References 9 publications

Influences of Successive Exposure to Bleaching and Fluoride Preparations on the Surface Hardness and Roughness of the Aged Resin Composite Restoratives

Influences of Successive Exposure to Bleaching and Fluoride Preparations on the Surface Hardness and Roughness of the Aged Resin Composite Restoratives

Effect of Fluoride-based Varnishes with Added Calcium and Phosphate on Microhardness of Esthetic Restorative Materials: An In Vitro Study

Effect of pH, fluoride and hydrofluoric acid concentration on ion release from NiTi wires with various coatings

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