Sodium Fluoride and Phosphoric Acid Gel

Introduction: Microleakage has been reported to cause dentin hypersensitivity because of the passage of bacteria and their products through the restoration-tooth interface and is one of the main reasons for replacement of restorations. CO2 laser can be used for treatment of dentin hypersensitivity. Thus, this study aimed to evaluate in vitro the microleakage in composite restorations following surface pretreatment with acid etching and CO2 laser. Methods: Twelve human caries-free primary molars were selected. Class II cavities were prepared on occlusal mesial and occlusal distal surfaces. Specimens were randomly divided into four groups (n=6): Group 1 (G1) – 37% phosphoric acid gel etching + Beautiful-Bulk Restorative – Giomer (Shofu Inc); Group 2 (G2) – 37% phosphoric acid gel etching + SDR Bulk-Fill Flow (Dentsply); Group 3 (G3) – CO2 laser irradiation + Beautiful-Bulk Restorative – Giomer (Shofu Inc); Group 4 (G4) – CO2 laser irradiation + SDR Bulk-Fill Flow (Dentsply). Surfaces were restored with bonding agent (Natural Bond DE, DFL). Specimens were cut longitudinally and immersed in 0.5% methylene blue solution for 4 hours. Microleakage scores were assessed under a magnifying glass at x3,5 and qualitatively analyzed by scanning electron microscope (SEM). Data were analyzed using nonparametric Wilcoxon test (P < 0.05). Results: Scores prevailed between 0 and 2, however, no statistically significant difference was found among the groups (P= 0.05). Conclusion: It could be concluded that all composite resins bulk fill did not show significant difference among them regarding microleakage using either CO2 laser or 37% phosphoric acid etching.

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Microleakage under Metallic and Ceramic Brackets Bonded with Orthodontic Self-Etching Primer Systems

The Angle Orthodontist ◽

10.2319/100507-481.1 ◽

2008 ◽

Vol 78 (6) ◽

pp. 1089-1094 ◽

Cited By ~ 13

Author(s):

Tancan Uysal ◽

Mustafa Ulker ◽

Sabri Ilhan Ramoglu ◽

Huseyin Ertas

Keyword(s):

Stainless Steel ◽

Phosphoric Acid ◽

White Spot Lesions ◽

Group 4 ◽

Ceramic Brackets ◽

Group 3 ◽

Group 2 ◽

Ceramic Bracket ◽

Acid Gel

Abstract Objective: To compare the in vitro microleakage of orthodontic brackets (metal and ceramic) between enamel-adhesive and adhesive-bracket interfaces at the occlusal and gingival sides produced by self-etching primer system with that of conventional acid etching and bonding. Materials and Method: Sixty freshly extracted human mandibular premolar teeth were used in this study. The teeth were separated into four groups of 15 teeth each and received the following treatments: Group 1, 37% phosphoric acid gel + Transbond XT liquid primer + stainless steel bracket; Group 2, Transbond Plus Self-Etching Primer (TSEP) + stainless steel bracket; Group 3, 37% phosphoric acid gel + Transbond XT liquid primer + ceramic bracket; Group 4, TSEP + ceramic bracket. After curing, specimens were further sealed with nail varnish, stained with 0.5% basic fuchsine for 24 hours, sectioned and examined under a stereomicroscope, and scored for microleakage for the enamel-adhesive and bracket-adhesive interfaces from both occlusal and gingival margins. Statistical analyses were performed using Kruskal-Wallis and Mann-Whitney U tests. Results: The gingival sides in all groups exhibited higher microleakage scores compared with those observed in occlusal sides for both adhesive interfaces. Enamel-adhesive interfaces exhibited more microleakage than did the adhesive-bracket interfaces. Brackets bonded with self-etching primer system showed significantly higher microleakage at the enamel-adhesive interface of the gingival side. Conclusions: TSEP causes more microleakage between enamel-adhesive interfaces, which may lead to lower bond strength and/or white-spot lesions.

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X-ray diffraction and fluoride analysis of enamel powder treated with concentrated phosphoric acid containing sodium fluoride

Journal of Oral Rehabilitation ◽

10.1111/j.1365-2842.1980.tb00466.x ◽

1980 ◽

Vol 7 (6) ◽

pp. 471-474 ◽

Cited By ~ 4

Author(s):

I. GEDALIA ◽

H. BAHAREV ◽

D. KOCHAVI

Keyword(s):

Phosphoric Acid ◽

Sodium Fluoride ◽

X Ray Diffraction ◽

X Ray

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Formation of monofluorophosphate from fluoride in phosphoric acid – water and phosphoric acid – sulfuric acid – water mixtures

Canadian Journal of Chemistry ◽

10.1139/v07-027 ◽

2007 ◽

Vol 85 (5) ◽

pp. 346-351 ◽

Cited By ~ 3

Author(s):

Kenneth E Newman ◽

Raymond E Ortlieb ◽

Nicole Pawlik ◽

Jason Reedyk

Keyword(s):

Sulfuric Acid ◽

Phosphoric Acid ◽

Reaction Kinetics ◽

Water Activity ◽

Activity Coefficients ◽

Sodium Fluoride ◽

Rate Constants ◽

Strong Acid ◽

Ternary Mixtures ◽

Acid Water

When dissolved in concentrated phosphoric acid, sodium fluoride reacts rapidly to form monofluorophosphate. In less concentrated acid, the reaction does not proceed to completion, and the reaction kinetics become very much slower. The equilibrium and rate constants for the reaction have been determined. In ternary mixtures of phosphoric acid, sulfuric acid, and water, the formation of monofluorophosphate is considerably enhanced, and the kinetics are rapid. The results are interpreted in terms of the very low water activity coefficients in strong-acid solutions.Key words: monofluorophosphate, monofluorophosphoric acid, 19F NMR, 31P NMR, phosphoric acid, sulufric acid, equilibria, kinetics.

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Acid Débridement of Burns with Phosphoric-Acid gel

Plastic & Reconstructive Surgery ◽

10.1097/00006534-195108000-00016 ◽

1951 ◽

Vol 8 (2) ◽

pp. 168 ◽

Cited By ~ 1

Author(s):

Robert J. Schweitzer ◽

Jacob T. Bradsher

Keyword(s):

Phosphoric Acid ◽

Acid Gel

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Marginal filling and adhesive resistance of bulk fill resin applying 18% edta gel compared with 37% phosphoric acid gel in vitro dental conditioning.

Journal Of Oral Research ◽

10.17126/joralres.2019.034 ◽

2020 ◽

Vol 8 (3) ◽

pp. 228-235

Author(s):

César Cayo ◽

◽

Lorena Llancari ◽

Román Mendoza ◽

Luis Cervantes ◽

...

Keyword(s):

Phosphoric Acid ◽

Acid Gel

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Water-in-Acid Gel Polymer Electrolyte Realized through a Phosphoric Acid-Enriched Polyelectrolyte Matrix toward Solid-State Supercapacitors

ACS Sustainable Chemistry & Engineering ◽

10.1021/acssuschemeng.8b01175 ◽

2018 ◽

Vol 6 (10) ◽

pp. 12630-12640 ◽

Cited By ~ 8

Author(s):

Vidyanand Vijayakumar ◽

Meena Ghosh ◽

Arun Torris A. T. ◽

Nikhil Chandran M. K. ◽

Sanoop B. Nair ◽

...

Keyword(s):

Solid State ◽

Phosphoric Acid ◽

Polymer Electrolyte ◽

Gel Polymer Electrolyte ◽

Acid Gel

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Influence of Matrix Metalloproteinase Synthetic Inhibitors on Dentin Microtensile Bond Strength of Resin Cements

Operative Dentistry ◽

10.2341/11-256-l ◽

2012 ◽

Vol 37 (4) ◽

pp. 386-396 ◽

Cited By ~ 14

Author(s):

THS Stape ◽

MS Menezes ◽

BCF Barreto ◽

FHB Aguiar ◽

LR Martins ◽

...

Keyword(s):

Acetic Acid ◽

Phosphoric Acid ◽

Bond Strength ◽

Statistical Difference ◽

Strength Testing ◽

Microtensile Bond Strength ◽

Resin Cements ◽

Tukey Test ◽

Human Dentin ◽

Acid Gel

SUMMARY This study evaluated the effect of dentin pretreatment with 2% chlorhexidine (CHX) or 24% ethylenediamine tetra-acetic acid gel (EDTA) on the dentin microtensile bond strength (μTBS) of resin cements. Composite blocks were luted to superficial noncarious human dentin (n=10) using two resin cements (RelyX ARC [ARC] and RelyX U100 [U100]) and three dentin pretreatments (without pretreatment–control, CHX, and EDTA). CHX was applied for 60 seconds on the acid-etched dentin in the ARC/CHX group, and for the same time on smear layer-covered dentin in the U100/CHX group. EDTA was applied for 45 seconds on smear-covered dentin in the U100/EDTA group, and it replaced phosphoric acid conditioning in the ARC/EDTA group for 60 seconds. After storage in water for 24 hours, specimens were prepared for microtensile bond strength testing. The results were submitted to two-way analysis of variance (ANOVA) followed by Tukey test. ARC produced significantly higher μTBS (p<0.05) compared to the U100, except when EDTA was used. For ARC, no pretreatment and CHX produced higher μTBS than EDTA. For U100, EDTA produced higher μTBS; no statistical difference occurred between CHX pretreatment and when no pretreatment was performed. While CHX did not affect immediate dentin bond strength of both cements, EDTA improved bond strength of U100, but it reduced dentin bond strength of ARC.

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