Fluoride has remained the most important ingredient in the prevention of tooth decay for many years. Therefore, fluoride prophylaxis should be highly individualized to provide patients with maximum benefits while minimizing the risk of toxic effects. This study aims to compare the degree of fluoride ion release from two commercially available dental fluoride gels (Fluormex and Fluor Protector Gel) in five different physiological solutions as well as their effect on pH. The concentration of fluoride ions and pH of tap water, distilled water, demineralized water, NaCl, and artificial saliva were evaluated before and after 48 h after dissolving and incubating the same amounts of gels. The concentration of fluoride ions was higher in solutions containing Fluormex than Fluor Pro-tector Gel ( < 0.05), with the highest concentration in demineralized water (16,917 ppm). It was accompanied by a decrease in pH below the critical value of 5.5 in all solutions except tap water. Not only the composition of the gel but also the chemical composition of the environment affects the release of fluoride ions. No relationship was found between the change in pH and the concentration of fluoride ions.
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http://dx.doi.org/10.3390/gels11020135 | DOI Listing |
J Dent Res
March 2025
Department of Preventive Dentistry, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, China.
Dental caries, as one of the prevalent oral infectious diseases worldwide, constitutes a considerable disease burden. Fluoride has been widely used to prevent dental caries for decades. However, fluoride alone may not always be sufficient.
View Article and Find Full Text PDFPolymers (Basel)
February 2025
Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples Federico II, Via Sergio Pansini 5, 80131 Naples, Italy.
Bioactive restorative materials are crucial for promoting remineralization and protecting dental tissues through ion release. This study examines how pH and temperature influence the short- and long-term ion (F, Ca, Sr, OH, Si, and PO) release from seven commercial materials: , , , , , , and . Disks were prepared according to the manufacturers' instructions; immersed in buffer solutions at pH 4.
View Article and Find Full Text PDFPediatr Dent
January 2025
Department of Dental Hygiene and Dental Assisting, College of Dentistry, New York University, New York, NY, USA.
The purpose of this in vitro study was to investigate the release of silver and fluoride ions from caries lesions treated with silver diammine fluoride (SDF), with and without using a light-emitting diode (LED) curing light, the use of which increases silver penetration into the lesion. Eighteen extracted primary molars with natural caries lesions were divided into four groups: (1) one-minute SDF (n equals six); (2) 40-second SDF + 20-second LED (n equals six); (3) untreated control (n equals three); and (4) 20-second LED control (n equals three). Samples were immersed in artificial saliva for 0.
View Article and Find Full Text PDFWater Res
March 2025
College of Environmental Science & Engineering, North China Electric Power University, Beijing, 102206, PR China. Electronic address:
Electrochemical uranium extraction from real nuclear wastewater with a high concentration of fluoride ions (F-) represents a promising strategy for the efficient treatment of radioactive wastewater and the recovery of the valuable uranium resource. However, the current progress suffers from the interference of extremely high concentration of F- and undesired purity of the final uranium product. Herein, we constructed the neighboring ensemble Lewis acid-base pair sites (ensemble Lewis sites) in bismuth oxides as the extraction material, which was integrated into a designed tandem electrochemical device for efficient recovery of high-purity uranium from real nuclear wastewater.
View Article and Find Full Text PDFSpec Care Dentist
March 2025
Department of Preventive and Community Dentistry, Faculty of Medicine, University of Murcia, Murcia, Spain.
Purpose: Gestation is a time in women's lives when many physiological changes occur that have systemic and oral repercussions, especially in the periodontium. The aim of the study is to determine the oral health status, plaque index, oral health related quality of life, and concentration of fluoride in saliva, after the application of fluorinated varnishes, of pregnant women participating in a preventive oral health program.
Material And Methods: A randomized clinical trial was carried out on pregnant patients involved in an oral health program.
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