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Biomaterial, Host, and Microbial Interactions
Published in Mary Anne S. Melo, Designing Bioactive Polymeric Materials for Restorative Dentistry, 2020
A modified model with a different group of bacterial species (S. mutans, S. sobrinus, and S. gordonii) was developed to evaluate biofilm-induced secondary caries (Hayati et al. 2011). Artificial biofilms were formed on specimens with resin composite restorations in a continuous flow reactor for 20 h, and then incubated for 7 or 30 days (Hayati et al. 2011). Using defined multi-species biofilms, this study established an artificial secondary caries model for in vitro studies, as well as verified the significance of using an adhesive bonding system (Hayati et al. 2011). Another AMM, using a five-species (S. mutans, S. sobrinus, Lactobacillus acidophilus, L. rhamnosus, and A. naeslundii) system, looked at the mechanism of action of silver diamine fluoride (SDF) on the biofilm (Mei et al. 2013). SDF was found to inhibit the formation of the biofilm and reduce demineralization (Mei et al. 2013). This study also determined the arrangement of bacteria within the biofilm and found that Lactobacilli and Streptococci mostly inhabited the upper and lower layers of the biofilm, respectively (Mei et al. 2013).
Ultrasonic measurement of dentin remineralization effects of dentifrices and silver diamine fluoride
Published in Acta Odontologica Scandinavica, 2021
Kengo Wakamatsu, Hiroyasu Kurokawa, Taketo Okuwaki, Toshiki Takamizawa, Akimasa Tsujimoto, Koji Shiratsuchi, Ryo Ishii, Masashi Miyazaki
Silver diamine fluoride (SDF) is an alkaline topical fluoride solution containing two reasonably well-known ingredients: silver and fluoride (Ag(NH3)2F). SDF is effective not only for preventing and arresting dental caries but also for treating dentin hypersensitivity [11]. In contrast with silver nitrate (AgNO3), which was often used to treat dentin hypersensitivity, SDF does not cause inflammation of pulp tissues [12]. Silver is a direct antimicrobial agent because it reacts with the thiol groups of amino acids and nucleic acids, disrupting the metabolic and reproductive pathways of the bacteria that cause cell death. Along with the emergence of SDF as a caries-arresting agent, there is growing interest in its use in the practicing community [13].
Silver release from dentine treated with combinations of silver diamine fluoride, potassium iodide and etching
Published in Biomaterial Investigations in Dentistry, 2023
Frode Staxrud, Rune Becher, Morten Syverud, Naomi Azulay, Håkon Valen
Today Silver Diamine Fluoride (SDF) is used for the purpose of caries arrest [4,5] and treatment of dentin hypersensitivity [6]. Fluoride-metal compounds like SDF has shown cariostatic effect when used on active carious lesions [3,7–9]. The use of SDF has become increasingly popular in the endeavor to help children and frail elderly conquer their caries problems [5,10]. SDF is an inexpensive and easy-to-use topical medicament used extensively in many countries. However, discoloration of dentine is an aesthetic challenge when using SDF, but this can largely or at least to some degree be avoided by the use of potassium iodide (KI) [11,12].