Influence of Fluoride and pH on in vitro Remineralization of Bovine Enamel

Lammers, P.C.; Borggreven, J.M.P.M.; Driessens, F. C. M.

doi:10.1159/000261418

Cited by 20 publications

(17 citation statements)

References 15 publications

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“…Significant protection occurs at 2 ppm or more. Recently, ten Cate (1990) and Lammers et al (1992) confirmed previous reports that low concentrations of F present during enamel demineralization promoted remineralization and significantly limited mineral loss. Pearce et al (1992) also tested the Fplus-sucrose mix on plaque-induced demineralization using intra-oral testing procedures with the 0, 1,2, and 5 ppm F in 10% sucrose.…”

Section: Effect Of F Concentration On Enamel Hardnesssupporting

confidence: 60%

Effects of Fluoride-Supplemented Sucrose on Experimental Dental Caries and Dental Plaque PH

et al. 1995

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Sucrose, 5% and 10% (w/v), supplemented with between 0 and 5 ppm fluoride (F), was tested for its influence in vitro on plaque-induced experimental in vitro enamel caries and plaque pH. Plaque growth on bovine enamel was initiated from saliva inocula and sustained in a multiple plaque growth system for up to 31 days by means of a basal medium with periodic applications of sucrose or sucrose supplemented with F. Change in enamel mineralization was assessed, before and after plaque growth, by microhardness testing and microradiography; pH was monitored with microelectrodes. It was found that enamel demineralization was inversely related to the F concentration in the range 2 to 5 ppm, for both 5% and 10% sucrose. Plaque pH responses were unaffected by the F supplements.

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Section: Effect Of F Concentration On Enamel Hardnesssupporting

confidence: 60%

Effects of Fluoride-Supplemented Sucrose on Experimental Dental Caries and Dental Plaque PH

et al. 1995

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“…This finding indicates that a major part of the remineralization resulted from migration and redeposition of ions from the ACP and not from the immersion solution. This remineralization was comparable with or greater than the in vitro remineralization of subsurface bovine enamel lesions treated with remineralizing solutions containing different levels of fluoride [A(AZ) ± standard deviation = 46% ± 14% and 71% + 18%, respectively, for 0.3 pg/g and 1 pg/g fluoride containing RS at pH 6.8 (Lammers et al, 1992a), and from 21°% + 7%o to 33% + 7%0 for fluoride concentrations between 0.03 pg/g and 1 }ag/g and pH 5.5 (Lammers et al, 1992b)]. In contrast, net remineralization obtained with ACPcomposites under the pH-cycling dynamic regimen was generally lower than the remineralization achieved with different fluoride treatments under similar conditions [A(AZ) = 721% + 15%, Damato et al, 1988; A(AZ) = 82% ± 6%, White and Featherstone, 1987; A(AZ) = 87% ± 9%, Featherstone et al, 1988; A(AZ) = 46% ± 23% and A(AZ) -94"/o + 43"/, Chow et al, 1992].…”

Section: Discussionmentioning

confidence: 99%

Quantitative Assessment of the Efficacy of Amorphous Calcium Phosphate/Methacrylate Composites in Remineralizing Caries-like Lesions Artificially Produced in Bovine Enamel

et al. 1996

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Recent studies show that methacrylate-based composites with amorphous calcium phosphate (ACP) as a filler can release supersaturating levels of calcium and phosphate ions in proportions favorable for apatite formation. These findings suggest that such composites could be effectively used as coatings for remineralizing teeth damaged by tooth decay. To examine this hypothesis, we tested composites in vitro for their efficacy to remineralize artificially formed caries-like lesions in extracted bovine incisors. Single 120-microns-thick sagittal tooth sections were placed in holders that exposed only the carious enamel surface. The exposed surfaces were coated with a 1-mm- to 1.5-mm-thick layer of the composite containing, by mass, 40% apatite, silica, or P2O7(-4)-stabilized ACP and 60% photoactivated resin comprised of Bis-GMA, TEGDMA, HEMA, and ZrM. The photocured composite-coated sections were immersed either in a remineralizing solution for 4 weeks at 37 degrees C (static model) or cyclically immersed in demineralizing (0.5 h) and remineralizing solutions (11.5 h) for 2 weeks (dynamic model). Quantitative digital image analysis of matched 102 microns x 220 microns areas from contact microradiographs taken of the sections before and after immersion showed that lesions coated with ACP-filled composites fractionally recovered 71% +/- 33% of their lost mineral compared with 14% +/- 13% for apatite controls in the static model and 38% +/- 16% compared with -6% +/- 24% in the dynamic model. The results suggest that sealants based on ACP-filled methacrylate composites have the potential to remineralize carious enamel lesions.

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“…After 6 h, the pH levels were decreased in the different groups. However, CPB showed the highest pH values, which may have been due to the presence of fluoride in the formulation (Moszner et al 2005;Van Landuyt et al 2007), which has been shown to influence pH (Lammers et al 1992). However, after 24 h, CPB displayed lower pH values.…”

Section: Anti-biofouling Testing: Changes In the Ph Of The Mediamentioning

confidence: 96%

Self-etching dental adhesive containing a natural essential oil: anti-biofouling performance and mechanical properties

Peralta¹,

Carvalho²,

Sande³

et al. 2013

Biofouling

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This study assessed the anti-biofouling performance of an experimental adhesive system containing a naturally occurring essential vegetable oil and examined the following physical and mechanical properties: water sorption (WS) and solubility (SL), microtensile bond strength to dentin (μTBS), and degree of conversion. The following six groups were tested: a self-etching experimental adhesive containing refined essential oil from the seeds of the Butia capitata tree (EA O ); an oil-free version of the experimental adhesive (EA NO ); one group without adhesive as the control (C); and the three following commercial self-etching adhesives: Clearfil Protect Bond (CPB), Clearfil SE Bond, and Adper SE Plus. The antibacterial effect was estimated by microbiological culture on selective/non-selective media, and the results expressed as colony-forming units per unit weight of dry biofilm (CFU mg À1). The data were submitted to ANOVA and Tukey's post hoc test (α = 0.05). After 24 h, pH changes were similar in the storage medium of all tested adhesive systems. EA O showed similar levels of antimicrobial activity in a model biofilm microcosm as the commercial self-etching adhesive CPB. Both were effective against total microorganisms, aciduric bacteria, lactobacilli, and Streptococcus mutans. WS and SL were not affected by the presence of the essential oil; the values of EA O were similar to or less than those of commercial equivalents. The incorporation of an essential oil into an experimental adhesive did not influence its monomer conversion result. Immediate μTBS values of EA O and EA NO were similar and were greater than those of commercial equivalents. After storage for 6 months, the μTBS of the EA O decreased significantly and became similar to the values of commercial equivalents, while the strength of the EA NO was not affected.

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Influence of Fluoride and pH on in vitro Remineralization of Bovine Enamel

Cited by 20 publications

References 15 publications

Effects of Fluoride-Supplemented Sucrose on Experimental Dental Caries and Dental Plaque PH

Effects of Fluoride-Supplemented Sucrose on Experimental Dental Caries and Dental Plaque PH

Quantitative Assessment of the Efficacy of Amorphous Calcium Phosphate/Methacrylate Composites in Remineralizing Caries-like Lesions Artificially Produced in Bovine Enamel

Self-etching dental adhesive containing a natural essential oil: anti-biofouling performance and mechanical properties

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