Sage Journals: Discover world-class research

Abstract

Information on the time-dependent release of fluoride from filled resins containing fluoride particles as a function of particle content and solution pH is limited. This study characterized the fluoride ion release from filled resins containing CaF₂ particles as a function of filler content and pH. Urethane dimethacrylate and triethylene glycol dimethacrylate resins were used to make filled-resin disks containing 9.09, 23.08, or 33.33 mass% CaF₂ filler. Fluoride ion release for the 9.09 mass% concentration was independent of pH. Increasing the filler content from 9.09 to 33.33 mass% increased the fluoride release rate in pH 4.0 buffer solution, because of greater surface degradation. Fluoride ion release from disks stored in pH 6.0 buffer solutions occurred mainly by diffusion from disk surfaces, while fluoride release from disks in pH 4.0 buffers was controlled by diffusion from disk surfaces and degeneration of the resin matrix, which exposed more CaF₂ particle surface area.

Get full access to this article

View all access options for this article.

References

Adair SM, Whitford GM, McKnight-Hanes C -1994-. Effect of artificial saliva and calcium on fluoride output of controlled-release devices. Caries Res28:28–34.

Asmussen E, Peutzfeldt A -2002-. Long-term fluoride release from a glass ionomer cement, a compomer, and from experimental resin composites. Acta Odontol Scand60:93–97.

Benson AM, Martin GQ, Son JS, Sternling CV -1980-. Fluid mechanics. In: Kirk-Othmer encyclopedia of chemical technology. Mark HF, Othmer DF, Overberger CG, Seaborg GT, editors. New York: John Wiley & Sons, pp. 582–629.

Buchalla W, Attin T, Schulte-Monting J, Hellwig E -2002-. Fluoride uptake, retention, and remineralization efficacy of a highly concentrated fluoride solution on enamel lesions in situ. J Dent Res81:329–333.

Carey CM, Spencer M, Gove RJ, Eichmiller FC -2003-. Fluoride release from a resin-modified glass-ionomer cement in a continuous-flow system: effect of pH. J Dent Res82:829–832.

Carranza FA Jr, editor -1979-. Glickman’s clinical periodontology. 5th ed. Philadelphia: Saunders, pp. 405–432.

De Moor RJ, Verbeeck RM, De Maeyer EA -1996-. Fluoride release profiles of restorative glass ionomer formulations. Dent Mater12:88–95.

Dijkman GE, Arends J -1992-. Secondary caries in situ around fluoride-releasing light-curing composites: a quantitative model investigation on four materials with a fluoride content between 0 and 26 vol%. Caries Res26:351–357.

Eichmiller FC, Marjenhoff WA -1998-. Fluoride-releasing dental restorative materials. Oper Dent23:218–228.

10.

Ekstrand J, Oliveby A -1999-. Fluoride in the oral environment. Acta Odontol Scand57:330–333.

11.

Hellwig E, Lussi A -2001-. What is optimum fluoride concentration needed for the remineralization process? Caries Res35-Suppl 1-:57–59.

12.

Itota T, Carrick TE, Rusby S, Al-Naimi OT, Yoshiyama M, McCabe JF -2004-. Determination of fluoride ions released from resin-based dental materials using ion-selective electrode and ion chromatograph. J Dent32:117–122.

13.

Lee H, Ocumpaugh DE, Swartz ML -1972-. Sealing of developmental pits and fissures: II. Fluoride release from flexible fissure sealers. J Dent Res51:183–190.

14.

Mirth DB -1987-. Controlled-release therapeutic system: technology applicable to the treatment of oral disease. Adv Dent Res1:109–118.

15.

Morphis TL, Toumba KJ, Lygidakis NA -2000-. Fluoride pit and fissure sealants: a review. Int J Paediatr Dent10:90–98.

16.

Oliveby A, Ekstrand J, Lagerlöf F -1987-. Effect of salivary flow rate on salivary fluoride clearance after use of a fluoride-containing chewing gum. Caries Res21:393–401.

17.

Rawls HR -1991-. Preventive dental materials: sustained delivery of fluoride and other therapeutic agents. Adv Dent Res5:50–55.

18.

Reich E -2001-. How to measure the effects of fluoride treatments in clinical trials? The role of caries prevalence and caries assessment. Caries Res35-Suppl 1-:34–39; erratum, Caries Res 35:396.

19.

Shen C, Autio-Gold J -2002-. Assessing fluoride concentration uniformity and fluoride release from three varnishes. J Am Dent Assoc133:176–182.

20.

Taylor DF, Kalachandra S, Sankarapandian M, McGrath JE -1998-. Relationship between filler and matrix resin characteristics and the properties of uncured composite pastes. Biomaterials19:197–204.

21.

ten Cate JM -1990-. In vitro studies on the effects of fluoride on de- and remineralization. J Dent Res69-Spec Iss-:614–619, discussion, 634–636.

22.

ten Cate JM -1997-. Review on fluoride, with special emphasis on calcium fluoride mechanisms in caries prevention. Eur J Oral Sci105:461–465.

23.

van Loveren C -2001-. Antimicrobial activity of fluoride and its in vivo importance: identification of research questions. Caries Res35-Suppl 1-:65–70.

24.

Wei L -1998-. Investigation of a self-modulated fluoride-releasing adhesive for dental applications -PhD dissertation-. Gainesville, FL: University of Florida.

Effect of CaF 2 Content on Rate of Fluoride Release from Filled Resins

Abstract

Get full access to this article

References