title: Fluoride releasing and uptake capacities of esthetic restorations.
abstract: OBJECTIVE
  The purpose of this study was to evaluate and compare in vitro the fuoride release and uptake from 5 different esthetic restorative materials.
  
  
  METHODS
  Materials tested were conventional GIC - Fuji 7, GC (group1), resin modifed GIC - Vitremer, 3M ESPE (group 2), polyacid modifed composite - Dyract, Dentsply (group 3), fuoride releasing composite - Tetric ceram, Ivoclar Vivadent (group 4), Giomer-Beautifl, Shofu (group 5). Fluoride release was estimated at 6th, 24th, 48th hour and weekly interval for 5 weeks. For fuoride recharge, each specimen was exposed to 2 ml of 1.23% APF gel for 4 minutes and fuoride release measured at 1st, 2nd, 3rd day and 7th day. The fuoride release and recharge was measured using fuoride ion specifc electrode.
  
  
  RESULTS
  ANOVA and Tukey HSD test were used for statistical analysis. During tested period all materials showed statistically different capability to release and uptake fuoride. Groups 1 and 2 results were comparable in fuoride release. Similarly groups 3 and 5. Groups 1 and 2 vs 3, 4, 5 were statistically very highly signifcant. Only conventional GIC showed initial 'burst effect'.
  
  
  CONCLUSIONS
  Materials tested showed potential for fuoride release and recharge. Different esthetic materials had variable fuoride release hence selection of materials should be guided by specifc clinical situations.
authors.affiliation: Reader, Department of Conservative Dentistry and Endodontics New Horizon Dental College and Research Institute, Sakri, Bilaspur Chhattisgarh, India, e-mail: drgururajm@gmail.com.
authors.forename: M
authors.initials: M
authors.lastname: Gururaj
authors.affiliation: Professor and Head, Department of Conservative Dentistry and Endodontics, Dr DY Patil Dental College and Hospital, Dr DY Patil Vidyapeet, Pimpri, Pune, Maharashtra, India.
authors.forename: Rajesh
authors.initials: R
authors.lastname: Shetty
authors.affiliation: Principal, Department of Conservative Dentistry and Endodontics KVG Dental College and Hospital, Sullia. Dakshin Kannada Karnataka, India.
authors.forename: Moksha
authors.initials: M
authors.lastname: Nayak
authors.affiliation: Reader, Department of Prosthodontics and Crown and Bridge, Dr DY Patil Dental College and Hospital, Dr DY Patil Vidyapeet, Pimpri Pune Maharashtra, India.
authors.forename: Shwetha
authors.initials: S
authors.lastname: Shetty
authors.affiliation: Reader, Department of Conservative Dentistry and Endodontics, KVG Dental College and Hospital, Sullia, Dakshin Kannada, Karnataka India.
authors.forename: Cn Vijay
authors.initials: CV
authors.lastname: Kumar
mesh_terms: D000149:Acidulated Phosphate Fluoride / Q000737:chemistry; D002327:Cariostatic Agents / Q000737:chemistry*; D020770:Compomers / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry; D003764:Dental Materials / Q000737:chemistry*; D004058:Diffusion; D005459:Fluorides / Q000737:chemistry*; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D017736:Ion-Selective Electrodes; D008422:Materials Testing; D019279:Resin Cements / Q000737:chemistry; D012464:Saliva, Artificial / Q000737:chemistry; D013997:Time Factors
chemical_list: C508973:Beautifil FL-Bond; D002327:Cariostatic Agents; D020770:Compomers; D003188:Composite Resins; D003764:Dental Materials; C088486:Dyract; C493186:Fuji VII; D005899:Glass Ionomer Cements; D019279:Resin Cements; D012464:Saliva, Artificial; C121818:Tetric ceram; C084550:Vitremer; D000149:Acidulated Phosphate Fluoride; D005459:Fluorides