A comparative study of fluoride uptake from dentin bonding agents and glass-ionomer cements in permanent and primary tooth enamel.
OBJECTIVE
Many fluoride-releasing dental materials are being sold on the basis of their cariostatic properties. However, the amount of fluoride release of these materials is still uncertain. The aim of this study was to determine the amount of fluoride uptake in primary and permanent tooth enamel from 1 conventional glass-ionomer cement (Fuji II), 1 resin-modified glass-ionomer cement (Fuji II LC), and 2 fluoride-releasing dentin bonding agents (Liner Bond 2 and Optibond) in vitro.


METHODS
One hundred sixty caries-free primary and permanent molar teeth were assigned to the study. Materials were applied according to the manufacturer's instructions to standard windows created on the enamel surfaces. The amount of fluoride uptake by enamel was investigated by using a specific fluoride electrode and acid-etching biopsy technique.


RESULTS
The amount of fluoride taken up from Fuji II and Fuji II LC by permanent and primary tooth enamel was found to be statistically significant. However, no significant fluoride uptake from Optibond and Liner Bond 2 was found.


CONCLUSIONS
Fuji II and Fuji II LC glass-ionomer materials seemed to provide more effective fluoride release than did Optibond and Liner Bond 2 in permanent and primary enamel.
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Department of Pedodontics, Aegean University, Faculty of Dentistry, Bornova, Izmir, Turkey. kocatas@dishekimligi.ege.edu.tr
Kocatas
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Alpöz
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D000704:Analysis of Variance; D002327:Cariostatic Agents / Q000493:pharmacokinetics*; D003743:Dental Enamel / Q000378:metabolism; D003745:Dental Enamel Permeability; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D005459:Fluorides / Q000493:pharmacokinetics*; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006801:Humans; D008689:Methacrylates / Q000737:chemistry; D008963:Molar; D019279:Resin Cements / Q000737:chemistry; D012117:Resins, Synthetic / Q000737:chemistry; D014094:Tooth, Deciduous / Q000378:metabolism
D002327:Cariostatic Agents; C084544:Clearfil Linerbond System; D017220:Dentin-Bonding Agents; C079765:Fuji II LC cement; D005899:Glass Ionomer Cements; D008689:Methacrylates; C092987:Optibond; D019279:Resin Cements; D012117:Resins, Synthetic; C084541:Fuji glass-ionomer lining cement; D005459:Fluorides