title: Release of fluoride from glass polyalkenoate (ionomer) cement subjected to radiant heat.
abstract: OBJECTIVE
  This study was designed to examine the effect of the application of radiant heat on the fluoride release from the surface of a glass polyalkenoate cement.
  
  
  METHODS
  The radiant heat was applied at different intensities and for different time intervals using a high-intensity fibreoptic quartz halogen light source. A standard technique was used to measure the amount of fluoride released from one surface of a cement specimen into deionized water. Fluoride release was measured for a time period of over 2 years.
  
  
  RESULTS
  Results showed that fluoride was still being released 2 years after placement. The application of radiant heat did not have a statistically significant effect on the release of fluoride from the surface of this material.
  
  
  CONCLUSIONS
  There appeared to be a trend suggesting that the greater the amount of heat applied, the less fluoride was released from the surface of the cement. A considerable inter- and intrabatch variation was noted in the amount of fluoride released from the cement.
authors.affiliation: Department of Conservative Dentistry, Dental School, University of Dundee, UK.
authors.forename: M J
authors.initials: MJ
authors.lastname: Woolford
authors.forename: A R
authors.initials: AR
authors.lastname: Grieve
mesh_terms: D005336:Fiber Optic Technology / Q000295:instrumentation; D005459:Fluorides / Q000737:chemistry*; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006358:Hot Temperature; D008027:Light; D013499:Surface Properties; D013997:Time Factors
chemical_list: D005899:Glass Ionomer Cements; D005459:Fluorides