title: Comparative Evaluation of Fluoride Releasing Ability of Various Restorative Materials after the Application of Surface Coating Agents - An In-vitro Study.
abstract: BACKGROUND
  Fluoride plays a key role in prevention of dental caries and is also an essential element for oral health promotion both in children and adults.
  
  
  OBJECTIVE
  The aim of the present study was to evaluate the effect of surface coating (petroleum jelly, G-Coat Plus) on the fluoride releasing property of conventional Glass Ionomer Cement (GIC) and Zirconomer.
  
  
  METHODS
  A total of 30 disk shaped brass mold specimens (6±0.1mm in diameter and 2±0.1mm thickness) for each test group were fabricated with conventional GIC (Group A) and Zirconomer (Group B). These test groups were further divided into three subgroups of 10 each. The unprotected specimens act as control (Group A1 and B1), G-Coat Plus specimens as (Group A2 and B2) and for the remaining specimens petroleum jelly was applied (Group A3 and B3). Fluoride ion concentration was measured with a combination of fluoride ion specific electrode and ion analyzer for every 24 hours for 15 days. The data was statistically analyzed using Kruskal Wallis and Mann-Whitney U test.
  
  
  RESULTS
  The Group B released significantly more fluoride than Group A. Among all the subgroups the greatest amount of fluoride was released from Group B1, in the first 24 hours followed by A1 and B2. The least was observed on 15thday with Group B3 and A3.
  
  
  CONCLUSIONS
  Both the tested materials (GIC and Zirconomer) used in the study exhibited fluoride release whether protected or unprotected with surface coating. Though there was a difference between the groups, the pattern of fluoride release was similar and continuous throughout the study period i.e., first the initial burst followed by sustained release. The results revealed Zirconomer released more fluoride and is comparable to conventional GIC.
authors.affiliation: Postgraduate Student, Department of Pedodontics and Preventive Dentistry, Sibar Institute of Dental Sciences , Guntur, Andhra Pradesh, India .
authors.forename: Gvs
authors.initials: G
authors.lastname: Kishore
authors.affiliation: Professor and Head, Department of Pedodontics and Preventive Dentistry, Sibar Institute of Dental Sciences , Guntur, Andhra Pradesh, India .
authors.forename: A J
authors.initials: AJ
authors.lastname: Sai-Sankar
authors.affiliation: Assistant Professor, Department of Pedodontics and Preventive Dentistry, Sibar Institute of Dental Sciences , Guntur, Andhra Pradesh, India .
authors.forename: Mjs
authors.initials: M
authors.lastname: Pratap-Gowd
authors.affiliation: Reader, Department of Pedodontics and Preventive Dentistry, Sibar Institute of Dental Sciences , Guntur, Andhra Pradesh, India .
authors.forename: M
authors.initials: M
authors.lastname: Sridhar
authors.affiliation: Reader, Department of Pedodontics and Preventive Dentistry, Sibar Institute of Dental Sciences , Guntur, Andhra Pradesh, India .
authors.forename: Kakarla
authors.initials: K
authors.lastname: Pranitha
authors.affiliation: Assistant Professor, Department of Pedodontics and Preventive Dentistry, Sibar Institute of Dental Sciences , Guntur, Andhra Pradesh, India .
authors.forename: V S
authors.initials: VS
authors.lastname: Sai-Krishna
keywords: G-Coat plus; Glass ionomer cement; Petroleum jelly; Zirconomer