title: Comparison of the Solubility of Conventional Luting Cements with that of the Polyacid Modified Composite Luting Cement and Resin-modified Glass lonomer Cement.
abstract: BACKGROUND
  This study was planned to find the solubility of the conventional luting cements in comparison with that of the polyacid-modified composite luting cement and recently introduced resin-modified glass ionomer cement (RMGIC) with exposure to water at early stages of mixing.
  
  
  METHODS
  An in vitro study of the solubility of the following five commercially available luting cements, viz., glass ionomer cement (GIC) (Fuji I, GC), zinc phosphate (Elite 100, GC), polyacid-modified resin cement (PMCR) (Principle, Dentsply), polycarboxylate cement (PC) (Poly - F, Dentsply), RMGIC (Vitremer, 3M), was conducted. For each of these groups of cements, three resin holders were prepared containing two circular cavities of 5 mm diameter and 2 mm depth. All the cements to be studied were mixed in 30 seconds and then placed in the prepared cavities in the resin cement holder for 30 seconds.
  
  
  RESULTS
  From all of the observed luting cements, PMCR cement had shown the lowest mean loss of substance at all immersion times and RMGIC showed the highest mean loss of substanceat all immersion times in water from 2 to 8 minutes. The solubility of cements decreased by 38% for GIC, 33% for ZnPO4, 50% for PMCR, 29% for PC, and 17% for RMGIC.
  
  
  CONCLUSIONS
  The PMCR cement (Principle-Dentsply) had shown lowest solubility to water at the given time intervals of immersion. This was followed by PC, zinc phosphate, and GIC to various time intervals of immersion.
authors.affiliation: Department of Prosthodontics, A.J. Institute of Dental Sciences Mangaluru, Karnataka, India, e-mail: dr.karkera.reshma@gmail.com.
authors.forename: Reshma
authors.initials: R
authors.lastname: Karkera
authors.affiliation: Department of Prosthodontics, College of Dental Science and Hospital, Amargadh, Gujarat, India.
authors.forename: A P Nirmal
authors.initials: AP
authors.lastname: Raj
authors.affiliation: Department of Prosthodontics, Malabar Dental College and Research Centre, Malappuram, Kerala, India.
authors.forename: Lijo
authors.initials: L
authors.lastname: Isaac
authors.affiliation: Department of Conservative Dental Sciences, College of Dentistry, Prince Sattam Bin Abdulaziz University, Al-Kharj Kingdom of Saudi Arabia.
authors.forename: Mohammed
authors.initials: M
authors.lastname: Mustafa
authors.affiliation: Department of Prosthodontics, College of Dentistry, Jazan University, Jazan, Kingdom of Saudi Arabia.
authors.forename: R Naveen
authors.initials: RN
authors.lastname: Reddy
authors.affiliation: Department of Periodontics, College of Dental Sciences and Research Center, Ahmedabad, Gujarat, India.
authors.forename: Mathew
authors.initials: M
authors.lastname: Thomas
mesh_terms: D003738:Dental Cements; D005899:Glass Ionomer Cements; D011076:Polycarboxylate Cement; D019279:Resin Cements; D012995:Solubility; D015036:Zinc Phosphate Cement
chemical_list: D003738:Dental Cements; D005899:Glass Ionomer Cements; D011076:Polycarboxylate Cement; D019279:Resin Cements; D015036:Zinc Phosphate Cement
keywords: Dental cements; Glass ionomer cement Luting cements.