title: Cytotoxicity evaluation of a new fast set highly viscous conventional glass ionomer cement with L929 fibroblast cell line.
abstract: OBJECTIVE
  This study aims to evaluate the cytotoxicity of a new fast set highly viscous conventional glass ionomer cement (GIC) with L929 fibroblasts.
  
  
  METHODS
  The cement capsule was mixed and introduced into a paraffin wax mould. After setting, the cement was incubated in Dulbecco's Modified Eagle's Medium. Six replicates of the material extract were added to the culture medium in 96-well plates. L929 mouse fibroblast cells were added into the wells and then incubated for 48 h. Dimethylthiazol diphenyltetrazolium bromide test was performed for cytotoxicity evaluation.
  
  
  RESULTS
  The results showed that this GIC brand did not yield a half-maximal inhibitory concentration value, IC50, as the cell viability was above 50% at all concentrations. Cell viability over 90% was observed at the concentrations of 3.125 and 1.5625 mg/ml. Maximum concentration of the material showed cell viability of 59.4%.
  
  
  CONCLUSIONS
  This new fast set highly viscous conventional GIC showed low cytotoxicity to mouse fibroblast cells, and it can be suggested as a substitute for dental cements exhibiting a long setting time.
authors.affiliation: Department of Restorative Dentistry, School of Dental Sciences, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia.
authors.forename: Hany Mohamed Aly
authors.initials: HM
authors.lastname: Ahmed
authors.forename: Nor Shamsuria
authors.initials: NS
authors.lastname: Omar
authors.forename: Norhayati
authors.initials: N
authors.lastname: Luddin
authors.forename: Rajan
authors.initials: R
authors.lastname: Saini
authors.forename: Deepti
authors.initials: D
authors.lastname: Saini