title: A comparative evaluation of microleakage around class V cavities restored with different tooth colored restorative materials.
abstract: OBJECTIVE
  To evaluate and compare microleakage around class V cavities restored with silorane and dimethacrylate-based composite resins.
  
  
  METHODS
  Standard Class V cavities were prepared on the buccal surface of 60 non-carious human molars. Teeth were randomly divided into 3 groups (n=20) depending on the restorative materials used, Silorane-based composite resin (Filtek P90-SIL), dimethacrylate-based composite resin (Solare P-SOLP) and light-cure glass ionomer cement (GC Fuji II LC -LCGIC). The restored teeth with these tooth-coloured restorative materials were thermo-cycled and then immersed in 2% Rhodamine B dye under vacuum pressure for 48 hours. All teeth were bisected longitudinally in a bucco-lingual direction and observed under stereo-microscope at 30X magnification for the evidence of dye penetration. The data were analysed using one-way analysis of variance (ANOVA) and Tukey's Post Hoc tests (α=0.05).
  
  
  RESULTS
  SIL composite resin showed the least microleakage in Class V cavity restorations with a statistically significant difference to SOLP and LCGIC. Sixty five percent of specimens in SIL group, 30% in SOLP group and 5% in LCGIC group showed dye penetration up to one-third of the cavity depth, while 5% in SIL group, 5% in SOLP group and 35% in LCGIC group showed dye penetration up to two-thirds of the cavity depth, and 30% in SIL group, 65% in SOLP group and 60% in LCGIC group showed dye penetration up to the axial wall.
  
  
  CONCLUSIONS
  Silorane-based composite exhibited least microleakage in restoring class V cavities compared to dimethacrylate-based composite resin and light-cured glass ionomer cement.
authors.affiliation: Department of Restorative Dentistry, School of Dentistry, International Medical University, Kuala Lumpur, 57000, Malaysia, Tel: 919815493618; e-mail: abhishek_parolia@imu.edu.my.
authors.forename: Abhishek
authors.initials: A
authors.lastname: Parolia
authors.forename: Namrata
authors.initials: N
authors.lastname: Adhauliya
authors.forename: Isabel Cristina
authors.initials: IC
authors.lastname: de Moraes Porto
authors.forename: Kundabala
authors.initials: K
authors.lastname: Mala