title: An evalution of compressive strength of newer nanocomposite: An in vitro study.
abstract: OBJECTIVE
  The purpose of the study is to assess and compare compressive strength of newer nanocomposites (FiltekZ350, Ceram X Mono, Ceram X Duo) with microhybrid (Tetric Ceram) and to compare difference in compressive strength of newer nanocomposites.
  
  
  METHODS
  Forty eight specimens of composite were fabricated using customized biparpite brass mold measuring 5mm x 5mm and were grouped with twelve specimens in each Group I : Tetric Ceram, Group II: Filtek Z 350, Group III : Ceram X Mono, Group IV : Ceram X Duo. Composite resins are placed in cylindrical recesses and covered with mylar strip and are cured using QHL light curing unit. Compressive strength is evaluated using Instron machine. Results are statistically analyzed using One way Anova and Student t test. Analysis demonstrated that nanocomposites have better compressive strength than micro hybrid (P<0.001).
  
  
  RESULTS
  Within the limitations of the study, it can be concluded that nanocomposites have better compressive strength than microhybrid composite and nanocomposite showed optimal compressive strength of 312 - 417 Mpa.
authors.affiliation: Department of Conservative Dentistry And Endodontics, A.B. Shetty Memorial Institute Of Dental Sciences, Deralakatte, Mangalore, India.
authors.forename: Mithra N
authors.initials: MN
authors.lastname: Hegde
authors.forename: Priyadarshini
authors.initials: P
authors.lastname: Hegde
authors.forename: Shruthi
authors.initials: S
authors.lastname: Bhandary
authors.forename: K
authors.initials: K
authors.lastname: Deepika