title: Factors affecting the bond strength of self-etch adhesives: A meta-analysis of literature.
abstract: OBJECTIVE
  The purpose of this study is to critically evaluate the factors that affect the bond strength of one-step and two-step self-etch adhesives by using meta-analysis.
  
  
  METHODS
  Potential papers that were selected according to inclusion and exclusion criteria from articles were published in 13 peer-reviewed journals using "PubMed data base". From each report, means and standard deviations of bond strengths were extracted and tabulated with corresponding experimental conditions.
  
  
  RESULTS
  All the studied parameters showed no significant difference, except for dentin origin/site and bonding area. In addition, statistical analysis done with ANOVA showed statistical significance between the one-step and two-step self-etch adhesives.
  
  
  CONCLUSIONS
  Our analysis has showed that two-step self-etch adhesive system showed a superior in vitro performance in comparison to one-step self-etch system. Nevertheless, certain factors such as dentin origin, site and area of bonding affect the bond strength of adhesives.
authors.affiliation: Department of Conservative Dentistry, Saveetha Dental College, Saveetha University, Chennai, India.
authors.forename: P Pranau
authors.initials: PP
authors.lastname: Vanajasan
authors.forename: Malarvizhi
authors.initials: M
authors.lastname: Dhakshinamoorthy
authors.forename: Cv Subba
authors.initials: CS
authors.lastname: Rao