The American Dental Association defines evidence-based dentistry (EBD) as:
"an approach to oral health care that requires the judicious integration of systematic assessments of clinically relevant scientific evidence, relating to the patient's oral and medical condition and history, with the dentist's clinical expertise and the patient's treatment needs and preferences."
EBD is the integration of:
Systematic Review: a research method that is designed to answer a research question by identifying, coding, appraising and synthesizing a group of studies.
Meta-analysis: a systematic method that takes data from a number of independent studies and integrates them using statistical analysis.
Randomized Control Trial (RCT): An experimental study to assess the effects of a particular variable, e.g., a drug or treatment, in which subjects are assigned randomly to an experimental, placebo, or control group.
Bias (in regard to research): A tendency of procedures in study design, data collection, analysis, interpretation, review or publication, to yield results or conclusions that depart from the truth.