Evidence-based decision making in action: Part 2--evaluating and applying the clinical evidence.

This is the second of a two-part series addressing the use of evidence-based decision making (EBDM) in the use of home bleaching. In Part 1, a case scenario demonstrated the skills involved in (1) structuring a clinical question and (2) conducting an online search using PubMed.1 Part 2 demonstrates the third and fourth steps in the EBDM process, i.e., (3) critical appraisal to assess the validity of a study and (4) applying that information to clinical decision making. This 4-step approach to EBDM recognizes that clinicians can never be completely current with all conditions, medications, materials, and products. Thus, EBDM provides a mechanism for addressing these gaps in knowledge in order to provide the best care possible.