The American Dental Association Center for Evidence-Based Dentistry continues to add to their database of critical appraisals and have recently published  a number of critical appraisals :-

The Relationship between Bisphosphonates and Atrial Fibrillation

Socket preservation of implant sites

Possible Inverse Relationship between Level of Educational Attainment and Risk for Chronic Periodontitis

Preoperative antisepsis with topical chlorhexidine in clean-contaminated surgery may reduce postoperative wound infection.