The Evidence Database Topic Index in the American Dental Association's Center for Evidence-Based Dentistry provides access to a curated collection of current systematic reviews, critical summaries and practice guidelines.
The Evidence Database is updated quarterly so it is possible that you will find a more current review if you search a continuously updated database like PubMed.
You should also turn to a database like PubMed when you do not find a review on your topic in the ADA's DSR. Search first for a systematic review and then for individual research studies.
The Cochrane Collaboration is an international, non-profit, independent organization that publishes systematic assessments of evidence of the effects of healthcare interventions. Cochrane systematic review authors follow a published procedure that has become the gold standard for systematic reviews of interventions.
To learn more about how the Cochrane Collaboration works see the Cochrane Collaboration Newcomer's Guide.
Cochrane Oral Health Group
The Cochrane Oral Health Group focuses on producing systematic reviews covering "the prevention, treatment and rehabilitation of oral, dental and craniofacial diseases and disorders."
The Cochrane Library provides full-text access to Cochrane protocols and reviews. Off-campus access is restricted to UNC-CH affiliates.
Cochrane Review citations are included in the ADA Evidence Database and are indexed in PubMed.
Finding Meta-analysis in PubMed
Finding Systematic Reviews in PubMed
Finding Randomized Controlled Trial (RCT) in PubMed
Finding Cohort Studies in PubMed
Finding Case-Control Studies in PubMed