A guide to the appraisal of research: 1. The nature of research.

Evidence-based dentistry has grown in recent years. The oceans of journals and research papers can be difficult to navigate. Gauging the quality of such publications and, more importantly, their clinical relevance may be challenging.This narrative review explores the nature and relevance of dental research to clinical dentistry and provides simple guidelines for critical appraisal of such research. In this respect, all dental clinical practice should be underpinned, where possible, with evidence that treatments carried out are contemporary and effective. CLINICAL RELEVANCE: A working knowledge of dental research and its relevance to clinical practice should allow practitioners to select best evidence to inform their clinical practice.