Journal of clinical periodontology
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J. Clin. Periodontol. · Dec 2002
Randomised controlled trials and publication trends in periodontal research during 1980-2000.
To study publication trends, as well as the number and proportion of randomised controlled trials covering different areas of periodontal research (RCT-Ps). ⋯ The annual number of RCT-Ps increased substantially during 1980-2000, and a few clinical research areas predominated. Future research should give priority to areas where clinical evidence is scarce and where high-quality RCT-Ps are most needed.