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What is the highest level of evidence?
True or false: A case review takes the randomized control trials available and summarizes them and identifies trends.
What does the literature report as more effective: a manual toothbrush or powered toothbrush?
True or false: According to Dr. Levin’s Systematic review and meta-analysis entitled “randomized controlled studies comparing oscillating-rotating and other powered toothbrushes,” sonic-powered toothbrushes are more beneficial than oscillating-rotating powered toothbrushes for plaque removal.