Scaling and root planing (SRP) is a dental procedure that involves scraping stuff off of your teeth below the gumline.
Still trying to figure out how to get a probability vote by each paper...
Recolonization of the Subgingival Microflora After Scaling and Root Planing in Human Periodontitis http://www.joponline.org/doi/abs/10.1902/jop.1990.61.9.579
The Effectiveness of Subgingival Scaling and Root Planing I. Clinical Detection of Residual Calculus http://www.joponline.org/doi/abs/10.1902/jop.1990.61.1.3
Coming soon when I'm on my other computer: more experienced operators are better, but no one effectively cleans around furcations (root branching points).
WIP / more later