Subgingival polishing with a teflon-coated sonic scaler insert in comparison to conventional instruments as assessed on extracted teeth (II). Subgingival roughness.
Unit of Periodontology, Department for Restorative Dentistry, Periodontics, and Pediatric Dentistry, School of Dentistry, Rotbergerstr. 8, 17 487 Greifswald, Germany. kocher@mail.uni-greifswald.de
