title: Ultrasonics in periodontal therapy--the paradigm has changed.
authors.forename: L K
authors.initials: LK
authors.lastname: Croft
mesh_terms: D006801:Humans; D010510:Periodontal Diseases / Q000628:therapy*; D016745:Root Planing / Q000295:instrumentation*; D014464:Ultrasonic Therapy / Q000295:instrumentation*