title: A probing question.
authors.forename: N H
authors.initials: NH
authors.lastname: Stoller
authors.forename: K
authors.initials: K
authors.lastname: Ela
mesh_terms: D006801:Humans; D010510:Periodontal Diseases / Q000175:diagnosis; D010514:Periodontal Pocket / Q000175:diagnosis*; D010517:Periodontics / Q000295:instrumentation*; D010518:Periodontitis / Q000175:diagnosis*