title: Contradicting information.
authors: P R H
authors: PR
authors: Newsome
mesh_terms: D002983:Clinical Competence / Q000592:standards*; D003800:Dental Technicians / Q000592:standards*; D006801:Humans; D008005:Licensure, Dental / Q000592:standards*; D011785:Quality Assurance, Health Care / Q000592:standards*; D014073:Tooth Bleaching / Q000295:instrumentation