[Code of Federal Regulations] [Title 21, Volume 8] [Revised as of April 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR872.1720] [Page 315-316] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 872--DENTAL DEVICES--Table of Contents Subpart B--Diagnostic Devices Sec. 872.1720 Pulp tester. (a) Identification. A pulp tester is an AC or battery powered device intended to evaluate the pulpal vitality of teeth by employing high frequency current [[Page 316]] transmitted by an electrode to stimulate the nerve tissue in the dental pulp. (b) Classification. Class II.