[Code of Federal Regulations] [Title 21, Volume 8] [Revised as of April 1, 2001] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR872.3360] [Page 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 D--Prosthetic Devices Sec. 872.3360 Preformed cusp. (a) Identification. A performed cusp is a prefabricated device made of plastic or austenitic alloys or alloys containing 75 percent or greater gold and metals of the platinum group intended to be used as a temporary cusp (a projection on the chewing surface of a tooth) to achieve occlusal harmony (a proper bite) before permanent restoration of a tooth. (b) Classification. Class I. The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter. [52 FR 30097, Aug. 12, 1987, as amended at 59 FR 63008, Dec. 7, 1994]