21 CFR 872.3540 - OTC denture cushion or pad.
(a)Identification. An OTC denture cushion or pad is a prefabricated or noncustom made disposable device that is intended to improve the fit of a loose or uncomfortable denture, and may be available for purchase over-the-counter.
(1) Class I if the device is made of wax-impregnated cotton cloth that the patient applies to the base or inner surface of a denture before inserting the denture into the mouth. The device is intended to be discarded following 1 day's use. The class I device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to § 872.9.
(2) Class II if the OTC denture cushion or pad is made of a material other than wax-impregnated cotton cloth or if the intended use of the device differs from that described in paragraph (b)(1) of this section. The special controls for this device are FDA's:
(i) “Use of International Standard ISO 10993 ‘Biological Evaluation of Medical - Devices Part I: Evaluation and Testing,’ ” and
(ii) “OTC Denture Reliners, Repair Kits, and Partially Fabricated Denture Kits.”