Section 872.3590 - Preformed plastic denture tooth(a)Identification. A preformed plastic denture tooth is a prefabricated device, composed of materials such as methyl methacrylate, that is intended for use as a tooth in a denture.(b)Classification. Class II (special controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 872.9 .52 FR 30097, Aug. 12, 1987, as amended at 84 FR 71812 , Dec. 30, 2019