{"data":{"id":"us/21-cfr-872.3680","jurisdiction":"us","citation":"21 CFR 872.3680","heading":"Polytetrafluoroethylene (PTFE) vitreous carbon materials.","body":"(a) Identification. Polytetrafluoroethylene (PTFE) vitreous carbon material is a device composed of polytetrafluoroethylene (PTFE) vitreous carbon intended for use in maxillofacial alveolar ridge augmentation (building up the upper or lower jaw area that contains the sockets in which teeth are rooted) or intended to coat metal surgical implants to be placed in the alveoli (sockets in which the teeth are rooted) or the temporomandibular joints (the joint between the upper and lower jaws).\n(b) Classification. Class II.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER H—MEDICAL DEVICES","PART 872—DENTAL DEVICES","Subpart D—Prosthetic Devices"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-21.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:47Z","sha256":"98a53f11aaf74e95452423840229eff7830d221c80a8e687454edb3255d23517","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-872.3670","next":"us/21-cfr-872.3690"},"notice":"GroundRules: Original legal text. Not legal advice."}