{"data":{"id":"us/21-cfr-872.1840","jurisdiction":"us","citation":"21 CFR 872.1840","heading":"Dental x-ray position indicating device.","body":"(a) Identification. A dental x-ray position indicating device is a device, such as a collimator, cone, or aperture, that is used in dental radiographic examination. The device is intended to align the examination site with the x-ray beam and to restrict the dimensions of the dental x-ray field by limiting the size of the primary x-ray beam.\n(b) Classification. Class I (general 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.","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 B—Diagnostic 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":"554138ef1ebd8d94280b4bdbb0634dd170794d8fac5244b26bb7d11fc6154e2f","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-872.1830","next":"us/21-cfr-872.1850"},"notice":"GroundRules: Original legal text. Not legal advice."}