Denture Cleanser Allergic Reactions and Misuse

FDA notified dental healthcare professionals and patients of the risk of serious allergic reactions in users of denture cleansers. These adverse events, including abdominal pain, vomiting, seizures, hypotension and difficulty breathing, have occurred both when the product has been used properly as well as from improper use. These events can occur soon after first use or after years of use. FDA believes that the ingredient responsible for these reactions is persulfate, a known allergen. Persulfates are used in most denture cleansers to help clean and bleach the dentures. FDA is recommending that all manufacturers of denture cleansers modify their labeling to include warning information that the product contains persulfates and recommends improving the directions for use on their labeling in order to reduce misuse.
Source: http://www.fda.gov/cdrh/safety/022508-denturecleansers.html

Electric Dental Handpieces

FDA informed healthcare professionals about serious patient injuries, including third degree burns, associated with the use of poorly maintained electric dental handpieces during dental procedures. Some patients had third degree burns which required plastic surgery. Burns may not be apparent to the operator or the patient until after the tissue damage occurred, because the anesthetized patient cannot feel the tissue burning and the handpiece housing insulates the operator from the heated attachment. Although the reported burns occurred during the cutting of tooth and bone, tooth extraction and other dental surgical procedures, overheating can also occur during any dental procedure. This problem is not limited to dentistry. Rotary surgical handpieces can cause patient burns during orthopedic procedures, as reported in the July 2003 edition of FDA Patient Safety News (http://www.fda.gov/cdrh/psn/show17-burns.html). Read the FDA Public Health Notification for specific actions to prevent or minimize serious patient injuries associated with using electric dental handpieces.

Source: http://www.fda.gov/cdrh/safety/121207-dental.html