1694 Federal Register /Vol. 80, No. 8/Tuesday, January 13, 2015/Rules and Regulations ENVIRONMENTAL PROTECTION AGENCY 40 CFR Parts 260 and 261 [EPAâHQâRCRAâ2010â0742; FRLâ9728â5â OSWER] RIN 2050âAG62 Definition of Solid Waste AGENCY: Environmental Protection Agency (EPA).
obturator. 1. a disk or plate that closes an opening. 2. a prosthesis for closing an acquired or congenital opening of the palate (cleft palate). obturator sign pain on outward pressure on the obturator foramen as a sign of inflammation in the sheath of the obturator nerve, probably caused by appendicitis.(ob'tÅ«-rÄ'tÅr),ny structure that occludes an opening. 2. Denoting the obturator foramen, the obturator membrane, or any of several parts in relation to this foramen. 3. A prosthesis used to close an opening in the hard palate, usually in a cleft palate.
A palatal obturator is a prosthesis that totally occludes an opening such as an oronasal fistula (in the roof of the mouth). They are similar to dental retainers, but without the front wire. palatal obturator may be used in cases of a deficiency in tissue, when a remaining opening in the palate occurs. In some cases it may be downsized gradually so that tissue can strengthen over time and compensate for the decreasing size of the obturator.