retention cyst |
A cyst resulting from some obstruction to the excretory duct of a gland.
Synonym: distention cyst, secretory cyst.
(05 Mar 2000) |
mucous cyst |
A retention cyst resulting from obstruction in the duct of a mucous gland.
Synonym: mucocele.
(05 Mar 2000) |
partial denture retention |
The fixation of a removable partial denture by the use of clasps, indirect retainers, or precision attachments.
(05 Mar 2000) |
retention |
1. The persistent keeping within the body of matters normally excreted.
2. In cavity preparation, the prevention of displacement of a restoration.
3. <dentistry> The period during which the patient is wearing an appliance to maintain and stabilise the teeth in the position into which they were moved.
4. <psychology> The persistence to perform a learned behaviour (facts or experiences) after an interval has elapsed in which there has been no performance or practice of the behaviour.
Origin: L. Retentio, from retentare = to hold firmly back
(18 Nov 1997) |
retention area |
An area of a tooth provided during its preparation for restoration that will aid in holding the restoration in place.
See: retention groove, retention point.
(05 Mar 2000) |
retention arm |
A flexible segment of a removable partial denture that engages an undercut on an abutment and is designed to retain the denture.
(05 Mar 2000) |
retention form |
The shape of a cavity preparation that prevents displacement of the dental restoration by lateral or tipping forces as well as masticatory forces.
(05 Mar 2000) |
retention groove |
One of the groove's forming opposing vertical constrictions in a tooth to aid in retention of a dental restoration.
(05 Mar 2000) |
retention jaundice |
Jaundice due to insufficiency of liver function or to an excess of bile pigment production; the bilirubin is unconjugated because it has not passed through the liver cells; van den Bergh test is indirect.
(05 Mar 2000) |
retention point |
A provision made within a cavity preparation of a tooth to hold in place the first pieces of gold when placing a direct gold restoration.
(05 Mar 2000) |
retention polyp |
A smoothly rounded mucosal hamartoma of the large bowel, which may be multiple and cause rectal bleeding, especially in the first decade of life; it is not precancerous.
Synonym: retention polyp.
(05 Mar 2000) |
retention suture |
<surgery> A heavy reinforcing suture placed deep within the muscles and fasciae of the abdominal wall to relieve tension on the primary suture line and thus obviate postoperative wound disruption.
Synonym: tension suture.
(05 Mar 2000) |
retention vomiting |
<gastroenterology, physiology> Vomiting due to mechanical obstruction, usually hours after ingestion of a meal.
(05 Mar 2000) |
chylomicron retention disease |
An inherited disorder in which apolipoprotein B-48 is retained in intestine and absent in plasma; results in fat malabsorption.
(05 Mar 2000) |
dental prosthesis retention |
The retention of a dental prosthesis in place by design, device, or adhesion.
(12 Dec 1998) |