| impaction | 1. <surgery> The driving of one fragment of bone into another so that the fragments are not movable upon each other; as, impaction of the skull or of the hip. 2. <medicine> An immovable packing;, a lodgment of something in a strait or passage of the body; as, impaction of the foetal head in the strait of the pelvis; impaction of food or feces in the intestines of man or beast. Origin: L. Impactio a striking: cf. F. Impaction. Source: Websters Dictionary (01 Mar 1998) |
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| impaction, dental | Teeth pressing together. For example, molar teeth (the large teeth in the back of the jaw) can be impacted, cause pain and require pain medication, antibiotics, and surgical removal. (12 Dec 1998) |
| mucoid impaction of bronchus | Plugging of the lumen of bronchi due to thickened mucus, interfering with ventilation of corresponding lung segments and leading to characteristic clustered linear and grape-like radiologic densities and occasionally atelectasis and pneumonia; characteristically seen in cystic fibrosis but it can occur in a variety of disease states. (05 Mar 2000) |
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| mucus impaction | Filling of the proximal bronchi, and also the bronchioles, with mucus. (05 Mar 2000) |
| dental impaction | A tooth which is within the alveolus (the tooth socket within the alveolar bone of the jaw) and is prevented from erupting into its normal position. (27 Sep 1997) |
| faecal impaction | <gastroenterology> A stationary collection of faeces in the distal colon or rectum. A condition more common in the geriatric patient. Enemas and laxatives are not usually effective and often requires manual manipulation. (27 Sep 1997) |
| food impaction | The forcible wedging of food between adjacent teeth during mastication, producing gingival recession and pocket formation. (05 Mar 2000) |