Category: R

Degeneration of tooth roots caused by endocrine imbalance or excessive pressure of orthodontic appliances. Root resorption may be categorized as internal or external. Internal root resorption, sometimes called internal granuloma, is usually a result of pulpal trauma. Affected teeth demonstrate a radiolucent enlargement within the pulp canal on a dental radiograph. External root resorption has…

A dental instrument for retrieving root fragments resulting from tooth extraction; also called apical elevator.  

The development of tooth roots by Hertwig’s root sheath and the epithelial diaphragm. It involves the formation of root dentin with a covering of cementum essential for the attachment of the tooth to the surrounding bony tissues. Root formation or development continues for months or years after the tooth has erupted into the mouth.  

A general term for one of several periodontal techniques used to treat gingival recession. Dental roots may be covered with tissue grafts, flaps, or tissue regenerative procedures.  

In health care delivery a formal study of a problem used to determine how to avoid or prevent similar problems in the future.  

The source of a problem, that is, the underlying reason that it occurred.  

The top of the nose where it meets and makes an angle with the base of the forehead between the eyes.  

The origin of the mesentery of the small intestine along the back wall of the abdomen. The part of the abdominal peritoneum that stretches from where the duodenum meets the jejunum to the junction of the ileum and cecum.  

One of the letters used by the ancient Romans for numeration, as distinct from the arabic numerals that we now use. In Roman notation, values are changed either by adding one or more symbols to the initial symbol or by subtracting a symbol to the right of it. For example, V is 5, IV is…

In modular education, an approach to learning in which students complete objectives at their own pace and advance to new objectives (and ultimately, to graduation) only after demonstrating mastery of each prerequisite.