Category: D

A sharp-pointed instrument used to detect unsound enamel, carious lesions, or imperfect margins of restorations in teeth.  

In respiration, the movement of the diaphragm from its level during full exhalation to its level during full inhalation. Normal diaphragmatic excursion is 5 to 7 cm bilaterally in adults. It may be seen during fluoroscopic or ultrasonographic examinations of the chest, or percussed during physical examination of the chest wall.  

A radiographic examination in which a radiopaque and a radiolucent contrast medium are used simultaneously to visualize internal anatomy.  

A system of principles governing dental practice; a moral obligation to render the best possible quality of dental service to the patient and to maintain an honest relationship with other members of the profession and society at large.  

The most common variation in the tooth eruption pattern. It may be due to crowding or to various genetic, endocrine, or physiological factors.  

The wearing away of the surface layer (enamel) of a tooth. The erosion of the tooth enamel, often caused by acids from plaque or other chemicals, results in the loss of the tooth’s outer layer. Initially, this erosion manifests as a dull or frosted appearance on the tooth surface. As the issue continues to progress,…

The sense of balance while the body or head is in motion. This is maintained by coordinating data from postural (stretch) receptors in the limbs with data from the inner ear and cerebellum.  

An epithelioma that invades and destroys tissue, forming irregular rounded ulcers.  

An enzyme, such as carboxylase, that separates carbon dioxide from organic acids.  

An enzyme, dextrin-1-6-glucosidase, that removes a carbohydrate unit from molecules that contain short carbohydrate units attached as side chains.