UCR:
Usual, customary and reasonable fees.

UNERUPTED TOOTH:
A tooth that has not pushed through the gum and assumed its correct position in the dental arch.

VENEER:
Plastic or porcelain facing bonded directly to a tooth to improve its appearance. See laminate.

VERTICAL DIMENSION:
Arbitrary space between upper and lower jaws upon closure; may decrease over time due to wear, shifting or damage to the teeth.

WISDOM TEETH:
Third (last) molars that usually erupt at age 18-25 (when "wisdom is attained").

XEROSTOMIA:
Dry mouth or decrease in the production of saliva.

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