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Glossary of Dental Terminology Chapter 1

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abrasion
scrape from; wearing away of a tooth surface from abnormal causes.
abscess
collection of pus
absorption
drug substance transfer from the administration site by body fluids
syncope
a temporary loss of consciousness due to lack of adquate supply of blood to the brain; also known as fainting or swooning.
xerostomia
dryness of the mouth caused by the lack of normal salivary secretion.
cranium
the portion of the skull that encloses the brain. Eight bones make up this section of the skull.
temporal bones
two fan-shaped bones, one on each side of the skull.
frontal bone
a single bone in the frontal or anterior region.
occipital bone
one large, thick bone in the lower back of the head that forms the base of the skull.
ethmoid bone
a spongy bone forming part of the anterior nasal fossa of the skull.
sphenoid bone
a large bone at the base of the skull situated between the occipital and ethmoid bones in front of and between the parietal and the temporal bones on the side.
zygomatic bones
two facial bones, one under each eye, that form and give shape to the cheekbone. Also called the malar bones.
maxillary bones
two bones, one each on the left and the right, that unite to form the upper jaw and suport the maxillary teeth.
palatine bones
two bones, one each on the left and the right, that form the hard palate of mouth and the nasal floor.
nasal bones
two bones, one left and one right, that form the arch or bridge of the nose.
lacrimal bones
the two bones at the inner or nose side of the orbital cavity.
inferior conchae
two thin scroll-like bones that form the lower part of the interior of the nasal cavity.
mandible
the strong, horseshoe-shaped bone that forms the lower jaw.
vomer
a single bone that forms the lower posterior part of the nasal septum.
malleus
the largest of the three ossicles. It is located in the middle ear and serves as the ear mallet.
incus
ossicle of the middle ear. It serves as the ear anvil.
stapes
ossicle in the middle ear. It is commonly called the ear stirrup.
hyoid bone
horseshoe-shaped bone lying at the base of the tongue. It does not articulate with any other bone.
sinus
an air pocket or cavity in a bone which lightens the bone, warms the air intake, and helps form sounds. Sinus cavities receive their names from the bones in which they are situated.
ethmoid sinus
sinus located in the ethmoid bone, at the side of the eye.
sphenoid sinus
sinus located in the sphenoid bones, situated behind the eyes.
frontal sinus
sinus located in the maxilla. It is the largest and is called the atrium of Highmore. Is easily seen on x-rays and is used as a landmark in x-ray films.
suture (1)
a line where two or more bones unite in an immovalbe joint.
suture (2)
stitch or staple repairing or closing a wound.
sagital suture
the union line between the two parietal bones on top of skull.
coronal suture
the junction of the frontal and the parietal bones. May be referred to as the baby's "soft spot" or fontanel.
lamboid suture
located between the parietal bone and the upper border of the occipital bone.
temporoparietal suture
union line located between the temporal and parietal bones. It is also known as the squamous suture.
UCR
usual, customary, and reasonable
ADA
American Dental Association
CDC
Centers for Disease Control
MSDS
manufacturer's safety data sheet
DHCW
Dental Health Care Worker
EPA
Environmental Protection Agency
SOP
standard operating procedure
FDA
Food and Drug Administration
RCT
root canal treatment
CPR
cardiopulmonary resuscitation

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