2016 Glossary - 58
pulpitis n: a state of inflammation of the dental pulp
that can be reversible or nonreversible.
pulpotomy n: complete removal of the coronal portion of the dental pulp as a means to stop the pain of
a pulpitis emanating from inflamed coronal pulp tissue or as a means to allow viable radicular pulp tissue
to continue to form the root of a blunderbuss apex
unaffected by the irreversible pulpitis of the coronal
pulp vitality tests n: tests used to determine whether the pulp of a tooth is without vitality, inflamed, or
within normal limits of health. The different tests include electrical stimulation, thermal stimulation, or
the more invasive cutting into dentin with a burr to
pumice n: sandlike volcanic glass that is used as a polishing agent in dentistry. Different sized particles
proceeding from coarser to finer are used to progressively smooth a hard surface. Materials polished may
include natural tooth structure, acrylic, and other restorative materials.
pumice (pumiced pumicing) v: to polish the surface of
a tooth or restoration with pumice.
purulent adj: in the state of being infiltrated, filled, or
pus n: a generally viscous, yellowish-white fluid formed
in infected and inflamed tissue consisting of white
blood cells, cellular debris, necrotic tissue, and bacteria.
pustule n: a reaction of tissue to infection that results in
a small superficial elevation caused by the collection
of pus under the skin.
pyogenic adj: pus producing.
pyorrhea n: a description of periodontal disease not in
common use in today's vernacular.
pyramidal fracture n: a complex of fractures of the
midfacial bones involving the upper jawbone. The
main fracture lines meet above the nasal bones and
form a triangular section detached from the skull. Referred to as the La Forte II fracture.
uartz n: the second most abundant mineral in the earth's continental crust. It is an
extremely hard material made up of a continuous framework of SiO4.
AD: radiation absorbed dose, a unit of absorbed dose of ionizing radiation equivalent
to an energy of 100 ergs per gram of irradiated
radiation n: in dentistry, usually refers to ionizing radiation. The energy that comes from a source of unstable atoms, which have excess energy, is then passed
through tissue, producing charged particles called
ions. These unstable ions are radioactive and become stable by release of energy, which can be in the
form of electromagnetic radiation, such as X-rays, or
particulate rays, such as gamma rays.
radiation shield n: a prosthesis used during radiation
treatment that serves to protect or shield adjacent
areas of tissue not meant to be radiated from orthovoltage during treatment of malignant lesions of the
head and neck area. Also known as a radiation positioner.
radiation source prosthesis n: a prosthesis made for
a specific patient to aid in the trajectory and targeting of radiation to an anatomic site in order to treat a
tumor at that site.
radicular adj: describing the root component of a
radiograph n: an image generated on a sensitive surface (sensor) by a form of radiation other than visible
light, specifically, an X-ray or gamma ray picture.
radiograph v: to produce a radiographic image of a
hard tissue structure usually composed of varying
radiolucent adj: having properties such that roentgen
rays and radiant energy are minimally absorbed; radiographic film appears darker representing radiolucent areas due to the less effective absorption of
radiopaque adj: having properties such that roentgen
rays or other forms of radiant energy are absorbed
more readily leading to less pass-through of such