2016 Glossary - 55

polyp n: an abnormal growth of tissue from the mucous membrane; it has a cylindrical and stalk-like
structure.
polysulfide n: a synthetic rubber used in dental impression materials; it contains chains of sulfur atoms
that are anionic or organic in nature.
positional record n: documentation that uses intraoral
and extraoral registrations to capture a specified
mandibular position.
posterior adj: located behind; in human anatomy often referred to as caudal; dorsal.
posterior border jaw relation n: an obsolete term that
refers to the border relationship between the maxilla
and the most posterior portion of the mandible.
posterior tooth form n: the morphologic characteristics of the posterior teeth, including the shape of the
tooth and its occlusal surfaces.
postmenopausal atrophy n: deterioration or degradation of tissue, including oral mucosa and bone,
that occurs in women after menopause.
postpalatal seal area n: area of the soft palate located
beyond the junction of the hard and soft palate that
should be compressed within physiological limits
by the post dam part of the maxillary conventional
complete denture to achieve an adequate peripheral
seal and denture retention.
postsurgical maxillary prosthesis n: a maxillofacial
prosthesis constructed to correct the intraoral/extraoral defect resulting from maxillary resection due
to a tumor or reconstruction of acquired or congenital defects of the maxilla to improve esthetics and
function.
postural contraction n: the minimal muscular contraction required to maintain mandibular posture.
postural position n: any mandibular position occurring during minimal muscular contraction.
pre-angled abutement 1 piece n: the 1-piece stock
dental implant abutment that has a preset angle to
the long axis of the implant fixture.
pre-angled abutement 2 piece n: a 2-piece stock dental implant abutment that has a preset angle to the
long axis of the implant fixture.

pre-ceramic solder n: a soldering procedure of the
metal framework of a metal-ceramic prosthesis before ceramic buildup at a temperature of 1075°C to
1120°C.
precious metal n: naturally occurring rare metallic element with a set of physical and chemical properties
unrivaled by many other materials. It is less chemically reactive than most elements, for example, gold,
platinum, osmium, iridium, palladium, ruthenium,
rhodium, and silver.
precious metal alloy n: a mixture of metals that contains a precious metal, for example, gold, platinum,
osmium, iridium, palladium, ruthenium, rhodium,
and silver.
precision attachment n: a mechanical retainer consisting of male (patrix) and female (matrix) pieces
that are closely fitting and use a frictional force to
attach fixed or removable partial dentures to the
crown of an abutment tooth or a restoration.
preliminary cast n: a cast produced from a preliminary
impression for use as a diagnostic tool or special tray
construction.
preliminary impression n: a negative likeness constructed using a stock tray, the cast produced from
this impression is mainly used in diagnosis, treatment planning, or special tray construction.
preload n: the tension created in an implant abutment
screw in consequence to torquing the screw.
preoperative wax-up n: a simulation of the clinical and
dental laboratory procedures planned for achieving
the desired esthetics and function for the patient's
prosthesis using dental wax on mounted diagnostic
casts.
preprosthetic surgery n: the surgical interventions
implemented before prosthodontics treatment to
improve the anatomy and/or contour of the residual alveolar ridge and/or its surrounding areas to improve the prognosis of the prosthodontic treatment.
prepubertal periodontitis n: see under periodontitis.
pressure area n: a region of the denture-supporting
area that has been subjected to more pressure than
other supporting areas from a dental prosthesis.
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