2016 Glossary - 7
the tooth or other object (ie, preparation of teeth for
restoration with a crown or alteration of a tooth in order to provide a guide plane for a partial prosthesis).
axial surface n: the outer surface of a tooth, dental
implant, or implant abutment head that is oriented
with its long axis.
axial wall n: the surface of a tooth or implant abutment
that correlates with its long axis.
axis n: an actual or imaginary central straight line passing through the center of a body (ie, jaw bone, tooth,
dental implant, or implant abutment) around which
the body could rotate if it could revolve.
axis of preparation n: the prepared or intended path
of insertion and removal for a dental restoration as it
relates to its axial surface.
axis orbital plane n: the horizontal imaginary line or
plane determined by the transverse horizontal axis
of the mandible as it correlates with the palpated
lowermost point found at the inferior margin of either the left or right bony orbit (orbitale). This plane
is used as a horizontal orientation point to position
teeth and/or dental implants in the ideal horizontal
position in relation to the temporomandibular joint
alanced articulation n: bilateral anterior and
posterior occlusal contacts that occur simultaneously when the teeth are in centric and eccentric positions. This is determined not only
by positions of the teeth but also by the influence of
the temporamandibular joint.
balancing interference n: (1) tooth contact not in harmony with balanced articulation on the side of the
translating condyle as the mandible moves in lateral
excursions; (2) unwanted contact(s) of opposing occlusal surfaces on the nonworking side that are not in
harmony with balanced articulation.
balancing side n: the side from which the mandible
moves (opposite the working side or primary chewing side) during lateral excursion.
bar n: a straight or curvilinear piece of metal of greater
length than width. It may be used as one or more of
the following: lever, barrier, fastener, handle, or sup-
port. In dentistry, it is used to join 2 or more parts of a
removable or fixed dental prosthesis or as a connector between dental implant abutments that may be
used to retain a removable prosthesis.
basal bone n: the portion of the mandible and maxillary bones that excludes the alveolar process.
base metal n: any metallic element that is subject to
tarnish and corrosion. See also noble metal.
base metal alloy n: an alloy composed of nonnoble
baseplate n: a rigid, comparatively thin layer of wax,
shellac, or thermoplastic (heat, chemical, photo activated) polymer that conforms to the edentulous
surface of a definitive cast. It is often intended to be
a base that can have a wax occlusion rim or similar
material, attached for the purpose of recording a jaw
position and/or setting prosthetic teeth in wax for
try-in. See also record base.
baseplate wax n: a wax that has sufficient stiffness so
as to be usable for making occlusion rims or waxing
dentures or for performing other related procedures.
basket endosteal dental implant n: an endosteal
dental implant with a body that is shaped like a perforated cylinder.
Behcet's syndrome n: a condition that is more common in men than women and is characterized by
recurrent genital and oral ulcers plus ocular inflammation. The definitive cause is unknown.
Bennett angle n: the angle between the sagittal plane
and the condylar path on the balancing side during
lateral mandibular movements.
bifurcation n: the site where a division into 2 parts occurs, as where a tooth divides into 2 roots.
bilateral balanced articulation n: the concurrent and
synchronized anterior and posterior occlusal contact
of teeth on both sides of the mouth in centric, lateral, and protrusive positions. Also known as balanced
bimeter n: a device to measure biting force that has a
central bearing plate of adjustable height.
biointegration n: a condition that occurs when ceramic implant materials are used and there is no space
(gap) between the bone and dental implant.