2016 Glossary - 3
veolar ridge external contour in preparation for prosthetic rehabilitation.
alveolus (pl, alveoli) n: the socket or cavity in the alveolar bone of the jaws that supports a natural tooth.
amorphous adj: having no rigid shape or organized
amputate v: the intentional surgical removal of diseased tissue; relating to dentistry may be amputating a root from a multirooted tooth or the removal
of a portion of a root.
anachoresis n: a process through which circulating
bacteria, pigments, metallic substances, foreign proteins, and other materials are fixated to areas of inflammation.
analgesia n: decreased ability to sense pain without
the loss of consciousness.
analog (analogue) n: in dentistry, an implant-related
device or part that is equivalent to or replicates a segment of an implant body or abutment. Typically, it is
made of brass, aluminum, steel, or plastic and is used
in the fabrication of the dental prosthesis.
anamnesis n: patient's recollection of their past medical history.
anaphoresis n: in electrophoresis, it is the movement
of anions (negatively charged particles) in a solution
or suspension toward the anode.
anatomic crown n: the segment of a natural tooth that
is superior to the cement-enamel junction.
anatomic landmark n: a significant anatomic structure
that is used as a reference point or orientation guide.
anatomic occlusion n: prosthetic tooth (teeth) with
an occlusal surface design that mimics the anatomic
form of natural teeth.
anatomic teeth n: prosthetic teeth that mimic the anatomic form of the corresponding natural teeth. The
teeth have either a modified occlusal form with cusp
inclines that are ≤20° or an occlusal form with 30° to
45° usage cusps.
ANB angle n: the angle formed by the anatomic landmarks nasion A line and nasion B line. The lines and
angle are determined with a cephalometric analysis.
anchorage area n: an anatomic surface that may provide retention for an oral prosthesis.
anchorage component n: a part or device that provides resistance to an imparted force.
ancillary prosthesis n: a prosthesis that aids in treatment and is intended for short-term or special usage.
It is not the definitive prosthesis.
angled abutment n: a dental implant abutment that
diverges away from the long axis of the implant fixture.
Angle's classification of malocclusion n: a categorization of malocclusions according to the anteroposterior relationship of the dental arches:
* Class I malocclusion (neutrocclusion): characterized by a normal relationship between the
dental arches where the mesiobuccal cusp of the
maxillary first permanent molar occludes into the
buccal groove of the mandibular first permanent
molar. A Class I malocclusion is presented as an internal derangement (eg, crowding) in one of the
* Class II malocclusion (distocclusion): characterized by an interarch relationship where the mandibular dental arch is positioned posterior to the
maxillary arch. The mandibular first molar is distal
to the position seen in neutrocclusion.
* Class II, Division 1 malocclusion: the maxillary
incisor teeth are in labioversion.
* Class II, Division 2 malocclusion: the maxillary
central incisors are in linguoversion.
* Class III malocclusion (mesiocclusion): the mandibular dental arch is positioned anterior to the
maxillary arch. The mandibular first molar is located mesial to the position seen in neutrocclusion.
angular cheilitis n: an inflammation characterized
by redness and fissures at the commissures of the
mouth (aka perleche).
ankyloglossia n: a severe restriction of tongue movement as a result of shortness or adhesion of the
tongue frenulum to alveolar ridge or the mucosa on
the floor of the mouth.
ankylosis n: immobility, fixation, and/or joining of a
bony joint or joining of tooth to bone because of an
injury, disease, or surgical procedure.