Articulators Flashcards
what are the 5 types of articulators?
hand held
simple hinge
plane line
average value
semi-adjustable - denar
what are the 3 anatomical guide planes?
incisal guidance
cuspal inclines
TMJ
What are mandibular movements guided by?
TMJ
teeth
what are simple casts used for?
static analysis of teeth:
orthodontic
wear
what are hand held casts used for?
analyse teeth in intercuspal position
assesses crowding, overbite, and overjet.
when is there limited use for hand held casts?
when insufficient reference teeth
whats the purpose of a simple hinge articulator?
holds casts together
a way of putting casts together reproducibly
describe the hinge of a plane line articular?
slightly anatomical but arbitrary
describe the average value articulator?
hinge axis nearer condylar hinge axis
average condylar guidance angles
average excursive movements possible
what is an average value articulator used for?
simple fixed prostheses for teeth not involved in guidance
removable prostheses
what are the 2 types of semi-adjustable articulators?
dentatus articulator
denar mark II articulator
what is a non-Arcon articulator?
condyle part of maxillary component
what is an arcon articulator?
condyle part of mandibular component
what does a face bow assess?
relates occlusal plane of upper teeth to the ears (EAM)
how is a face bow set up?
cover bite fork with wax
push against max teeth
centre
patient hold
slide bow into fork until rods in the ears
