Articulators Flashcards
mandibular movements are guided by what two things?
TMJ
tooth guidance
the TMJ
? synovial joint: with articular surfaces covered in ? and joint space split by a ??
Capable of ?, ? and ? movements
Ginglymo-arthroidal
fibrocartilage
fibrous disc
hinge
rotating
sliding
what kind of tooth guidance is used in Protrusive/retrusive movements?
incisal guidance
cuspal guidance
what kind of tooth guidance is used in Lateral excursions?
canine guidance
group function
what type of tooth guidance is this?
canine guidance
what kind of tooth guidance is this?
group function
name this articulator
simple hinge
name this articulator
plane line
name this articulator
average value
name this articulator
semi-adjustable -> Denar
what are handheld casts used for?
For simple study models where there is sufficient reference teeth
what is the function of a simple hinge articulator?
to allow casts to be located to their recorded position tho not representative -> arbitary position
is a plane line better than a simple hinge? why?
yes
hinge nearer anatomical location but still arbitary
use of plane line articulator
simple restorations for teeth not involved in guidance and simple removable prosthesis
is a average value articulator better than a plane line? why?
yes
allows protrusive and lateral movements
is an average value articulator an arcon articulator?
no because articulator condyle part of the maxillary componen
use of average value articulator
simple restorations for teeth not involved in guidance and removable prosthesis
is a semi-adjustable articulator better than an average value articulator? why? 3
yes
Facebow used to locate hinge to condylar hinge using EAM as reference
Can programme condylar guidance angles
Arcon articulator (articulator condyle part of the mandibular component)
use of semi-adjustable articulator
Use semi-adjustable articulators for complex restorations particularly if restored teeth are involved in guidance
If reorganising rather than conforming to an occlusal scheme e.g. changing OVD in wear case
May results in less chair side adjustment of restorations
