Articulators Flashcards
Class 1 Articulator alt name/classification
non-adjustable
Movement of class 1 articulator
vertical only
Adjustments of class 1 articulator
none
What is class 1 articulator used for
occlusal contact position which is the maximum intercuspal position
Articulator definition
a mechanical device for mounting a patients dental arch casts to perform dental procedures w/o the patient needing to be present
Class 2 articulator alt name
Non-adjustable
Movements of Class 2 articulator
vertical and horizontal-NOT TMJ
Cons of class 2 articulator
Time adjusting restoration performed due to inaccurate eccentric movements causing poor anatomic form/occlusal relationships
Main use of Class 2 articulator
For single crown preps-these are the most used one for this
Class 3 Classification/name
Semi-adjustable
Movements allowed of class 3 articulator
condylar pathways via averages for all parts of motion; arcon and non-arcon
Define arcon. Why is this applicable to our class?
Arcon means it has condylar elements on the lower member and condylar guidance on the upper
Adjustments the Class 3 articulator allows for
Condylar inclination
Lateral translation also known as Bennet Angle and side shift
Condylar distance
Class 4 articulator is also known as
fully adjustable
Motion of Class 4 articulator
3D Dynamic registration
Possible adjustments for Class 4 articulator (how many)
14
What is special about a class 4 articulator
it allows for orientation of the casts to the TMJ and stimulation of mandibular movements
Centric lock closed
when this is closed the articulator only moves up and down (hinging)
Centric lock open
lateral and forward movements possible
Condylar inclination aka
horizontal condylar inclination
What does the condylar inclination represent
the shape and steepness of the articular eminence
Lower member of the articulator represents what
the mandible-provides attachment for lower cast
Upper member of the articulator represents what
represents the maxilla; provides attachment for upper cast
incisal pin
represents the incisal edges of the lower anterior teeth
mechanical table
represents the lingual of the upper ant teeth
Is the denar 330 arcon or non-arcon?
Arcon: it has condylar elements on the lower membrane and condylar guidance on the upper
What is the adjustability of the denar 330
semi-adjustable: allows some adjustments to make condylar movement more similar to patient so that the tooth contacts patterns duplicate these in the patient
Condylar distance of denar 330 is fixed at what
110mm
Condylar balls
Fit in condylar housing and represent the condyles of the TMJ
Settings for the denar 330
Condylar inclination at 30
Bennet angle at 15
Immediate side shift is at 0
