Articulator Handout

Question 1

Class I Articulator

Answer 1

Vertical motion

MIP

Question 2

Class II Articulator

Answer 2

Horizontal and vertical,
Does not orient the motion to the temporomandibular joints
Must adjust restoration intraorally b/c inaccurate eccentric mvmt

Question 3

Class III Articulator

Answer 3

Simulates condylar pathways

Aka “Semiadjustable articulator”

Question 4

Acron Articulator

Answer 4

condylar elements on the lower member and the condylar guidance on the upper member

Question 5

What can Class III adjust?

Answer 5

condylar inclination
lateral translation movmement (bennet angle and immediate side shift)
condylar distance

Question 6

Centric lock closed

Answer 6

Closed: articular can only hinge
Open: lateral and forward movements of the articulator

Question 7

Condylar housing

Answer 7

represents the fossa of the TMJ

Question 8

Condylar inclination

Answer 8

shape and steepness of articular eminence

aka “horizontal condylar inclination”

Question 9

Lower member

Answer 9

reps mandible

Question 10

Upper member

Answer 10

reps maxilla

Question 11

Incisal pin

Answer 11

reps the incisal edge of the lower ant. teeth

Question 12

mechanical table

Answer 12

reps the lingual surface of the upper ant teeth

Question 13

condylar balls

Answer 13

fit into the condylar housing and rep the condyles of the tmj

Question 14

settings

Answer 14

condylar inclination = 30
bennet angle = 15
immediate side shift =0