Articulators

Question 1

mandibular movements are guided by what two things?

Answer 1

TMJ
tooth guidance

Question 2

the TMJ

? synovial joint: with articular surfaces covered in ? and joint space split by a ??
Capable of ?, ? and ? movements

Answer 2

Ginglymo-arthroidal
fibrocartilage
fibrous disc

hinge
rotating
sliding

Question 3

what kind of tooth guidance is used in Protrusive/retrusive movements?

Answer 3

incisal guidance
cuspal guidance

Question 4

what kind of tooth guidance is used in Lateral excursions?

Answer 4

canine guidance
group function

Question 5

what type of tooth guidance is this?

Answer 5

canine guidance

Question 6

what kind of tooth guidance is this?

Answer 6

group function

Question 7

name this articulator

Answer 7

simple hinge

Question 8

name this articulator

Answer 8

plane line

Question 9

name this articulator

Answer 9

average value

Question 10

name this articulator

Answer 10

semi-adjustable -> Denar

Question 11

what are handheld casts used for?

Answer 11

For simple study models where there is sufficient reference teeth

Question 12

what is the function of a simple hinge articulator?

Answer 12

to allow casts to be located to their recorded position tho not representative -> arbitary position

Question 13

is a plane line better than a simple hinge? why?

Answer 13

yes
hinge nearer anatomical location but still arbitary

Question 14

use of plane line articulator

Answer 14

simple restorations for teeth not involved in guidance and simple removable prosthesis

Question 15

is a average value articulator better than a plane line? why?

Answer 15

yes
allows protrusive and lateral movements

Question 16

is an average value articulator an arcon articulator?

Answer 16

no because articulator condyle part of the maxillary componen

Question 17

use of average value articulator

Answer 17

simple restorations for teeth not involved in guidance and removable prosthesis

Question 18

is a semi-adjustable articulator better than an average value articulator? why? 3

Answer 18

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)

Question 19

use of semi-adjustable articulator

Answer 19

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