9/27 - Jaw Relation Records, Wide-Vue

Question 1

what is the purpose of muscle deprogramming

Answer 1

to reduce or relax muscle activity levels to eliminate muscle pain, tension, or discomfort.

Question 2

deprogramming allows for accurate examination of what

Answer 2

relationship of maxilla to mandible with muscles relaxed and condyles in fully seated position

Question 3

fixed prosth is a ___ procedure - meaning errors in any step affect the success of all subsequent procedures

Answer 3

SERIAL PROCEDURE

Question 4

what are the muscles of mastication

Answer 4

masseter, medial prterygoid, temporalis, lateral pterygoid

Question 5

function of masseter

Answer 5

• elevate mandible and approximate teeth
• intermediate and deep muscle retract mandible
• superficial fibers protrude mandible

Question 6

function of medial pterygoid

Answer 6

• assist w/ elevation and protrusion of mandible
• assist lateral pterygoid w/ side to side mandibular motion to help with food grinding

Question 7

function of temporalis

Answer 7

• anterior and mid fibers elevate the mandible
• posterior fibers retract the mandible

Question 8

function of lateral pterygoid

Answer 8

• sole muscle of mastication to cause depression of mandible
• assist with protrusion and side to side movement of mandible

Question 9

what are the parts of lateral pterygoid

Answer 9

upper and lower head

Question 10

what is the muscle the frequently prevents condylar seating

Answer 10

lateral pterygoid

Question 11

what is programmed to position the mandible to avoid pain and posterior interferences in the arc of closure

Answer 11

lateral pterygoid

Question 12

deprogramming generally is done by placing something in the anterior that eliminates ___

Answer 12

posterior occlusal contact

Question 13

how long to let adhesive for Clonebit set

Answer 13

five minutes

Question 14

why should you not wait too long for adhesive to set

Answer 14

waiting too long will allow adhesive to dry out and lose qualities

Question 15

what is used to reline the jig

Answer 15

clone bite (orange)

Question 16

what is the first scored line on the jig

Answer 16

centric occlusion or max intercuspation

Question 17

T/F: CR position involves teeth and is not joint related.

Answer 17

FALSE! CR is joint related; no teeth involved.

Question 18

what is the sceond score line on the jig, posterior to the first

Answer 18

CR

Question 19

what is the superior, anterior position of the condyles in the glenoid fossa with articular disc in between

Answer 19

CR record

Question 20

what PVS used for CR, protrusive, and bite fork records

Answer 20

Regisil (purple)

Question 21

what is used to set condylar inclination on articulator

Answer 21

protrusive registration

Question 22

how many mm of protrusive movement do we want to capture

Answer 22

4-7 mm (grady says just basically do 5)

Question 23

what happens if you capture more than 4-7 mm of protrusive movement

Answer 23

cause problem when setting the condylar inclination on semi-adjustable articulator

Question 24

what is the third line drawn/troughed anterior to the previous two lines

Answer 24

protrusive

Question 25

what is the purpose of the protrusive trough

Answer 25

allows patient to drop into protrusive while bite registration is curing

Question 26

what impression material has pleasant taste and odor, non-staining, inexpensive, but has poor tear strength

Answer 26

alginate - irreversible hydro

Question 27

why add rope wax around the periphery of the tray

Answer 27

1. accurately capture mucobuccal fold
2. increased comfort to the patient

Question 28

how many thickness of rope way in posterior of tray to prevent excess alginate from going down patient’s throat

Answer 28

2 thick

Question 29

immediately take impressions and pour within how many minutes

Answer 29

15 mintues

Question 30

condyles are positioned at ___ mm on articulator

Answer 30

110 mm

(this was the only thing worth asking that’s different on Wide-Vue powerpoint)

Question 31

bennet angle equation

Answer 31

Bennett angle for our Hanau articulator = H/8 + 12
H = eminence angle