9/27 - Jaw Relation Records, Wide-Vue Flashcards

1
Q

what is the purpose of muscle deprogramming

A

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

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2
Q

deprogramming allows for accurate examination of what

A

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

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3
Q

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

A

SERIAL PROCEDURE

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4
Q

what are the muscles of mastication

A

masseter, medial prterygoid, temporalis, lateral pterygoid

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5
Q

function of masseter

A
  • elevate mandible and approximate teeth
  • intermediate and deep muscle retract mandible
  • superficial fibers protrude mandible
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6
Q

function of medial pterygoid

A
  • assist w/ elevation and protrusion of mandible
  • assist lateral pterygoid w/ side to side mandibular motion to help with food grinding
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7
Q

function of temporalis

A
  • anterior and mid fibers elevate the mandible
  • posterior fibers retract the mandible
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8
Q

function of lateral pterygoid

A
  • sole muscle of mastication to cause depression of mandible
  • assist with protrusion and side to side movement of mandible
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9
Q

what are the parts of lateral pterygoid

A

upper and lower head

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10
Q

what is the muscle the frequently prevents condylar seating

A

lateral pterygoid

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11
Q

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

A

lateral pterygoid

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12
Q

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

A

posterior occlusal contact

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13
Q

how long to let adhesive for Clonebit set

A

five minutes

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14
Q

why should you not wait too long for adhesive to set

A

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

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15
Q

what is used to reline the jig

A

clone bite (orange)

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16
Q

what is the first scored line on the jig

A

centric occlusion or max intercuspation

17
Q

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

A

FALSE! CR is joint related; no teeth involved.

18
Q

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

19
Q

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

20
Q

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

A

Regisil (purple)

21
Q

what is used to set condylar inclination on articulator

A

protrusive registration

22
Q

how many mm of protrusive movement do we want to capture

A

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

23
Q

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

A

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

24
Q

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

A

protrusive

25
what is the purpose of the protrusive trough
allows patient to drop into protrusive while bite registration is curing
26
what impression material has pleasant taste and odor, non-staining, inexpensive, but has poor tear strength
alginate - irreversible hydro
27
why add rope wax around the periphery of the tray
1. accurately capture mucobuccal fold 2. increased comfort to the patient
28
how many thickness of rope way in posterior of tray to prevent excess alginate from going down patient's throat
2 thick
29
immediately take impressions and pour within how many minutes
15 mintues
30
condyles are positioned at ___ mm on articulator
110 mm (this was the only thing worth asking that's different on Wide-Vue powerpoint)
31
bennet angle equation
Bennett angle for our Hanau articulator = H/8 + 12 H = eminence angle