Occlusion 4

Question 1

Posselt’s envelope of motion refers to the ______ range of motion of the _____

Answer 1

Extreme , mandible

Question 2

In the first 20 mm of opening and closing, the mandible _____ and does not _______
As the mandible continues to open, ____ of the ____ begins

Answer 2

Only rotates, translate (move down and forward )
Translation , Condyle

Question 3

When viewed from the frontal plane, the ____ movement of the mandible is called the ______

Answer 3

Translatory (medio-lateral), Mandibular Translation

Question 4

When the mandible moves to the left, the _____ on the left ______ and rotates while the ______ and ____ move forward, downward, and medially within the _______

Answer 4

Condyle, remains stationary
Right Condyle and disk ; articular fossa

Question 5

What position would the jaw be in if both mandibular Condyles and disc are forward in their glenoid fossa?

Answer 5

Protruded

Question 6

What is retrusive jaw movement?

Answer 6

Mand movement towards the posterior

Question 7

If a person has ideal occlusion, moving the ____ of mand anterior teeth against the ____ of max teeth (____) to reach the edge to edge relationship will cause protrusion

Answer 7

Incisal edges, palatal, (incisal guidance)

Question 8

What is anterior guidance?

Answer 8

When the mand moves into protrusive, the mand anterior teeth glide along the lingual surfaces of the max anterior teeth and disclude the posterior teeth

Question 9

The most protruded mand position may range from ___ to ___ mm, which is typically ______________

Answer 9

6-12
Well beyond the functional range of mastication

Question 10

The most retruded tooth contact position of the mandible is typically ______ to the position of the acquired MIP
This _______ is usually about __ mm away from the MIP

Answer 10

Posterior-inferior
Centric occlusion position
1 mm

Question 11

The working side is the ?
The working side Condyle is the Condyle on the ____ side

Answer 11

Side toward which the mandible moves in lateral excursion
Laterotrusive

Question 12

The non working side is the ?
What is another name for this side?

Answer 12

The side of the mandible that moves toward the medial line in a lateral excursion
Balancing side

Question 13

The exact pathway of he Condyle on the balancing side during mediotrusion is determined by the __________, _______, __________, and the _________

Answer 13

Shape of the medial wall & superior aspect of articular fossa
Medial pole of balancing Condyle
Congruency of articulating disc with the articulating surfaces
Tightness of the capsule
Ligaments

Question 14

Right working movement is the result of ______ around a ____ axis and the _____ of the left Condyle ____, ____, and _____

Answer 14

Rotation of the right Condyle, vertical
Translation
Down, forward, inward

Question 15

The Bennet angle is the

Answer 15

Angle between the midsagital plane and the curve of the non working Condyle

Question 16

The bennet movement or immediate side shift is

Answer 16

A minuscule lateral shift of the whole mandible

Question 17

The amount of translatory displacement (_____) of both condyles varies individually and depends on the _____

Answer 17

Side shift
Anatomical constraints specifics mentioned in other card

Question 18

What is group function?

Answer 18

Multiple contact relations between max and mand teeth in lateral movements on working side that distribute occlusal forces

Question 19

____________ is a form of mutually protected articulation in which the ________ and ____ overlap of the _____ disclude the posterior teeth in the excurisve movements of the mandible

Answer 19

Canine guidance
Vertical and horizontal , canine teeth

Question 20

What is mutually protected occlusion ?
What position is this preventing excessive contact in?

Answer 20

Posterior teeth prevent excessive contact of anterior teeth in MIP
MIP
Anterior teeth disengage the posterior teeth in all mandibular excurisve movement

Question 21

When does bilateral balanced occlusion occur?

Answer 21

When all posterior teeth contact on the working side and one or more teeth on the balancing side contact simulataneously

Question 22

When is bilateral balanced occlusion used?

Answer 22

Only in complete dentures (prevents tipping and becoming loose)
* very harmful for natural teeth because there should not be contact on non working side

Question 23

Shallow articular eminences require ____ cusps
What is this related to ?

Answer 23

Short
Condylar inclination

Question 24

Steep articular eminence allows for ___ cusps
What is this related to ?

Answer 24

Steep
Condylar inclination

Question 25

Increasing the ____ will permit lengthening of the cusp that would otherwise be shorter in the presence of pronounced ________ of the Condyles

Answer 25

Anterior guidance
Immediate lateral translation

Question 26

ADD CARDS BASED ON IMAGES WE TLAK ABOUT IN CLASS