• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/49

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

49 Cards in this Set

  • Front
  • Back
Pure rotation of the mandible involves which two planes of movement?
Frontal & Sagittal
What is the plane in which the mand. moves up and down?
Frontal
What is the plane in which the mand. moves side to side?
Horizontal
What is the plane in which the mand. moves Forwards and backwards?
Sagittal
What are the five factors of mandibular movement?
1. Initiating position (centric relation)
2. Types of motion
3. Direction of motion
4. Degree of movement
5. Clinical significance of movements
What is the most stable and most easily reproduced position?
Centric relation
What are the types of motion in mandibular movement?
Rotation and translation
What is another name for Centric occlusion
Intercuspal position
What is another name for Centric relation?
Terminal hinge axis
What is another name for rest position?
Postural position
What is the order of height generally for:
Centric Relation
Resting position and
Centric Occlusion
Centric Occlusion
Centric Relation
Resting Position
What is another name for the terminal hinge movement of the mandible?
Rotation
What movements primarily allow for food mastication?
Lateral contacting movements
Posselt's envelope of motion is viewed in what plane?
Mid-sagittal
Border movements of the mandible are recorded in what plane?
Horizontal
What is the contact of teeth during the resting or postural position?
Not present
What is the term used to describe the absence of contact during postural position?
Freeway space or interocclusal distance
(2-6 mm avg.)
Which jaw position is a muscle guided position?
Rest or postural position
What is defined as maximum intercuspation of the teeth and a tooth guided position?
Centric occlusion (Intercuspal Position)
What is the usual reflex cited as the basis for the postural position of the mandible?
Tonic Stretch reflex of the levators
What determines Centric relation?
Condyles are positioned in the uppermost part of the mandibular fossa and related anteriorly to the distal slope of the articular eminence
Guided movements of the jaw in opening and closing that do not have translation are referred to as what?
Hinge axis movements
What is considered to be a ligament guided position?
Centric Relation
When a mandibular movement to the right is performed, which condyle moves forward, downward, and medially?
Non-working condyle (left)
Lateral movement of the Mand. is known as what?
Transtrusion
The lateral movement of the working or rotating condyle
Laterotrusion
The medial movement of the balancing or nonworking condyle
Mediotrusion
In a lateral movement what is the motion of the balancing non-working condyle?
Downward, forward, and medially
What is the motion during a lateral movement for the working condyle?
lateral (rotation around a vertical axis and translating laterally)
Due to the mand. being solid bone, the amount that the non-working condyle moves medially determines how far the working condyle moves laterally. What is this known as?
Bennett Movement
The side that moves away from the midline and toward the lateral excursion is known as what?
Working side (laterotrusive)
The side that moves toward the midline during a laterotrusive movement is what?
Non-working side (mediotrusive0
Occurs frequently throughout the day and is an important function that rids the mouth of saliva and helps moisten the oral structures.
Empty Mouth Swallowing
Which muscles contract during normal swallowing?
Masseter muscles
Tooth contacts are of _____ _____ in swallowing than in chewing, but there is wide variation in frequency and duration from one person to another.
Longer Duration
During a working side movement of the mand. the oblique ridge of a max. first molar passes through which sulcus of a permanent mandibular first molar?
Distobuccal sulcus
In intercuspal position, the _____ _____ _____ of the max. first molar opposes the _____ _____ of the mand. first molar.
mesiobuccal triangular ridge
mesiobuccal groove
In a working side movement, the _____ _____ of the max. first molar passes through the _____ _____ of the mand. first molar.
mesiolingual cusp
lingual groove
In a working side movement, the _____ _____ of the max. secpnd molar passes through the _____ _____ of the mand. second molar.
mesiobuccal cusp
facial groove
What movement is accomplished when the mand. is moved straight forward until the max. and mand. incisors contact edge to edge?
Protrusive Movement
What is typical of the protrusive movement symmetry?
Bilaterally symmetrical
What teeth are most likely to fracture during protrusive movements?
Incisors (esp. restorations on those teeth)
What is the movement of the condyles during a protrusive movement?
Downward and forward
What occurs as the mand. moves from a pure protrusive movement from maximum intercuspal position to a maximum protruded position?
Translation
What is the movement of the condyles in a retrusive movement?
Backward and Up
If arrows indicating movements are straight and pointing buccally they are ...
Right working
If arrows indicating movements are straight and pointing lingually they are ...
Left Working
The side to which the mand. moves is known as the _____ _____.
Working Side
The side from which the Mand. is moving from is known as the _____ _____.
Non-working side