FAGD with pics
What is insertion and origin of muscles ? - answer insertion: bone where muscle
attaches to ..the bone that usually moves
Origin: stable bone where muscle originates from.
What is the action of the medial ptyergoid? - answer Elevates/closes the mandible,
aids in protrusion (same as masseter)
moves the jaw to it's side in side-side movements (same as masseter)
Acts like a sling with the masseter muscle.
What is the function of the lateral pterygoid? - answerAids in opening/depressing the
mandible
Protrudes the mandible
moves mandible to opposite side in side-side movements
What muscles are elevator muscles and help close the jaw during mastication? -
answerMasseter
Medial pterygoid
Temporalis
What muscles are depressor muscles and help open the jaw? - answerLateral pterygoid
Suprahyoid (digastric)
What are the two components to the masseter muscle? - answerSuperficial and deep
masseter
What is the origin and insertion of the Masseter muscle? - answerOrigin - the outer
surface of the zygoma
Insertion - Lower boarder of the ramus
What is the action of the masseter muscle? - answerElevation of mandible
aids in protrusion
moves mandible to it's side in side-side movements
There is also fibers that can help in retrusion but it's very minor
What are the three components of the temporalis muscle? - answerAnterior, Middle and
Posterior
What is the origin and insertion of the temporalis muscle? - answerOrigin - Temporal
fossa and lateral surface of the skull
Insertion - Coronoid process and anterior ascending ramus
,What is the action of the temporalis muscle? - answerelevates/closes
Retrusion of mandible
What is the origin and insertion of the medial pterygoid muscle? - answerOrigin -
pterygoid fossa
Insertion - medial surface of the mandibular angle
If a unilateral contractions happens of the medial pterygoid, what do you get? -
answerMedio-trusive movement (non-working side moves)
One condyle translates
while the other rotates (working side)
Balancing side movement
What are the two components of the lateral ptyergoid? - answerSuperior and Inferior
What is the origin and insertion of the SUPERIOR lateral ptyergoid? - answerOrigin -
Infratemporal surface of the greater wing of the sphenoid bone
Insertion - Medial portion of the articular disc (30-40%), Neck of the condyle
What is the origin and insertion of the INFERIOR lateral ptyergoid? - answerOrigin -
outer surface of lateral pterygoid plate
Insertion - neck of condyle
If you get a lateral ptyergoid spasm, which side of the mouth would you have an
interference? - answer•Discludes the dentition on the affected side (posterior)
•Causes premature contact of the anterior teeth on the contralateral side
What is the origin and insertion of the anterior belly of the 5uprahyoid digastric muscle?
- answer•Origin -lingual surface of mandible at the midline
•Insertion -intermediate tendon on hyoid bone
•Innervated by the 5th cranial nerve - 5 and S
What is the origin and insertion of the posterior belly of the suprahyoid digastric muscle?
- answer•Origin -mastoid notch
•Insertion -intermediate tendon on the hyoid bone
•Innervated by the 7th cranial nerve
What is the action of the suprahyoid digastric muscle? - answerAction
-depresses the mandible
-accessory opening muscle
Which biomechanic movement of the condyle is a "hinge" movement? Where does it
occur? - answerRotational movement
-occurs between the condyle and the disc
,Which biomechanic movement of the condyle is a "gliding" movement? Where does it
occur? - answerTranslational movement
- occurs between the disc and the fossa
If one joint is not translating, The mandible will deviate to the __________ side -
answeraffected
A slight translation in the horizontal plane of the "working side" of the condyle is known
as _________ movement. - answerBennett Movement
-Bodily shift of the mandible in the direction of the working condyle
- Just stating that when the jaw is moving right, the mandibular body of the left is is
moving over the horizontal plan.
In a left lateral movement, the right condyle moves ________ and the left condyle shifts
in a ________ _______ direction - answer- forward
- lateral posterior
In a left lateral movement, which side is the "working" side? - answerLeft
In a left lateral movement, which side is the "non-working" or "balancing side" -
answerRight
In para-function, you have Iso________ contractions. Which direction are the forces
applied? - answerMETRIC
Horizontal
In functional contractions, you have Iso________ contractions. Which direction are the
forces applied? - answerTONIC
Vertical
What is : "A stereotyped movement disorder characterized by rhythmic masticatory
muscle activity associated with tooth grinding and occasional tooth clenching" -
answerSleep Bruxism
The clinical examination for sleep bruxism diagnosis includes: - answer-abnormal tooth
wear (attrition, wear facets)
-masticatory muscle hypertrophy
- muscle tenderness
T/F. Bruxism is common in children. - answerTrue.
T/F. It is reported that occlusal adjustment will reduce bruxism to tolerable levels -
answerTrue
Less than 40 bruxism events per hour, is classified as (normal, mild, moderate or
severe?) - answerNormal
, 40-75 bruxism events per hour, is classified as (normal, mild, moderate or severe?) -
answerMild
75-124 bruxism events per hour, is classified as (normal, mild, moderate or severe?) -
answerModerate
125+ bruxism events per hour, is classified as (normal, mild, moderate or severe?) -
answerSevere
In SB patients, SB episodes occur at a frequency of ______ times per hour of sleep -
answer5.8
Centric occlusion (CO)
•Habitual occlusion
•Habitual Centric
•The most complete interdigitation of the teeth
These are all different ways of saying? - answerMIP
Centric Relation, also known as musculoskeletal stable position, is determined by? -
answer-joint anatomy
-muscles physiology
-disc position
What will the Anterior teeth do during Mutually Protected Occlusion? - answer-Anterior
teeth will disclude the posterior teeth during excursive movements of the mandible
-Anterior teeth will contact lightly during maximum intercuspation
Criteria for Optimal Occlusion, _____ loading of occlusal forces - answerAxial
Straight up and down
Traumatic occlusion, can cause hemorrhage and congestion in the __________ -
answerPDL
When doing occlusal adjustments for Working contacts, where do you adjust? -
answer•lingual incline of buccal cups
•facial(buccal) incline of lingual cusp
BULL, Buccal CUSP of upper teeth, Lingual CUSP of lower.
Its the Buccal CUSP of uppers and Lingual incline of the Buccal cusp for BU.
Lingual CUSP of the lowers and Buccal incline for Lower
When doing occlusal adjustments for non-working or balancing side interferences,
where do you adjust? - answer•Facial inclines of the lingual cusps of the maxillary teeth
•Lingual of the lower buccal cusps
What is insertion and origin of muscles ? - answer insertion: bone where muscle
attaches to ..the bone that usually moves
Origin: stable bone where muscle originates from.
What is the action of the medial ptyergoid? - answer Elevates/closes the mandible,
aids in protrusion (same as masseter)
moves the jaw to it's side in side-side movements (same as masseter)
Acts like a sling with the masseter muscle.
What is the function of the lateral pterygoid? - answerAids in opening/depressing the
mandible
Protrudes the mandible
moves mandible to opposite side in side-side movements
What muscles are elevator muscles and help close the jaw during mastication? -
answerMasseter
Medial pterygoid
Temporalis
What muscles are depressor muscles and help open the jaw? - answerLateral pterygoid
Suprahyoid (digastric)
What are the two components to the masseter muscle? - answerSuperficial and deep
masseter
What is the origin and insertion of the Masseter muscle? - answerOrigin - the outer
surface of the zygoma
Insertion - Lower boarder of the ramus
What is the action of the masseter muscle? - answerElevation of mandible
aids in protrusion
moves mandible to it's side in side-side movements
There is also fibers that can help in retrusion but it's very minor
What are the three components of the temporalis muscle? - answerAnterior, Middle and
Posterior
What is the origin and insertion of the temporalis muscle? - answerOrigin - Temporal
fossa and lateral surface of the skull
Insertion - Coronoid process and anterior ascending ramus
,What is the action of the temporalis muscle? - answerelevates/closes
Retrusion of mandible
What is the origin and insertion of the medial pterygoid muscle? - answerOrigin -
pterygoid fossa
Insertion - medial surface of the mandibular angle
If a unilateral contractions happens of the medial pterygoid, what do you get? -
answerMedio-trusive movement (non-working side moves)
One condyle translates
while the other rotates (working side)
Balancing side movement
What are the two components of the lateral ptyergoid? - answerSuperior and Inferior
What is the origin and insertion of the SUPERIOR lateral ptyergoid? - answerOrigin -
Infratemporal surface of the greater wing of the sphenoid bone
Insertion - Medial portion of the articular disc (30-40%), Neck of the condyle
What is the origin and insertion of the INFERIOR lateral ptyergoid? - answerOrigin -
outer surface of lateral pterygoid plate
Insertion - neck of condyle
If you get a lateral ptyergoid spasm, which side of the mouth would you have an
interference? - answer•Discludes the dentition on the affected side (posterior)
•Causes premature contact of the anterior teeth on the contralateral side
What is the origin and insertion of the anterior belly of the 5uprahyoid digastric muscle?
- answer•Origin -lingual surface of mandible at the midline
•Insertion -intermediate tendon on hyoid bone
•Innervated by the 5th cranial nerve - 5 and S
What is the origin and insertion of the posterior belly of the suprahyoid digastric muscle?
- answer•Origin -mastoid notch
•Insertion -intermediate tendon on the hyoid bone
•Innervated by the 7th cranial nerve
What is the action of the suprahyoid digastric muscle? - answerAction
-depresses the mandible
-accessory opening muscle
Which biomechanic movement of the condyle is a "hinge" movement? Where does it
occur? - answerRotational movement
-occurs between the condyle and the disc
,Which biomechanic movement of the condyle is a "gliding" movement? Where does it
occur? - answerTranslational movement
- occurs between the disc and the fossa
If one joint is not translating, The mandible will deviate to the __________ side -
answeraffected
A slight translation in the horizontal plane of the "working side" of the condyle is known
as _________ movement. - answerBennett Movement
-Bodily shift of the mandible in the direction of the working condyle
- Just stating that when the jaw is moving right, the mandibular body of the left is is
moving over the horizontal plan.
In a left lateral movement, the right condyle moves ________ and the left condyle shifts
in a ________ _______ direction - answer- forward
- lateral posterior
In a left lateral movement, which side is the "working" side? - answerLeft
In a left lateral movement, which side is the "non-working" or "balancing side" -
answerRight
In para-function, you have Iso________ contractions. Which direction are the forces
applied? - answerMETRIC
Horizontal
In functional contractions, you have Iso________ contractions. Which direction are the
forces applied? - answerTONIC
Vertical
What is : "A stereotyped movement disorder characterized by rhythmic masticatory
muscle activity associated with tooth grinding and occasional tooth clenching" -
answerSleep Bruxism
The clinical examination for sleep bruxism diagnosis includes: - answer-abnormal tooth
wear (attrition, wear facets)
-masticatory muscle hypertrophy
- muscle tenderness
T/F. Bruxism is common in children. - answerTrue.
T/F. It is reported that occlusal adjustment will reduce bruxism to tolerable levels -
answerTrue
Less than 40 bruxism events per hour, is classified as (normal, mild, moderate or
severe?) - answerNormal
, 40-75 bruxism events per hour, is classified as (normal, mild, moderate or severe?) -
answerMild
75-124 bruxism events per hour, is classified as (normal, mild, moderate or severe?) -
answerModerate
125+ bruxism events per hour, is classified as (normal, mild, moderate or severe?) -
answerSevere
In SB patients, SB episodes occur at a frequency of ______ times per hour of sleep -
answer5.8
Centric occlusion (CO)
•Habitual occlusion
•Habitual Centric
•The most complete interdigitation of the teeth
These are all different ways of saying? - answerMIP
Centric Relation, also known as musculoskeletal stable position, is determined by? -
answer-joint anatomy
-muscles physiology
-disc position
What will the Anterior teeth do during Mutually Protected Occlusion? - answer-Anterior
teeth will disclude the posterior teeth during excursive movements of the mandible
-Anterior teeth will contact lightly during maximum intercuspation
Criteria for Optimal Occlusion, _____ loading of occlusal forces - answerAxial
Straight up and down
Traumatic occlusion, can cause hemorrhage and congestion in the __________ -
answerPDL
When doing occlusal adjustments for Working contacts, where do you adjust? -
answer•lingual incline of buccal cups
•facial(buccal) incline of lingual cusp
BULL, Buccal CUSP of upper teeth, Lingual CUSP of lower.
Its the Buccal CUSP of uppers and Lingual incline of the Buccal cusp for BU.
Lingual CUSP of the lowers and Buccal incline for Lower
When doing occlusal adjustments for non-working or balancing side interferences,
where do you adjust? - answer•Facial inclines of the lingual cusps of the maxillary teeth
•Lingual of the lower buccal cusps
