Exam 1-TMJ, M of M's, Static, Working Occ Flashcards by Austin Shackelford

the TemproMandibular Ligament: ________ portion limits the normal rotational opening movement.

OOP= Outer Oblique Portion

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the TemproMandibular Ligament: _______ portion limits posterior movement of condyle & disc.

IHP=Inner Horizontal Portion

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Describing Mandibular Position in Centric Relation: A condylar position, and does not need any ______ contact to be obtained.

Tooth (we aint talkin bout M.I. here)

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Describing Mandibular Position in Centric Relation: Establishes the position of the condyle in a _______ and ______ location with the disc properly interposed between the condyle and the _______ bone.

SUPERIOR and ANTERIOR….temporal bone

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Describing Mandibular Position in Centric Relation: Articulation on the _____ portion of the articular disc.

thin

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Describing Mandibular Position in Centric Relation: Centric relation is described as the most ______ position of the condyle.

STABLE

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Describing Mandibular Position in Centric Relation: A positon of the mandible where the musculature displays minimal _______.

TONUS

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Clinical Conditions of Maximal Intercuspation: _____ determine the occlusial position!

TEETH!

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Clinical Conditions of Maximal Intercuspation: If centric relation and maximum intercuspation do NOT coincide, the patient will have a “______”

“slide”

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Clinical Conditions of Maximal Intercuspation: Most patients have some degree of a _____ from centric relation into maximum intercuspation (it is approx ___-___mm in length)

slide….1-2mm

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Clinical Conditions of Maximal Intercuspation: Maximum intercuspation is ________ contact of all the teeth and is the “______” of the slide.

simultaneous….”endpoint”

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Clinical Conditions of Maximal Intercuspation: All occlusial forces should be concentrated down the _______ of ______ teeth.

long axis…posterior

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Clinical Conditions of Maximal Intercuspation: The maximum intercuspation position is _______ in nature and will change throughout a patient’s life.

DYNAMIC

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ACTIONS OF THE TEMPORALIS–> _______ the mandible in a superior direction to eventually contact the maxillary teeth. (normal fxn)

Elevate

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ACTIONS OF THE TEMPORALIS–> _______ the mandible to help seat the condyles into the _______ fossa. (normal fxn)

Retracts (or retrudes)….mandibular (or glenoid:)) fossa

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ACTIONS OF THE TEMPORALIS–> Postitions the mandible to obtain ________!!! (normal fxn)

CENTRIC RELATION!!!

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ACTIONS OF THE TEMPORALIS–> What is the ONLY paranormal function?

CLENCHING when the muscle is overused

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ACTIONS OF THE TEMPORALIS–> what is it not “normally involved” with, but is not considered paranormal fxn?

lateral movement of the mandible

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When speakin’ bout the Medial Pole of the Condyle and the Medial Pterygoid muscle……This relationship on one side establishes the _______ position of the mandible at centric relation.

MID-MOST

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When speakin’ bout the Medial Pole of the Condyle and the Medial Pterygoid muscle……The normal _____ of occlusion is possible because the interaction of the medial pole of the condyle with the steep medial _____ of the fossa prevents the mandibular posterior teeth from moving straight ________ towards the midline.

curve….wall…horizontally

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When speakin’ bout the Medial Pole of the Condyle and the Medial Pterygoid muscle……In ideal Pt’s mandibular lateral translation is _______ from the fully seated positions of the condyle in the fossa.

IMPOSSIBLE!

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tha Lateral Pterry-Sup Domepiece: it maintains a sustainable and consistent position of the ________ (normal fxn)

Articular Disc

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tha Lateral Pterry-Sup Domepiece: it is progressively active during ______ movement of the mandible (normal fxn)

closing

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tha Lateral Pterry-Sup Domepiece: Frequently displays a _______ as a result of some types of occlusial dysfunction. (parafxn)

SPASM

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tha Lateral Pterry-Sup Domepiece: A SPASM of this muscle will result in the articular disc being pulled _______ out of the the glenoid fossa

Anteriorly

tha Lateral Pterry-Sup Domepiece: this muscle works in concert with the action and inaction of the _______.

Inferior head of the lateral pterygoid

tha Lateral Pterry-Sup Domepiece: is DEEP in placement and mostly covered by the ________....CAN the clinician palpate this bad boy??

covered by the medial pterygoid....YES, the clinician can palpate some portion of the muscle (unlike the inferior head, which cannot be palpated)

THE MYLOHYOID: slightly ________ the mandible.

depresses

THE MYLOHYOID: _______ the hyoid, the flood of the oral cavity, and the tongue.

ELEVATES

THE MYLOHYOID: is VERY important during _______ and ______.

speaking and swallowing

Normal Jaw Opening----LATE: The inferior head of the lateral pterygoid is at _________ point of _______...WHAT are the 4 ligaments that prevents any further movement?

Maximum point of contraction.....1.TemproMandibular 2.StyloMandibular 3.spenomanfibular 4.Capsular

Normal Jaw Opening----LATE: the CONDYLE has moved as far to the _____ as it can possibly move and is now located at the ______ border of the slope of the _______.

anterior..inferior...articular eminence

Normal Jaw Opening----LATE: the articular disc has rotated _______ over the ______ portion of the head of the condyle...The Superior Head of the Lat Ptery is in _______ holding the articular disc over ________.

posteriorly...posterior....max contraction...the head of the condyle

Normal Jaw Opening----LATE: the superior _______ tissues are in maximum taughtness and cannot further hold the articular disc in position over the head of the condyle without either stretching or tearing.

retrodiscal

Normal Jaw Opening----LATE: the _______ portion of the collateral ligament is lacking in tautness, while the ______ portion is taut.

posterior....anterior

Muscle Vectors in a frontal plane: Anterior, middle, and posterior Temporalis: (1)

Superior

Muscle Vectors in a frontal plane: Masseter (1)

Superior

Muscle Vectors in a frontal plane: Medial Pterygoid (2)

Superior and slightly Medial (mediotrusive)

Muscle Vectors in a frontal plane: inferior head of lateral pterygoid (2)

Anterior and Medial (slightly mediotrusive)

Innvervation and Vascularization of the TMJ: Like all joints in the body, its innvervated my its motor and sensory nerve to the muscles around it which is _______

Trigeminal (V)

Innvervation and Vascularization of the TMJ: most of the innvervation (___%) is the _________ nerve.

75% AuriculoTemporal nerve

Innvervation and Vascularization of the TMJ: Additional sensory innervation (25%) is the ________ and the ______ nerves branching from the ________ (__).

deep temporal.....masseteric....Trigeminal (V3)

Innvervation and Vascularization of the TMJ: PRIMARY vascularization is with the ________ branch of the _______ artery.

superficial temporal branch of the external carotid artery

Innvervation and Vascularization of the TMJ: The condyle receives vascular supply through its marrow spaces from the ________ artery.

inferior alveolar artery

50 Shades of Gray: Maxillary DOMINATING the Mandible::The maxillary arch is ______ than the mandible from the distal of the 3rd molar on one side through the middle of each tooth to the 3rd molar side.

LARGER

50 Shades of Gray: Maxillary DOMINATING the Mandible:: The maxillary arch is _____ or larger in measurement from right to left sides.

WIDER

50 Shades of Gray: Maxillary DOMINATING the Mandible:: ______ are embedded more in the max because the smile line is evident.

Estheics

What are the only two teeth that only occlude with one other tooth on proper occlusion?

Man Cent Incisor & Max 3rd Molar

the Plain, uh I mean, PLANE of Occlusion: The ideal plane is NOT ______.

FLAT

the Plain, uh I mean, PLANE of Occlusion: A flat plane allows for too many ______ on posterior teeth on both sides of the mouth.

contacts

the Plain, uh I mean, PLANE of Occlusion: The proper plane of occlusion will permit _______ functional contacts that occur in controlled areas.

simultaneous

the Plain, uh I mean, PLANE of Occlusion: a _______ plane permits maximum use of tooth contacts during function.

curved

the Plain, uh I mean, PLANE of Occlusion: the teeth are strategically positioned in the arches at ______ and ______ degrees of inclination.

varied and coordinated

Occlusal Forces on Post Teeth: the forces exerted on the first premolars are approximately ___% less then those exerted on the 3rd molars.

50%!!

Occlusal Relationship of Post Teeth: Occlusal contacts should ideally occur between a _______ and the depth of a _____, or between a ______ and a _____ surface, which is considered more stable (compared to cusp/incline).

cusp tip....fossa....cusp tip....flat surface

Occlusal Relationship of Post Teeth: Contacts should not occur on cuspal ______, they are less stable.

inclines

Class II Malocclusion aka "_____ occlusion". In layman's terms its called an "________"

"distal occlusion"... "Overbite"

Which teeth do we look at when determining the classes of occlusion/malocclusion?

the first molars and the canines

In static occlusion, occlusal contacts SHOULD occur between cusp tip and ______. this is also called "

the depth of an opposing fossa... "cusp-fossa occlusion"-->crazy name I know

WOOO! Max Posterior Cusp-Fossa/MargRidge LOCATIONS!!! Lingual Cusp of Max 2nd PM = (2)

Distal marginal ridge OR distal fossa of the mandibular 2nd PM

WOOO! Max Posterior Cusp-Fossa/MargRidge LOCATIONS!!! Lingual Cusp of the Maxillary 1st PM = (2)

Distal Marginal Ridge OR Distal fossa of the mandibular 1st PM

WOOO! Max Posterior Cusp-Fossa/MargRidge LOCATIONS!!! ML cusp of the Max 1st Molar = (1)

Central Fossa of Mand 1st Molar!

WOOO! Max Posterior Cusp-Fossa/MargRidge LOCATIONS!!! DL cusp of the Max 1st molar = (2)

distal marginal ridge OR distal fossa of the mandibular 1st molar

WOOO! Max Posterior Cusp-Fossa/MargRidge LOCATIONS!!! ML cusp of Max 2nd Molar = (1)

central fossa of mand 2nd molar

WOOO! Max Posterior Cusp-Fossa/MargRidge LOCATIONS!!! DL cusp of max 2nd molar = (2)

distal marginal ridge OR distal fossa of the mandibular 2nd molar

What is extensive and persistent M.I. occlusal contacts on inclines that can lead to mobility, excessive wear, fractures, and other signs and symptoms of occlusal disease?

BRUXISM

During Right lateral movement, the left (opposite) side is termed the "______" side.

"non-working"

When looking at a pathway of the max cusp positioned over the mandibular teeth, what pathway is parallel to the lingual groove and travels toward the tongue?

the WORKING pathway

Fxn/NonFxn Pathways of the Max cusps positioned over the Mandibular teeth: Notice the ________ area is LARGER then the _______ area.

Non-functional....functional

Fxn/NonFxn Pathways of the Max cusps positioned over the Mandibular teeth: the _________ pathway is all of the potential area that the mandible can move into

functional

Fxn/NonFxn Pathways of the Max cusps positioned over the Mandibular teeth: the _________ pathway is the area that the mandible cannot normally move into.

non-functional

Fxn/NonFxn Pathways of the Max cusps positioned over the Mandibular teeth: the arrow from the central fossa of the man 1st molar pointing to the lingual is the _______ path.

working

Centric Cusps escaping/moving during lateral movements: When looking at the LEFT max left 1st molar if the mesial marginal ridge/mesial fossa contact point with the MF cusp of the man 1st molar::: DURING NON-working movements will move across the ________ diagonally through the _______ between the _____ molar and the ___ P.M.

mesial marginal ridge....lingual embrasure of the 1st molar and 2nd PM

What type of mandibular movement is indicated in a MOVING OCCLUSION DIAGRAM that displays a large bold arrow emanating from the central fossa of a permanent max 1st molar traveling out the facial groove?

Working or LateroTrusive

What type of mandibular movement is indicated in a MOVING OCCLUSION DIAGRAM with a large bold arrow from the distal fossa on a Perm Max 1st molar traveling diagonally and posterior over the DL cusp toward the lingual?

Non-functional (CAN'T move the mandible that way dawg!)

What are the four points on BORDER movements/Saggittal Plane diagram that exhibit contact??

1.Centric Relation 2.Maximum Intercuspation 3.Edge-To-Edge 4.Maximum Protrusion

What is the most ANTERIOR point on the BORDER movements/Horizontal Plane diagram??

Maximum Protrusion

When looking at mandibular movement traced at the condylar level (horizontal view), the LONG, SLOPING side of the arch that travels MedioTrusively & Anteriorly is called the _______.

"Non-working Condylar Pathway"

Mandibular Lateral Translation is also called _______ movement and _______ side shift.

Bennett Movement...Immediate Side shift

Mandibular lateral translation/Bennett/Immediate: the ______ part of lateral movement, when the medial pole of the _______ condyle starts to travel down the slope of the articular eminence against the medial wall of the fossa.

FIRST part...non-working condyle

Mandibular lateral translation/Bennett/Immediate: it is exhibited as a measurement of the distance between the medial ____ of the non-working condyle and the medial ____ of the glenoid fossa.

pole...wall

If the Condylar Guidance was the only vertical Determiniant of Occlusion, the CUSP angles would need to be _____ than the angle of the ARTICULAR EMINENCE in order to avoid ______ in eccentric movements.

LESS...collisions

Significance of the medial wall on the Non-Working condyle: There is a significance regarding the distance between the medial pole of the condyle and the medial wall of the fossa..the looser the TMLigament/bigger the gap, the ______ cusp heights will be on the NON-working side.

SHORTER

Anterior Guidance effect on cusp height: Anterior Guidance is a function of the relationship between the maxillary and mandibular _______ teeth.

ANTERIOR teeth (haha, REALLY?)

Anterior Guidance effect on cusp height: Anterior Guidance consists of the _______ and _______ overlaps as measured at the anterior teeth.

vertical and horizontal

Changing Horizontal and/or Verticle overlap: with vertical overlap changes, what happens to the horizontal overlap?

it stays the same!

Changing Horizontal and/or Verticle overlap: As the amount of Verticle overlap _______, the anterior guidance angle ALSO _____.

increases....increases

Since Posterior Controlling Factors AND Anterior Controlling Factors are causing the mandible to move horizontally and vertically at the same rate, every point on the mandible (teeth) is also moving away from the horizontal reference plane at the ______ rate.

SAME (sorry, weird slide)

As the plane of occlusion becomes more nearly parallel to the angle of the articular eminence, the posterior cusps will need to be ________ in order to avoid collisions with each other.

shorter! (think small angle (20 deg) means grinding during opening!)

The less parallel the horizontal reference plane is to the Condylar Guidance Angle, the ______ the cusps can be.

Steeper

If you have an ________ side shift present, the cusps on the _______ side must be shorter.

immediate side shift...non-working side (both working and non-working, but non-working is more so)

________ determinants influence the direction and location of ridges and grooves on the occlusial surfaces.

HORIZONTAL

During eccentric movements, cusps pass between ridges and over grooves. As a result, the horizontal determinants also influence _______ of cusps.

placement

The closer the tooth is to the midline, the ______ the angle between the laterotrusive and mediotrusive pathways.

smaller

The more _________ the movement of the working condyle, the larger is the angle formed by the mediotrusive and laterotrusive pathways.

postero-lateral

Vertical Derterminants of Occlusial Morphology-Effect on cusp height and fossa depth: FACTOR: Plane of Occlusion, CONDITION: More parallel the plane to condylar guidance, EFFECT:________.

the SHORTER the posterior cusps MUST be