Exam 1 Flashcards
The outer oblique portion of the Tempromandibuler ligament limits…
Rotational opening moments
The inner horizontal portion of the inner horizontal portion of the Tempromandibular ligaments limits…
Posterior movement of condyle and disc
All eccentric movements are guided by…
Anterior teeth
In ideal occlusion What shouldn’t be seen
No crossover, contacts on posterior teeth should be seen.
Describe class 2 malocclusion…
Distally, positioned first molar and canine relationships.
Mandible translated distally in relation to maxima
Describe class 3 malocclusion…
Mesially positioned mandibular first molar and canine.
Mandible translated Mesially
Think of Centric holding cusps on the mandibular posterior teeth.
What contacts with the facial cusp of the mandibular second premolar?
Mesial marginal ridge (MMR) of the maxillary second premolar.
Think of Centric holding cusps on the mandibular posterior teeth.
What contacts with the mesiofacial cusp of the mandibular first molar?
Mesial Marginal Ridge (MMR) of the maxillary first molar.
Think of Centric holding cusps on the maxillary posterior teeth.
Mesiolingual cusps of the maxillary first molar contact…
central fossa on the mandibular first molar
Think of Centric holding cusps on the maxillary posterior teeth.
Mesiolingual cusps of the maxillary second molar contact…
central fossa on the mandibular second molar
Think of non-centric cusps on the mandibular posterior teeth.
Mesiolingual cusp of the mandibular first molar passes through the…
Lingual embrasure between the maxillary second premolar and first molar.
Think of non-centric cusps on the mandibular posterior teeth.
Mesiolingual cusp of the mandibular second molar passes through the…
Lingual embrasure between the maxillary first and second molars.
Think of non-centric cusps on the maxillary posterior teeth.
Mesiofacial cusp of the maxillary first molar inserts into…
Mesio facial groove of the mandibular first molar.
Think of non-centric cusps on the maxillary posterior teeth.
Mesiofacial cusp of the maxillary second molar inserts into…
Facial groove of the mandibular second molar.
The posterior teeth protect the anterior teeth in?
Protect anterior in maximum intercuspation.
The anterior teeth protect the posterior teeth during?
Lateral or protrusive movement.
The three points of Protrusive movements
- Anteriorly Directed
- Parallel to central grooves
- Passes over mesial marginal ridges
Right side mandibular lateral movement AKA
Laterotruisive movment
Lift side mandibular lateral movement AKA
Mediotrusive movement
The working pathway of the mandibular cusps positioned over the maxillary teeth…
Parallel to the facial groove and travels toward the cheek.
The Non-working pathway of the mandibular cusps positioned over the maxillary teeth…
Parallel to the distal oblique groove on the first molar and travels diagonally toward the anterior and medial
The non-functional area is ________ than the functional area.
Larger
Path of the Left working cusp (centric cusp) during laterotrusive movement of the distolingual cusp on the maxillary first molar?
Through the lingual embrasure between the first and second premolars.
Path of the non working mesiofacial cusp on the maxillary first molar during laterotrusive movement
Mesiofacial grove to the central fossa, and through the lingual groove of the mandibular first molar.
Name the boarder movements of the most superior, anterior, and inferior in the sagittal plane respectively.
Maximum intercuspation
Maximum protrusion point
Max opening point
Name the most anterior, posterior, and Lateral boarder movements in the frontal plane
Posterior: Centric relation
Anterior: max protrusion
Lateral: Extreme Right/Left Lateral movement
The boarder movement in the frontal plane that is not visible
Centric relation is obscured by maximum intercuspation
The correlation of all movements at the condyle level.. Where all movements cross eventually.
Centric Relation
Factors that determine the hight of cusps and depth of
Fossa.
Vertical factors
Factors that influence the direction or location of the ridges and groves and placement of cusps.
Horizontal factors
Determines the amount of vertical movement the mandible can go through.
The steepness of the angle of the lingual surface of the anterior teeth.
Every point on the mandible will move away from the horizontal reference plane if…
The PCF (condyle joints), and the ACF (anterior teeth) have the same angle.
The factor that limits the movement of the nonworking condyle.
Morphology of the medial wall of the fossa, and the tempromanbular ligament of the working fossa.
The two fixed variables in occlusal morphology
- Condyle guidance angle
2. Mandibular lateral translation, aka Bennet Movement
What happens when a tooth is further away from the axis of rotation.
The wider the angle formed by the latter/mediotrusive pathways.
As mandibularlaterl translation increases…
The angle between two the two latter/mediotrusive pathways also increases.
