Things that owned me on the DRILL-part 4 Flashcards
During initial and intermediate jaw opening movement, articular disc moves with the ______.
Condyle
During initial and intermediate jaw opening movement, INFERIOR belly of the Lateral Pterygoid _______, the SUPERIOR belly of the lateral pterygoid ______.
contracts…relaxes
From an occlusal view, what anatomical feature is frequently found on BOTH the primary maxillary first and second molars?
A well developed oblique ridge
TRUE or FALSE???? From a frontal view, the angulation of the maxillary incisors is lined up with the horizontal axis.
False (WTF?!)
TRUE or FALSE????? From a sagittal view, the angulation of the maxillary incisors is lined up with the vertical axis.
False
The dentin of the crown of a tooth and that of the root differ by the primary _______ of the tubules DECREASE in root dentin.
CURVATURES
Does the anterior temporalis contract on normal closure of the mandible?
YES!
True or False? The crest of curvature (or crest of contour) on premolars and anterior teeth is located approximately the same distance from the cervical line
false…PMs are a bit more occlusally positioned
TRUE OR FALSE? Perm Max 1st molar- Its faciolingual width is greater than its mesiodistal length
TRUE
TRUE OR FALSE? Perm Max 1st molar- There is a shallow facial groove that lies between the facial cusps
False
TRUE OR FALSE? Perm Max 1st molar- It is the second-largest tooth in the maxillary arch
False
TRUE OR FALSE? Perm Max 1st molar- The occlusal table appears square in shape, due to the tooth’s four well developed cusps
False
True or False: Primary Max 2nd molar- Occlusally, the crown is rhomboidal, with the oblique ridge connecting the mesiolingual cusp with the distolingual cusp
FALSE (fuck me right!?)
True or False: Primary Max 2nd molar- Unlike the first molar, the cervical constrictions are less conspicuous
True
WTF!?! Inorganic crystals in enamel have their LONG AXIS parallel to the RODS in the ______ of the rods and deviating increasing the _____.
Bodies….tails
In MI, the oblique ridge of a perm max 1st molar opposes what?
the developmental groove separating the DF and D cusps on the mand 1st molar (how did you get that wrong?!)
Eruption yo: True or False–The mixed dentition phase begins with the emergence of the permanent central incisors and ends with the emergence of the second molars
False..hmm it must end with the canine coming in…the 2nd molar is not succedaneous
Eruption yo: True or False– The emergence of the primary dentition occurs between the ages of 6 months and 30 months
true
Dang, I had no clue…In an acquired Class III crossbite relationship, as the mandible retrudes, the permanent maxillary lateral incisor contacts which of the following teeth?
Canine and Lateral Incisors
This SEEMED like a straightforward question…The size, shape and alignment of the _____________ determine many of the limits of mandibular movements.
Teeth
What TMJ ligaments has an outer oblique portion that limits the extent of jaw opening and initiates translation of the condyle down the articular eminence?
Tempromandibular Ligament
True or False: mandibular second molar pulp and root morphology—The root trunk is prominent
True
True or False: mandibular second molar pulp and root morphology—The mesiofacial orifice lies directly below the mesiofacial cusp tip and the mesiolingual orifice lies below the mesiolingual cusp tip
False (they are more in the center of the tooth eh?)
True or False: mandibular second molar pulp and root morphology—This tooth most frequently has two roots with three canals
True
True or False: mandibular second molar pulp and root morphology—The roots of the second molar taper and are more pointed than the roots of the first molar
True
True or False: mandibular second molar pulp and root morphology—The mesial root is less broad faciolingually on this tooth than on the first molar
True
Where can I find a CONVEX proximal root surface on the perm mand 1st molar?
the DISTAL aspect of the DISTAL root
Anterior Function and Guidance: True or False– The vertical overlap of the incisors indicates the amount of vertical disocclusion that is available
True
Anterior Function and Guidance: True or False– Anterior teeth exhibit a passive contact in the intercuspal position vs. posterior teeth
True
Anterior Function and Guidance: True or False–The anterior teeth separate the premolars but not the molars during function and the anterior teeth also prevent lateral movement of the mandible
False
Anterior Function and Guidance: True or False–When combined with a bruxism habit, steep anterior guidance may force anterior teeth to move in a facial direction
True
Ahhh yes, this one…Prevalence of OLIGODONTIA is between 1% and 2% in the ______ dentition, and between 3% and 9% in the ______ dentition
primary…permanent
From proximal views, incisal edges and/or cusp tips are in a position slightly FACIAL to a bisecting line through the height of curvature of the cervical line and the apex of the root in the permanent….
Max Lateral Incisors
The Bennett movement is best described as the bodily shift of the mandible in the direction of the ______ condyle
working
Perm Mand Cent Incis Pulp Morph-True or False-The canal typically is located on the lingual portion of the root apex
False
Perm Mand Cent Incis Pulp Morph-True or False-The labiolingual dimension is very large
True
Perm Mand Cent Incis Pulp Morph-True or False- Two canals are not typical
True
Perm Mand Cent Incis Pulp Morph-True or False-
The mesiodistal dimension is small
True
Perm Mand Cent Incis Pulp Morph-True or False-The mandibular lateral incisor pulp chamber tends to be larger
True!
Got lucky—-Accessory root canals can be formed by
a break in the _______ prior to dentin formation
epithelial root sheath (Hertwig)
