Things that owned me on the DRILL-part 1 Flashcards
During a lateral movement of the mandible, the ARTICULAR DISC is tightly attached to the HEAD of the CONDYLE by which LIGAMENT??
Collateral ligament
In a RIGHT working movement, the MF cusp of a PERM MAX Right 2nd MOLAR will pass through what??
the facial groove of the mand 2nd molar
Muscle vectors in a sagittal plane: what is the vector for the Lateral Pterygoid?
ANTERIOR
True or False: When viewing mandibular movement at the CONDYLAR level on a SAGITTAL tracing, the angulation between MAXIMUM PROTRUSION and the HORIZONTAL AXIS is GREATER THAN the angulation between the NON-WORKING pathway and the HORIZONTAL axis.
FALSE! the NW pathway and the horizontal axis have the greatest angle
Which tooth has the LEAST developed cingulum?
mandibular Lateral incisor
Where is the D contact area on a perm mandibular canine? where is the M contact?
II II IM….distal=middle, mesial=incisal
During a WORKING movement of the mandible, the F cusp ridges of the MAX 1ST PM on the working side oppose which mandibular structures?
the D cusp ridge of the mand 1st pm and the M cusp ridge of the 2nd PM
Which mandibular has root surface depressions on BOTH its proximal surfaces?
the mand 1st PM
Which extrinsic muscle of the tongue RETRACTS the tongue?? (according to Dr. A)
the STYLOglossus!!!! (& the hyoglossus if you want to get technical with it)
True or False: Primary vs Perm–The dentin thickness between the pulp chambers and the enamel is limited, particularly in some areas (mandibular second primary molar)
TRUE! (so why did you mark it as false?!) :)
True or False: Ideal occlusal contacts should occur between a cusp tip and a flat surface like a marginal ridge.
TRUE! that AND cusp & fossa!
During the life span of a multi rooted tooth, where does dentin continue to form MOST rapidly???
FLOOR and ROOT of the pulp chamber
The condyle on the working side generally rotates about a ______ axis and ________ laterally
verticle…translates
When in its proper position relative to the plane of occlusion, the crown of a permanent mandibular second molar inclines _____ and ______.
MESIAL and Lingual
T/F: Supernumerary teeth are of normal shape and size
F
T/F: Supernumerary teeth are rarely associated with cleft lip and palate
F
T/F: The Incidence of supernumerary teeth is quite common in primary dentition (between 3% and 4%) and uncommon in the permanent dentition (between 1% and 1.5%)
F
T/F: Neonatal teeth are supernumerary teeth
F
T/F: The maxilla is significantly more likely to have supernumerary teeth as the mandible
T
What is the most unique feature of a maxillary canine from a facial view?
concavity on the DF cervical 1/3 (HUGE CAVITY AREA)
Which tooth is more likely to have 1 or NO pulp horns?
Mandibular Incisiors (RATS! I put max incisors)
T/F: At 14 weeks in utero, hard tissue begins forming in the central incisor, and sometimes the lateral incisor
True
T/F: At 55 - 56 days in utero, hard tissue begins forming in the central incisor
FALSE- 56 days is 8 weeks. QUICK MATH tells me this is Way to SOON
T/F: By 16 weeks in utero, hard tissue begins forming in in the first molar
True
T/F: At 42 - 48 days in utero, the dental lamina forms
True
T/F: By 18 weeks in utero, hard tissue begins forming in the second molar
True
Is Chronic Periodontitis a symptom of pathogenic occlusion?
Hell NAW
The Bennett Angle is formed between between _______ and _________ lines on the pantographic tracing
protrusive and NW lines…how did i get this wrong?? OH, I put protrusive and NW condyler paths, not PANTOGRAPHIC TRACING (WTF?)
The stylomandibular ligament limits excessive _______ movement of the mandible
protrusive
What kind of a role does the sphenomandibular ligament play in limiting mandibular movement?
A MINIMAL role
The roots of primary anterior teeth are comparatively ________ and ________ when matched against the permanent dentition.
Narrower, longer
What is the shape of the functional form of Max 2nd PMs?
Oval
Movement of the mandible is characterized by the position of the _________ in ______________.
condyle in the GLENIOD FOSSA (not the articular eminence)
In a sagittal plane, what is the THICKEST section of the articular disc?
Posterior border
Permanent MANDIBULAR canines usually erupt at age:
9-10 years
The dentition of a normally developed 7 year old has ____ primary teeth and ___ permanent teeth.
18 primary (only lost the central’s)….6 permanent (centrals in, 1st molars in)
What is the shape of the Mand 1st PM from the FACIAL aspect?
pentagonal (not diamond, which is occlusal view!)
Does normal mastication INFLUENCE the alignment of teeth?
NO!!! go figure!
T/F: In the horizontal plane, the contour of the glenoid fossa’s posterior wall (working side) dictates the placement of tooth grooves in the working side
True
T/F: Immediate side shift is movement into the position toward the medial fossa wall on the working side
True
T/F: The working groove is usually at a right angle to the central groove, while the nonworking groove is usually oriented at an oblique angle to the central groove
True
T/F: The Bennett Angle is another name for the Bennett Movement
False!
T/F: In the horizontal plane, the contour of the glenoid fossa’s medial wall (nonworking side) determines working, nonworking and central groove position and width
True
The permanent anterior tooth whose pulp chamber has the GREATEST FL measurement is the????
MAXILLARY CANINE
T/F: Coordinated chewing operates at the open end of a chewing stroke when muscle elevator and muscle opener actions overlap
True
T/F: The crushing stage requires 3-4 strokes and the tituration (grinding) stage averages 20 strokes
True
T/F: The adaptive arc of closure and the touch-open reflexes both occur at the expense of muscles and joints
True
T/F: During mastication, the food bolus is normally positioned bilaterally on both the working and non-working sides
False
T/F: Actual tooth contact during chewing is common
False
