2013-2017 Pt. 3 Flashcards
In bone loss, there is decreased…?
osteoblasts production/formation
2nd most common craniofacial defect after cleft lip and palate?
Hemifacial Microsomia
Which is not formed by the frontonasal process?
a. secondary process
b. primary process
c. vermillion of lip
d. maxillary process
e. columnella
d. Maxillary process is not
Early extraction of primary canines will do all of the following except?
a. Increased OJ
b. Increased OB
c. Fix midline discrepancy
d. Incisors will distalize
FIX MIDLINE DISCREPANCY
When doing a Maryland bridge, what should be the inclination of the incisors compared to the occlusal plane?
Perpendicular
What is the width/height ratio of the central incisor optimally?
80%
Where is opisthion located?
Posterior part of foramen magnum
Forsus does all of the following except?
a. Mesialize mand molars
b. distalize max molars
c. Decrease SNA
d. Increase SNB
c. Decrease SNA
Why does radiation dose increase with decreased voxel size
More photons/more radiation is necessary to fill up the fill factor as the pixel fill factor is decreased for greater number of voxels and resolution
What does Pierre Robin not have?
Cleft lip
Median nasal does not give rise to what?
Ala (lateral nasal) Secondary Palate (maxillary process)
When the curve of wilson is deep, what type of occlusal interferences occur?
Non-working interferences
What does not happen if you only extract lower 4s to treat a class III patient
Less balancing interferences
Definition of CR in context of the condylar position
Most anterior superior
When choosing a wire for leveling and aligning, what is most important?
Low load deflection
What is the relationship of maxillary incisors to stomion superiorus in a patient with skeletal open bite?
Below
Which wire has the most friction with SS brackets?
TMA
What is the origin of osteoblasts
mesenchyme-derived cells
Fluoride increases all except
a. size of the hydroxyapatite crystal
b. fluoride uptake
c. solubility
d. pH
c. solubility
T/F, Hyperdivergent treatment in the early mixed dentition is indicated because the phenotype can be detected early
True
Treatment for hyperdivergence
Chin cup
An RPE does all of the following except:
a. expand the basal bone of the maxilla
b. has more expansion anterior than posterior
c. has more expansion inferior than superior
d. nasal cavity remains stable throughout treatment
d. nasal cavity remains stable throughout treatment
What range are bonding materials light cured at?
460-490 nm
Cyst associated with missing tooth, formed from dental lamina
OKC/Primordial cyst
Class II elastics through center of resistance of maxilla. But in mandibular plane, it was distal to center of resistance. What would happen?
Maxillary occlusal plane will remain the same
T/F, Health providers are more at risk for HIV than Hep C or Hep B. You can vaccinate against Hep C
False, False
Studies about external root resorption have found the following to be true
a. Incisor trauma leads to increased risk of RR
b. Heavy forces are more likely than light forces to cause RR
c. RR is not associated with duration of treatment
b. Heavy forces are more likely than light forces to cause RR
Property of springback is related to?
Ability to be activated (exert clinically useful force when bent) beyond yield point
