ABO REVIEW | 769 QUESTIONS AND ANSWERS | NEW
2026 UPDATE | RATED 100% CORRECT
Where do you superimpose for a 10 year longitudinal study? Answer - SN at S
HIPAA stands for Answer - Health Insurance Portability and Accountability Act
What are the advantages to giving PLT rich plasma during sx? Answer - B/c it
contains PLT derived growth factor, transforming GF, insulin like GF
When does the cranium complete maximum growth? Answer - Age 7
The most rapid somatic growth occurs from age __ to __ Answer - 0 to 2 yo
Dx for pt w open bite, 27 mm opening, deviates left on opening Answer -
internal DD without reduction
Paralyzed right lateral pterygoid muscle, which direction will the mn deviate on
opening Answer - right
DD without reduction what do you see? Answer - Deviation to affected side,
limited opening/lateral movement
Amount of opening with a closed lock Answer - 23 mm
,What is seen in acute closed lock (3)? Answer - Deviation upon opening,
limited ROM (<27 mm), pain with forced max opening
Significant decalc occurs in __ of ortho patients Answer - 50%,
Patients should avoid large amounts of fluoride to remin enamel T/F Answer -
True
Hypertelorism is seen in __ Answer - midline (midline cleft causes
hypertelorism, large d between eyes)
Wormian bones are seen in __ and __ Answer - clediocranial dysplasia and
osteogenesis imperfect
8 bit photography has __ shades of gray. The human eye can see __ shades of
gray. Answer - 256, 16
What % of open bites self-correct? Answer - 80%
Surfaces of TMJ lined by __ Answer - thin synovial membrane
What is the best imaging method for perf. Disc? Answer - Arthrography
Which gingival fiber is assoc w the most relapse? Answer - Supracrestal
If pt has 2 mm CR-CO shift into Cl I in finishing stage, what is the appropriate
tx? Answer - Equilibrate mn distal inclines and mx mesial inclines
,If pt has > 2 mm CR-CO shift into Cl I in finishing stage, what is the appropriate
tx? Answer - Cl II elastics
What is the best statistical measure to predict mn growth based on 3 variables?
Answer - ANOVA
Increase/decrease in voxel size increases resolution Answer - decrease
Changing voxel size affects magnification T/F Answer - false
What is the best surgical procedure for pt w TMD? Answer - IVRO - intraoral
vertical ramus osteotomy
Missing one 3rd molar results in increased rate of small laterals and
supernumeraries T/F Answer - F, but does result in 13x greater chance to be
missing other teeth, 3.5% chance of missing 2nd premolar
What is the philtrum derived from? Answer - median nasal process and
maxillary process
When do 2 halves of mn symphysis fuse? Answer - 3 mo after birth
When does mineralization of perm 1st molars begin? Answer - At birth
Sequence of CPR Answer - 30 compressions then 2 breaths
Where are chest compressions given in an adult? Answer - Lower ½ of sternum
, HPHG where to put force to give clockwise moment around mx molar Answer -
distal to CoRes
Prostaglandins assoc w __, __ and __ Answer - IFN-gamma, IL-1 and TNF-
alpha, NOT neocytokines
Which syndrome affects both mx and mn and occurs due to disturbance in 1st
trimester? Answer - Hemifacial microsomia
Syndesmosis is not a growth site T/F Answer - T
Max opening is measured from __ to __ Answer - incisal edge to incisal edge +
OB
Pt has unilateral x bite w/o detectable functional shift, what can be done to
evaluate? Answer - Flat plane splint
Pt has hx of internal derangement w/o joint sounds, pt developed pain in TMJ
Answer - posterior capsulitis
CL due to failure of fusion of __ and __ Answer - median nasal process and
maxillary process
Gingival clefting seen when __ is attempted in adults Answer - orthopedic mx
expansion
There is a consensus in the definition of CR T/F Answer - F
2026 UPDATE | RATED 100% CORRECT
Where do you superimpose for a 10 year longitudinal study? Answer - SN at S
HIPAA stands for Answer - Health Insurance Portability and Accountability Act
What are the advantages to giving PLT rich plasma during sx? Answer - B/c it
contains PLT derived growth factor, transforming GF, insulin like GF
When does the cranium complete maximum growth? Answer - Age 7
The most rapid somatic growth occurs from age __ to __ Answer - 0 to 2 yo
Dx for pt w open bite, 27 mm opening, deviates left on opening Answer -
internal DD without reduction
Paralyzed right lateral pterygoid muscle, which direction will the mn deviate on
opening Answer - right
DD without reduction what do you see? Answer - Deviation to affected side,
limited opening/lateral movement
Amount of opening with a closed lock Answer - 23 mm
,What is seen in acute closed lock (3)? Answer - Deviation upon opening,
limited ROM (<27 mm), pain with forced max opening
Significant decalc occurs in __ of ortho patients Answer - 50%,
Patients should avoid large amounts of fluoride to remin enamel T/F Answer -
True
Hypertelorism is seen in __ Answer - midline (midline cleft causes
hypertelorism, large d between eyes)
Wormian bones are seen in __ and __ Answer - clediocranial dysplasia and
osteogenesis imperfect
8 bit photography has __ shades of gray. The human eye can see __ shades of
gray. Answer - 256, 16
What % of open bites self-correct? Answer - 80%
Surfaces of TMJ lined by __ Answer - thin synovial membrane
What is the best imaging method for perf. Disc? Answer - Arthrography
Which gingival fiber is assoc w the most relapse? Answer - Supracrestal
If pt has 2 mm CR-CO shift into Cl I in finishing stage, what is the appropriate
tx? Answer - Equilibrate mn distal inclines and mx mesial inclines
,If pt has > 2 mm CR-CO shift into Cl I in finishing stage, what is the appropriate
tx? Answer - Cl II elastics
What is the best statistical measure to predict mn growth based on 3 variables?
Answer - ANOVA
Increase/decrease in voxel size increases resolution Answer - decrease
Changing voxel size affects magnification T/F Answer - false
What is the best surgical procedure for pt w TMD? Answer - IVRO - intraoral
vertical ramus osteotomy
Missing one 3rd molar results in increased rate of small laterals and
supernumeraries T/F Answer - F, but does result in 13x greater chance to be
missing other teeth, 3.5% chance of missing 2nd premolar
What is the philtrum derived from? Answer - median nasal process and
maxillary process
When do 2 halves of mn symphysis fuse? Answer - 3 mo after birth
When does mineralization of perm 1st molars begin? Answer - At birth
Sequence of CPR Answer - 30 compressions then 2 breaths
Where are chest compressions given in an adult? Answer - Lower ½ of sternum
, HPHG where to put force to give clockwise moment around mx molar Answer -
distal to CoRes
Prostaglandins assoc w __, __ and __ Answer - IFN-gamma, IL-1 and TNF-
alpha, NOT neocytokines
Which syndrome affects both mx and mn and occurs due to disturbance in 1st
trimester? Answer - Hemifacial microsomia
Syndesmosis is not a growth site T/F Answer - T
Max opening is measured from __ to __ Answer - incisal edge to incisal edge +
OB
Pt has unilateral x bite w/o detectable functional shift, what can be done to
evaluate? Answer - Flat plane splint
Pt has hx of internal derangement w/o joint sounds, pt developed pain in TMJ
Answer - posterior capsulitis
CL due to failure of fusion of __ and __ Answer - median nasal process and
maxillary process
Gingival clefting seen when __ is attempted in adults Answer - orthopedic mx
expansion
There is a consensus in the definition of CR T/F Answer - F
