Q5- Ortho Review for Final, OR 244 - Ortho: Module 8 Quiz,
1,2,3,4,5,6, PTCB Practice Exam (Math)
1. When considering the treatment plan for a patient, there is a heirarchical prioritization of
stages to their dental treatment and plan. Orthodontic treatment would be in what phase:
(which is the correct answer ?)
a. Definitive phase
b. Control phase
c. Reevaluation phase
d. Urgent phase
e. Maintenance phase - correct answer a. Definitive phase
2. Which diagnostic record is not routinely taken as part of standard orthodontic diagnostic
records? (Which is incorrect?)
a. Study models
b. MRI TMJ's
c. Clinical examination
d. Radiograph - Panoramic radiograph (pano)
e. Radiograph - Lateral Cephalogram
f. Photographs - Extraoral and Intraoral - correct answer b. MRI TMJ's
3. When carrying out an examination and evaluation of the soft tissues of a patient for
orthodontic treatment, the following are looked for, except: (which is the incorrect answer ?)
a. Facial vertical thirds
b. Facial horizontal fifths
c. Facial asymmetries
d. Lip projection compared to the esthetic line (e line)
e. Molar relationship of the teeth
f. Smile line and smile arc
g. Lip Competency - correct answer e. Molar relationship of the teeth
4. When examining a set of orthodontic study models, the clinical information that cannot be
obtained is: (which is the incorrect answer ?)
,a. Dental centerlines
b. Incisal overjet
c. Skeletal relationship of the patient
d. Anterior or posterior crossbite
e. Canine and molar relationship
f. Degree of dental crowding - correct answer c. Skeletal relationship of the patient
5. When examining a set of orthodontic study models, the following clinical information can be
obtained except: (which is the wrong answer?)
a. Alignment of the teeth
b. Rotations of the teeth
c. Missing teeth
d. Teeth that are tipped
e. Upper incisal show when patient smiles
f. The curve of Spee - correct answer e. Upper incisal show when patient smiles
6. When reviewing a set of orthodontic study models, dental clinical crowding is classified as:
(which is the correct answer ?)
a. Mild - 0-2mm, Moderate - 2-4mm, Severe - >4mm
b. Mild - 0-3mm, Moderate - 3-6mm, Severe - >6mm
c. Mild - 0-4mm, Moderate - 4-8mm, Severe - >8mm
d. Mild - 0-5mm, Moderate - 5-10mm, Severe - >10mm
e. Mild - 0-6mm, Moderate - 6-12mm, Severe - >12mm - correct answer c. Mild - 0-4mm,
Moderate - 4-8mm, Severe - >8mm
7. From a Panoramic radiograph (pano), the findings you could obtain would include all the
below except: (which is the incorrect answer ?)
a. Length of roots of the teeth
b. The occlusion of the teeth
c. The presence of pathology with the TMJ's
d. Restorations in teeth e. Root morphology - correct answer b. The occlusion of the teeth
,8. Cephalometric analysis of a lateral cephalogram for orthodontic treatment allows the
clinician to evaluate everything except: (what is the incorrect answer ?)
a. evaluate the upper jaw to the cranial base
b. evaluate the lower jaw to the upper jaw (and visa versa)
c. determine the canine and molar relationship
d. determine the position of the teeth to the jaws
e. determine the position of the teeth to the cranial base and facial soft tissues f. the lower jaw
to cranial base - correct answer c. determine the canine and molar relationship
9. When evaluating physical growth for the optimal orthodontic treatment timing, ie. pubertal
growth spurt, the worse predictor of skeletal growth age is:
a. Lateral cephalometric radiograph
b. Chronological age
c. Female or male growth chart, observations plotted every 6 months for standing
height
d. Wrist radiograph evaluation - correct answer b. Chronological age
10. (i) The cephalometric measurement of an individual person is compared to a derived set of
norms to help determine a cephalometric diagnosis for that patient - True or False?
(ii) Different norms are used for patients from different ethnic backgrounds - True or False?
a. True and False
b. True and True
c. False and True
d. False and False - correct answer b. True and True
11. Cephalometric Measurement - Wits Analysis.
This is a: (which is the correct answer )
a. A - Sagittal measurement
b. B - Wits is a linear measurement
c. C - Wits is constructed using the occlusal plane, A point and B point
d. D - A and B correct
, e. E - A, B and C are correct - correct answer e. E - A, B and C are correct
12. Cephalometric Landmark - Sella (S) Which is the incorrect answer ?
a. Sella is located by visual inspection
b. Sella is a landmark "point" and not an angle or linear measurement
c. Sella is a landmark point of a bilateral anatomical structure
d. Sella is used in many important cephalometric analyses'
e. Sella is the geometric center of the pituitary fossa - correct answer c. Sella is a landmark
point of a bilateral anatomical structure
13. Cephalometric Landmark - Nasion (N) Which is the incorrect answer ?
a. Nasion is a landmark point used in SNA
b. Nasion is a point landmark and not a linear measurement
c. Nasion is a point in the midsagittal plane
d. Nasion is the most anterior point of the frontonasal suture
e. Nasion is the point of the most concave part of the nasal bone - correct answer e. Nasion is
the point of the most concave part of the nasal bone
14. Cephalometric Landmark - Point A (A) Which statement is correct?
a. A - A point is known as supramentale
b. B - A point is the most posterior midline point of the maxilla
c. C - A point is the most posterior midline point in the concavity between ANS and prosthion
d. D - A point is used to assess the most reliable anterior aspect of the maxilla e. E - Both C and
D are correct - correct answer e. E - Both C and D are correct
15. There are FOUR stages or phases of orthodontic treatment involved when a patient is
treated with a fixed appliance. Which statement is correct?
a. When in the finishing and detailing phase, you would expect to be in a light NiTi orthodontic
archwire
b. When in the working phase, you would expect to be in a light NiTi orthodontic archwire
c. When in the leveling and aligning phase, you would expect to be in a light NiTi orthodontic
archwire
1,2,3,4,5,6, PTCB Practice Exam (Math)
1. When considering the treatment plan for a patient, there is a heirarchical prioritization of
stages to their dental treatment and plan. Orthodontic treatment would be in what phase:
(which is the correct answer ?)
a. Definitive phase
b. Control phase
c. Reevaluation phase
d. Urgent phase
e. Maintenance phase - correct answer a. Definitive phase
2. Which diagnostic record is not routinely taken as part of standard orthodontic diagnostic
records? (Which is incorrect?)
a. Study models
b. MRI TMJ's
c. Clinical examination
d. Radiograph - Panoramic radiograph (pano)
e. Radiograph - Lateral Cephalogram
f. Photographs - Extraoral and Intraoral - correct answer b. MRI TMJ's
3. When carrying out an examination and evaluation of the soft tissues of a patient for
orthodontic treatment, the following are looked for, except: (which is the incorrect answer ?)
a. Facial vertical thirds
b. Facial horizontal fifths
c. Facial asymmetries
d. Lip projection compared to the esthetic line (e line)
e. Molar relationship of the teeth
f. Smile line and smile arc
g. Lip Competency - correct answer e. Molar relationship of the teeth
4. When examining a set of orthodontic study models, the clinical information that cannot be
obtained is: (which is the incorrect answer ?)
,a. Dental centerlines
b. Incisal overjet
c. Skeletal relationship of the patient
d. Anterior or posterior crossbite
e. Canine and molar relationship
f. Degree of dental crowding - correct answer c. Skeletal relationship of the patient
5. When examining a set of orthodontic study models, the following clinical information can be
obtained except: (which is the wrong answer?)
a. Alignment of the teeth
b. Rotations of the teeth
c. Missing teeth
d. Teeth that are tipped
e. Upper incisal show when patient smiles
f. The curve of Spee - correct answer e. Upper incisal show when patient smiles
6. When reviewing a set of orthodontic study models, dental clinical crowding is classified as:
(which is the correct answer ?)
a. Mild - 0-2mm, Moderate - 2-4mm, Severe - >4mm
b. Mild - 0-3mm, Moderate - 3-6mm, Severe - >6mm
c. Mild - 0-4mm, Moderate - 4-8mm, Severe - >8mm
d. Mild - 0-5mm, Moderate - 5-10mm, Severe - >10mm
e. Mild - 0-6mm, Moderate - 6-12mm, Severe - >12mm - correct answer c. Mild - 0-4mm,
Moderate - 4-8mm, Severe - >8mm
7. From a Panoramic radiograph (pano), the findings you could obtain would include all the
below except: (which is the incorrect answer ?)
a. Length of roots of the teeth
b. The occlusion of the teeth
c. The presence of pathology with the TMJ's
d. Restorations in teeth e. Root morphology - correct answer b. The occlusion of the teeth
,8. Cephalometric analysis of a lateral cephalogram for orthodontic treatment allows the
clinician to evaluate everything except: (what is the incorrect answer ?)
a. evaluate the upper jaw to the cranial base
b. evaluate the lower jaw to the upper jaw (and visa versa)
c. determine the canine and molar relationship
d. determine the position of the teeth to the jaws
e. determine the position of the teeth to the cranial base and facial soft tissues f. the lower jaw
to cranial base - correct answer c. determine the canine and molar relationship
9. When evaluating physical growth for the optimal orthodontic treatment timing, ie. pubertal
growth spurt, the worse predictor of skeletal growth age is:
a. Lateral cephalometric radiograph
b. Chronological age
c. Female or male growth chart, observations plotted every 6 months for standing
height
d. Wrist radiograph evaluation - correct answer b. Chronological age
10. (i) The cephalometric measurement of an individual person is compared to a derived set of
norms to help determine a cephalometric diagnosis for that patient - True or False?
(ii) Different norms are used for patients from different ethnic backgrounds - True or False?
a. True and False
b. True and True
c. False and True
d. False and False - correct answer b. True and True
11. Cephalometric Measurement - Wits Analysis.
This is a: (which is the correct answer )
a. A - Sagittal measurement
b. B - Wits is a linear measurement
c. C - Wits is constructed using the occlusal plane, A point and B point
d. D - A and B correct
, e. E - A, B and C are correct - correct answer e. E - A, B and C are correct
12. Cephalometric Landmark - Sella (S) Which is the incorrect answer ?
a. Sella is located by visual inspection
b. Sella is a landmark "point" and not an angle or linear measurement
c. Sella is a landmark point of a bilateral anatomical structure
d. Sella is used in many important cephalometric analyses'
e. Sella is the geometric center of the pituitary fossa - correct answer c. Sella is a landmark
point of a bilateral anatomical structure
13. Cephalometric Landmark - Nasion (N) Which is the incorrect answer ?
a. Nasion is a landmark point used in SNA
b. Nasion is a point landmark and not a linear measurement
c. Nasion is a point in the midsagittal plane
d. Nasion is the most anterior point of the frontonasal suture
e. Nasion is the point of the most concave part of the nasal bone - correct answer e. Nasion is
the point of the most concave part of the nasal bone
14. Cephalometric Landmark - Point A (A) Which statement is correct?
a. A - A point is known as supramentale
b. B - A point is the most posterior midline point of the maxilla
c. C - A point is the most posterior midline point in the concavity between ANS and prosthion
d. D - A point is used to assess the most reliable anterior aspect of the maxilla e. E - Both C and
D are correct - correct answer e. E - Both C and D are correct
15. There are FOUR stages or phases of orthodontic treatment involved when a patient is
treated with a fixed appliance. Which statement is correct?
a. When in the finishing and detailing phase, you would expect to be in a light NiTi orthodontic
archwire
b. When in the working phase, you would expect to be in a light NiTi orthodontic archwire
c. When in the leveling and aligning phase, you would expect to be in a light NiTi orthodontic
archwire
