Orthotown November 2023 - 62

CONTINUING EDUCATION
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1. Single activations of a rapid maxillary expansion (RME)
appliance typically produce forces of what magnitude?
A. 250-500 g.
B. 1-3 lbs.
C. 3-10 lbs.
D. 10 lbs.
2. True or false: In his book Contemporary Orthodontics,
Proffit stated that there is no evidence of any advantage
of rapid movement and high forces when performing
palatal expansion on children in the mixed dentition,
and ample evidence that it can be dangerous.
A.
True.
B. False.
3. Bell found that when compared to RME, the rate
of midpalatal suture separation by slow maxillary
expansion (SME):
A.
B. Improves the maintenance of tissue integrity of
the suture.
C. Results in less relapse potential.
D. All of the above.
4. Martina et al. concluded that SME is ______ effective
when compared with RME in achieving orthopedic
expansion of the maxilla of preadolescent patients:
A.
Less.
B. More.
C. Equally.
5. Nanda and Marzban found that SME with a NiTi
expander resulted in all of the following, except:
A. Maintenance of tissue integrity.
B. Creation of an unsightly midline gap.
C. Minimal buccal tipping.
D.
A physiologic response along the suture.
6. Expansion of the mandibular arch in preadolescent
patients is best classified as:
A.
Sutural.
B. Dental.
C. Dentoalveolar.
D. Impossible.
7.
In what decade was the Schwartz appliance designed to
expand the mandibular arch?
A. 1940s.
B. 1960s.
C. 1980s.
D. 2000s.
8. O'Grady and colleagues concluded that expansion of
the mandibular arch of preadolescent patients with a
Schwartz appliance:
A. Does not increase mandibular arch width or arch
perimeter in the long term.
B. Results in mild increases in mandibular arch width and
perimeter in the long term.
C.
Significantly increases mandibular arch width and
perimeter in the short term, but not in the long term.
D. Significantly increases mandibular arch width and
perimeter in the long term.
Allows for a more physiologically tolerable response
by the sutural elements.
9. In Case 1, how much expansion was achieved across the
primary maxillary first molars using braces and wires?
A. 2.71 mm.
B. 4.71 mm.
C. 7.71 mm.
D. 10.71 mm.
10. In Case 2, how much expansion was achieved across
the permanent maxillary first molars using braces and
wires?
A. 2.24 mm.
B. 3.24 mm.
C. 4.24 mm.
D. 5.24 mm.
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NOVEMBER 2023 | 62 | ORTHOTOWN.COM

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Orthotown November 2023

Table of Contents for the Digital Edition of Orthotown November 2023