FAGD Exam - Orthodontics Exam
Questions & Answers (Grade A+)
Maxillary fixed bilateral space maintainer is also known as? -
correct answer ✅Nance appliance
If both primary canines were present, what appliance could be used
in place of a Nance appliance (maxillary fixed bilateral space
maintainer)? -
correct answer ✅Band and loop (bilateral)
What situation is a Nance appliance appropriate for? -
correct answer ✅Premature bilateral loss of maxillary primary
teeth
What are the 4 properties of ideal wire material? -
correct answer ✅1. High strength
2. Low stiffness
3. High working range
4. High formability
Stainless steel wire characteristics -
correct answer ✅- good mechanical properties
- excellent corrosion resistance
,FAGD Exam - Orthodontics Exam
Questions & Answers (Grade A+)
- low cost
- highest modulus of elasticity
- lowest spring back
- 18% chromium, 8% nickel
Stainless steel vs nickel titanium orthodontic wires -
correct answer ✅Stainless steel has a high modulus of elasticity
and a lower resilience
NiTi orthodontic wire characteristics -
correct answer ✅Offer a highly desirable combination of low
modulus of elasticity and extremely wide working range
Benefits of the Hawley retainer? -
correct answer ✅- palatal coverage makes it possible to
incorporate a bite plant lingual to the upper incisors to control bite
depth
-
What is the major source of anchorage in a Hawley appliance? -
correct answer ✅Palatal coverage
, FAGD Exam - Orthodontics Exam
Questions & Answers (Grade A+)
Prior to direct bonding, ________ is used as an etching agent. Prior
to placing bands, ________ is used as an etching agent? -
correct answer ✅35-50% unbuffered phosphoric acid
Nothing
Indications for using bands instead of banded brackets? (4) -
correct answer ✅1. To provide better anchorage for greater tooth
movement
2. For teeth that will need both lingual and labial attachment
3. Teeth with short clinical crowns
4 Tooth surfaces that are incompatible with successful bonding
What is the "anchorage value" of any tooth? -
correct answer ✅It is roughly equivalent to its root surface area
(the same as the periodontal ligament area)
What are the 5 anchorage types? -
correct answer ✅1. Reciprocal tooth movement: is produced when
two teeth or resistance units of equal size are moved against each
other and move the same amount toward or away from each other.
Questions & Answers (Grade A+)
Maxillary fixed bilateral space maintainer is also known as? -
correct answer ✅Nance appliance
If both primary canines were present, what appliance could be used
in place of a Nance appliance (maxillary fixed bilateral space
maintainer)? -
correct answer ✅Band and loop (bilateral)
What situation is a Nance appliance appropriate for? -
correct answer ✅Premature bilateral loss of maxillary primary
teeth
What are the 4 properties of ideal wire material? -
correct answer ✅1. High strength
2. Low stiffness
3. High working range
4. High formability
Stainless steel wire characteristics -
correct answer ✅- good mechanical properties
- excellent corrosion resistance
,FAGD Exam - Orthodontics Exam
Questions & Answers (Grade A+)
- low cost
- highest modulus of elasticity
- lowest spring back
- 18% chromium, 8% nickel
Stainless steel vs nickel titanium orthodontic wires -
correct answer ✅Stainless steel has a high modulus of elasticity
and a lower resilience
NiTi orthodontic wire characteristics -
correct answer ✅Offer a highly desirable combination of low
modulus of elasticity and extremely wide working range
Benefits of the Hawley retainer? -
correct answer ✅- palatal coverage makes it possible to
incorporate a bite plant lingual to the upper incisors to control bite
depth
-
What is the major source of anchorage in a Hawley appliance? -
correct answer ✅Palatal coverage
, FAGD Exam - Orthodontics Exam
Questions & Answers (Grade A+)
Prior to direct bonding, ________ is used as an etching agent. Prior
to placing bands, ________ is used as an etching agent? -
correct answer ✅35-50% unbuffered phosphoric acid
Nothing
Indications for using bands instead of banded brackets? (4) -
correct answer ✅1. To provide better anchorage for greater tooth
movement
2. For teeth that will need both lingual and labial attachment
3. Teeth with short clinical crowns
4 Tooth surfaces that are incompatible with successful bonding
What is the "anchorage value" of any tooth? -
correct answer ✅It is roughly equivalent to its root surface area
(the same as the periodontal ligament area)
What are the 5 anchorage types? -
correct answer ✅1. Reciprocal tooth movement: is produced when
two teeth or resistance units of equal size are moved against each
other and move the same amount toward or away from each other.
