ABGD Ortho Question and answers already passed 2024/2025
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Course
ABG
Institution
ABG
ABGD Ortho Question and answers already passed 2024/2025 ABGD Ortho/Pedo
What allows nickel titanium wires to have its shape memory? - correct answer - The phase transformation between martensitic form (regain form in higher temp), intermediate phase and austenitic form (deformed in lower temp...
ABGD Ortho/Pedo
What allows nickel titanium wires to have its shape memory? - correct answer
✔- The phase transformation between martensitic form (regain form in higher
temp), intermediate phase and austenitic form (deformed in lower temp)
allows the property of shape memory;
- The key factor is that the phase transformation can occur in relatively low
temperature and narrower temperature range compared to stainless steel;
What does Formocresol consist of and how does it work? - correct answer
✔- Formocresol is 19% formaldehyde, 35% cresol, 15% glycerin and water;
- It prevents tissue autolysis (fixative) by bonding proetins in the radicular
pulp.
Name space maintainers for missing single tooth? - correct answer ✔- Band
and loop space maintainers;
- Distal shoe (guide plane must extend apically);
Name space maintainers for missing multiple posterior teeth and alternatives
if occlusion is an issue. - correct answer ✔- Lower lingual holding arch
(LLHA);
- Maxillary lingual arch;
- Alternatives for maxillary lingual holding arches are Nance appliance, which
has rests on palate with an acrylic button, and transpalatal arch appliance.
What are the effects of non-nutritive sucking? - correct answer ✔- Maxillary
anterior teeth tip facially and mandibular anterior teeth tip lingually;
- Overjet increases and overbite decreases;
- May narrow maxillary arch width resulting in posterior crossbite;
, What oral issues can arise from asthma? - correct answer ✔- Caries from
xerostomia due to medication (beta-2 agonist);
- Increased anterior facial height, higher palatal vault and higher prevalence of
posterior due to impaired naso-respiratory function;
What are the maximum dosages of local anesthesia in children? - correct
answer ✔- Lidocaine: 2.0mg/lb;
- Mepivacaine: 2.0mg/lb;
- Articaine: 3.2mg/lb;
- Bupivacaine: 0.6mg/lb;
What is the best approach to close more than 2mm of diastema between
maxillary central incisors? - correct answer ✔- Since spontaneous closure is
unlikely, it is best to wait until the permanent canines erupt than
orthodontically move the teeth together with frenectemy in case of excess
tissue in between.
What is circumferential supracrestal fiberotomy? - correct answer ✔- It is an
effective method to control rotational relapse but does not control the
tendency for crowded incisors to again become irregular
What type of space analysis is the Moyers, Tanaka-Johnston, and Staley-
Kerber? - correct answer ✔- Moyers, Tanaka-Johnson and Staley-Kerber
analysis all estimate the size of unerupted permanent teeth using the size of
primary dentiton;
- These methods are all based on white children of northern Europe;
What is Bolton's analysis? - correct answer ✔- Bolton's analysis compares
the proportion of maxillary to mandibular teeth in the permanent dentition.
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