Final Flashcards
What is the percentage of Class II malocclusion in the general population?
30%
Functional POSTERIOR crossbite due to MAXILLARY DEFICIENCY is readily apparent in:
Maximum interdigitation
The main etiology of functional posterior crossbite:
Maxilla slightly narrower than mandible in the transverse plane
What is the most common association with class III?
Anterior crossnbite
What is the treatment for an 8 year old patient with class III moderate malocclusion with anterior crossbite?
Maxillary expansion and protraction face mask
What percentage of patients with class III jaw relationship have maxillary deficiency?
65%
T/F: Intermaxillary elastics are appropriate for use in severe skeletal class II or III malocclusion
False
T/F: Invisalign can be done without orthodontic knowledge
False
What is the percentage for a normal overbite?
20% +/-5
Which movement does not require the use of attachments?
Intrusion
How can you prevent relapse after correction of a deep bite?
Hawley retainer with anterior bite plate
Which of the following are suitable treatment options for Class I Division 2?
-Lower pull headgear
-Intrusion of upper incisiors
-Lower molar eruption
-All of the above
All of the above
Which of the following is true in regard to open bites?
-Present in a multitide of malocclusions
-Widely understood
-Heavily studied
-Not as common for relapse
-Present in a multitude of malocclusions
Question about how much incisors are showing at rest in open bite?
Variable but usually increased
What is the function of bite ramps in invisalign?
They function to level the curve of spee
What is the most common SURGICAL procedure to treat skeletal class II deep bite?
Mandibular advancement
Dentoalveolar movement of fixed functional appliances:
Proclination of lower incisors
Dentoalveolar compensation of class III malocclusion:
Proclined upper incisors, retroclined lower incisors
Slow extrusion results in:
uneven gingival margin
Sequence of restoration before extrusion:
Posterior first before anterior
T/F: You use implants to upright mesially tilted molars
True
Anchorage teeth/bracketing is an example of:
Passive
Rapid extrusion =
High force
Treatment for 11yo with deep bite:
Functional appliance
T/F: You should consider esthetics and occlusion of teeth BEFORE retention
True
What dentoalveolar compensation is most common in open bite?
Over-eruption of upper molars
How often should fiberotomies be dome in rapid extrusion?
2-3 weeks
When to correct pseudo-anterio crossbite:
As soon as possible in mixed dentition
What is done to the curve of spee in a deep bite?
Level of curve spee
What is the function of a twin block?
Mandibular growth enhancement
Class II division 1=
Increased overjet
Class II division 2=
Retroclined upper central incisors
Applying force only to the crown of a tooth will result in:
Tipping
Transverse deficiencies can be:
present in any type of malocclusions
Ideal age to treat:
8-10
What is the most common etiology for class II malocclusion:
Retrognathic mandible
How much of the population has a transverse discrepency?
30%
