orthodontics practice questions with complete solu
orthodontics practice questions
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Orthodontics
Orthodontics
Orthodontics
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Orthodontics Practice Questions With Complete
Solutions Latest Update
True or False: Attempts to correct malocclusions go back at least to 1000bc -
correct answers True
What classification system the first clear and simple definition of normal occlusion
and 3 major types of malocclusion? - correct answers Angles classification of
malocclusion
What is angles postulate? - correct answers -upper first molars are the key to
occlusion
-Mesiobuccal cusp of the upper molar should occlude in the buccal groove of the
lower molar
Class I normal occlusion - correct answers -Mesiobuccal cusp of the upper molar
should occlude in the buccal groove of the lower molar
-If the teeth are arranged on a smoothly curving line of occlusion
Andrews' 6 Keys to Normal Occlusion - correct answers Molar Relationship (Angle's
Class I)
Angulation (tip of teeth)
Inclination (torque of teeth)
Rotation (of teeth)
,No Spaces
Occlusal plane Flat - No Curve of Spee
angulation of teeth - correct answers
Mesiodistal tipping - correct answers Mesio-distal Angulation refers to the tipping
of the crown mesially and the root distally in the maxillary or mandibular arch.
Inclination torque of teeth - correct answers
Rotation of teeth - correct answers
Class 1 Malocclusion - correct answers Picture B
Class 2 Malocclusion - correct answers
Class 2 Div 2 malocclusion - correct answers Maxillary centrals and laterals.
Centrals are lingually torqued
And laterals are buccally torqued.
Overjet - correct answers Measured in mm
,Overjet is defined as horizontal overlap of the incisors. Normally, the incisors are in
contact, with the upper incisors ahead of the lower by only the thickness of their
incisal edges (i.e., 2 to 3 mm overjet is the normal relationship). (Proffit 7)
Class 3 malocclusion - correct answers Overjet: Negative #mm
If the lower incisors are in front of the upper incisors, the condition is called
reverse overjet or anterior crossbite. (Proffit 7)
Anterior cross bites can display a _________ of mm for overjet? - correct answers
range
What dental notation is used for primary teeth in orthodontics? - correct answers
Primary Palmer notation
What dental notation is used for permanent teeth in orthodontics? - correct
answers Permanent Palmer notation
Mixed dentition - correct answers Begins when the 6 year molar erupts
Lasts until the last primary tooth is exfoliated
Early Mixed Dentition - correct answers Permanent First Molars and the 8 anterior
incisors are present
Late Mixed Dentition - correct answers Only the Second Primary Molars (E's) are
present and possibly Maxillary Primary Canines
, How is the vertical relationship of the anterior teeth measured? - correct answers
Measured as a percentage or mm
Anterior open bite is going to have what percent vertical relationship
measurement? - correct answers 0%
100% vertical relationship would be considered a _________ bite. - correct
answers Deep
How is the vertical relationship for class III bite measured? - correct answers The
same as if the maxillary teeth were anterior to the mandibular. You will still
measure the percent of overlap between the two the same way.
Deep curve of spee, what can it signify? - correct answers Crowding of teeth can
be masked by a deep curve of spee
Flat curve of spee - correct answers
Transverse relationship of teeth: posterior crossbite - correct answers It can
involve a Single tooth or many
It can be Bilateral or unilateral
It can be due to Maxillary Constriction
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