Pacific Coast Society of Orthodontists Bulletin Winter 2017 - 41
Case Report
How would you treat this malocclusion?
Pre-Treatment
Case M.S. 23 years, 8 months
A video of this case can be found
at www.pcsortho.org.
Extraoral and Intraoral Findings
The patient presents to the Arizona School of
Dentistry & Oral Health Postgraduate Orthodontic Program (ASDOH-POP) for a consultation; her
chief concern is crowded teeth. She is in good
health with a non-contributory medical history.
Her dental history includes root canal therapy
and porcelain crowns on both of the maxillary
central incisors. She has good oral hygiene.
3 mm and the overjet is 3 mm. Her maxillary left
second premolar and first molar are in lingual
crossbite. Her maxillary dental midline is 2 mm to
the right of her facial midline, and her mandibular dental midline is 4 mm to the right. There is
5 mm of crowding in the maxillary arch and
6 mm of crowding in the mandibular arch. There
is also a Bolton discrepancy with mandibular
anterior excess. She has a mild curve of Spee.
The patient has a well-balanced, symmetrical
face with a straight profile and a prominent chin
button. She has normal facial proportions, 90°
nasolabial angle, competent and retrusive lips,
with the lower lip 7.3 mm behind the E-line and
the upper lip 9.3 mm behind the E-line. She has
end-on Class II molar and canine occlusion. On
her maxillary central incisors, the overbite is
Radiographic Findings
A panoramic radiograph extracted from full volume cone-beam computed tomography (CBCT)
shows all of the patient's permanent teeth to be
present other than her third molars, which were
previously extracted. Lateral cephalometric analysis reveals a low mandibular plane angle, which
is illustrated by the FMA of 17.8°. The patient has
Initial photos
23 years, 8 months
Winter 2017 PCSO Bulletin
41
http://www.pcsortho.org
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Pacific Coast Society of Orthodontists Bulletin Winter 2017 - 40
Pacific Coast Society of Orthodontists Bulletin Winter 2017 - 41
Pacific Coast Society of Orthodontists Bulletin Winter 2017 - 42
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Pacific Coast Society of Orthodontists Bulletin Winter 2017 - 49
Pacific Coast Society of Orthodontists Bulletin Winter 2017 - 50
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Pacific Coast Society of Orthodontists Bulletin Winter 2017 - 53
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Pacific Coast Society of Orthodontists Bulletin Winter 2017 - 75
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