FINAL PROGRAM - The American Academy of Dental Sleep Medicine

Abstracts
the Sleep Apnea Dental Clinic from 2005 to 2010, male OSA
patients were recruited. As per routine clinical protocol for
each patient, an upright lateral cephalogram was undertaken
to evaluate maxillomandibular dimensions and tongue size
while study models were fabricated for an analysis of dental
arches. Seven out of 409 patients previously experienced
orthodontic treatment with extractions of four premolars (14,
24, 34 or 35, 44 or 45) during their teens. One patient with
nalcorepsy was excluded. After matching age, body mass
index, and the maxillomandibular dimensions, 6 patients w/
PEs and 6 patients without a history of orthodontic treatment
(controls) were selected for analysis. Sagittal tongue size,
both upper and lower dental arch width (distance between
right and left first molars) and length (distance from the
incisal edge of the central incisors to the line that passes
through the distal edge of the first molars), and the apneahypopnea
index (AHI) were compared between the groups
using unpaired t-tests.
Results: The mean age of the subjects w/PEs and controls
was 41.5±11.3 and 42.3±12.5 years, respectively. No
difference was found with respect to tongue size in addition
to upper and lower dental arch lengths between the groups.
However, the upper (w/PEs : controls = 33.2±2.6mm
: 39.6±2.8mm, p