The Journal
A test that studied the relative contributions of
specific cephalometric measurements to
obstructive sleep apnea severity revealed that
extended and forward natural head posture,
lower hyoid bone position, increased soft palate
and tongue dimension and decreased airway
dimension had higher association with
obstructive sleep apnea severity 43 .
A study was done (Ozbek; 1998) to assess the
change in oropharyngeal airway dimensions
due to functional orthopedic treatment in
skeletal class II cases. It suggested that the
oropharyngeal airway dimension increases in
certain skeletal class II growing subjects when
treated with functional appliance 43 .
A review of all the available evidence for
orthodontic relevance of nasorespiratory
obstruction and its effect on facial growth
suggested that more rigorous criteria is
required to gain a more rational approach to
treatment recommendations (Katherine
45
;1998) .
Two auxiliary methods of diagnosing
nasopharyngeal airway obstruction were
compared (Daniel, Felho; 2001). 46
Fig 10 : Nasopharyngeal videoendoscopy; A- Normal turbinates; B-Medium hypertrophy;
C-Severe hypertrophy
44
Vol. 14 No. 2
May-August 2018