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Postero anterior cephalometric analysis /certified fixed orthodontic courses by Indian dental academy
USES AND LIMITATIONS.
SVANHOLT AND SOLOW ANALYSIS.
INDIAN DENTAL ACADEMY
Leader in continuing Dental Education
Since the advent of cephalometric radiography,
orthodontists have focused on the lateral x-ray as their
primary source of patient skeletal and dentoalveolar
data.However, the frontal view also contain valuable
information for diagnosis and treatment planning
Various dental and skeletal widths and skeletal
asymmetries that are not available from the lateral
cephalograms can be quantified from a frontal
CEPHALOMETRIC USES &
They evaluate craniofacial skeleton by means of
linear absolute measurements of:
Width or height.
Different structures of cranio-facial complex can
also be analyzed using qualitative methods.
A postero-anterior cephalograms evaluates the
vertical, transverse and sagittal dimensions of
Different structures can be evaluated w.r.t their
vertical dimension, position and proportionality.
Vertical asymmetry can be easily detected by
connecting bilateral structures, drawing
transverse planes, and by observing their
relative orientation(Sollar,1947, Proffit, 1991).
The use of ratios in postero-anterior
cephalograms can help compare different
persons or groups whose radiographs have
been taken with uncontrolled enlargement of
different structures of skull on X-ray film
(Athanasiou et al, 1992)
Precise linear measurements on postero-anterior
cephalograms may be misleading. eg. The apparent
distance will be affected by a tilt of the head in the head
Angular measurements can also be influenced in an
Diagnostic interpretation of ratios for clinical applications in
individual cases is difficult.