Bitemark
analysis is the most complex and controversial area of forensic
odontology.
Consequently, some forensic dentists are reluctant to enter into
this arena.
Bitemarks can occur in a wide variety of substrates, although the
most common
of these is, unfortunately, human skin. The proper documentation
of a
bitemark is not overly complex, and the techniques for collecting
evidence are
manageable by most forensic dentists with practice and attention
to detail.
The bite site can be evaluated in the third dimension by using a
very
accurate dental impression material and dental stones or resins to create
a solid
model for viewing under magnification, light microscopy, or with
scanning
electron microscopy. This three-dimensional model of the bitten
area can
then be compared to suspects’ dental casts. Technique shortcomings
exist and
include that solid models of bitemarks on skin are nonelastic. The
problems
associated with bitemark analysis will be discussed more fully in
Chapter 14.
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