Comparative study among dentistry undergraduates and forensic odontology postgraduate students through smile photographs for human identification
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2012-10
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Introduction: The execution of forensic odontology technique for
human identification depends on the existence of dental files produced
ante-mortem (dental records, clinical notes, radiographs or dental
casts). However, when these are not present, other sources of dental
data should be searched, such as photographs of the smile. Objective:
To compare the performance of undergraduates of Dentistry and
postgraduate students of Forensic Odontology to execute human
identification through the analysis of photographs of the smile
based on decisive dental parameters. Material and methods: Forty
Dentistry undergraduates of a School of Dentistry (20 presenting
history of orthodontic treatment and 20 without treatment were
photographed as follows: 1) extraoral photograph of posed smile,
at frontal position and; 2) intraoral photograph, at frontal position.
Using these 40 pairs of photographs, four tests were prepared (A, B,
C and D) which were sent to both 12 undergraduates of Dentistry and
12 postgraduate students of Forensic Odontology both from another School of Dentistry. The examiners should analyze and correlate a
picture randomly and previously selected (photograph of the smile or
intraoral photograph) with its corresponding one (photograph of the
smile or intraoral photograph), which was set in a showcase composed
by 10 images, by pointing out the main criteria for reaching a final
conclusion. Results: All the subjects of the research, in both groups,
correctly answered to test A (analysis of a photograph of the smile
in a group of 10 intraoral photographs). The tests B (analysis of an
intraoral photograph in a group of 10 photographs of the smile) and
D (analysis of a photograph of the smile in a group of 10 intraoral
photographs) had 91.6% success among postgraduate students;
and test C (analysis of an intraoral photograph in a group of 10
photographs of the smile) had 83.3% success among undergraduate
students. Conclusion: Among the most relevant parameters to achieve
the result of Forensic dentistry identification through the analysis
of photographs of the smile, the morphology of the incisal edges of
anterior teeth was the aspect most often cited by both undergraduate
students (83.3%) and postgraduate students (72.9%), within the 48
tests applied to each group. Most of the Dentistry undergraduates and
Forensic Odontology postgraduate students were capable of performing
the human identification through the analysis of photographs of the
smile, considering the wide variety of potentially demonstrable dental
characteristics of the anterior teeth.
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Palavras-chave
Forensic dentistry, Human identification, Smiling
Citação
SILVA, Rhonan Ferreira da et al. Comparative study among dentistry undergraduates and forensic odontology postgraduate students through smile photographs for human identification. RSBO: revista sul-brasileira de odontologia, Joinville, v. 9, n. 4, p. 407-415, 2012.