[An introduction to forensic dentistry. Forensic dentistry can be defined as the dental discipline applied to the needs of justice].
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Forensic dentistry has become an integral part of forensic medicine over the past 100 years. This has been due to the dedication of people like Amoedo, Gustafson, Sognaes, Keiser-Nielsen and Suzuki, to name but a few. They established the essential role which forensic dentistry plays mainly in the identification of human remains. Dental hard tissues are extremely resistant to fire and are usually the only remains after an extended period of burial. If antemortem dental records are available for an individual then dental identification is as certain as those of fingerprints. In South Africa forensic dentistry had its beginning in 1969 during the Windhoek air disaster. Since then there have been several cases of interest throughout the country, one of which was the crash of the Helderberg off the coast of Mauritius. Other aspects of forensic dentistry are the examination of bite marks and the recognition of facial trauma especially in cases of child abuse; the determination of age, sex and race of skeletal remains; dental ethics and jurisprudence as well as malpractice also form part of the duties of the forensic dentist. The five dental schools in South Africa each have a forensic team which is consulted on a regular basis by forensic pathologists and district surgeons. Forensic dentists are active members of the medicolegal team and should be consulted on a regular basis especially in cases where identification is concerned.
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Since the late 1890s, forensic odontology has gradually established itself as important, often indispensable, in medicolegal cases, in particular for identification of the dead. The specialty of forensic dentistry generally covers three basic areas, namely, (1) identifications human remains, (2) litigation relating to malpractice, and (3) criminal proceedings, primarily in the areas of bite-mark evaluation and child abuse. Much of its expertise is based on clinical experience, fundamental research and advances in knowledge in relation to dentistry in general. Particularly over the past two decades, there has also been increasing research on specific forensic dental matters. In this paper, the methods of identification used in forensic dentistry are reviewed, and their application in two areas, mass disasters and bite-mark analysis is discussed. Progress in this field in Finland has been relatively slow. It has depended as in other countries on development of training and research facilities in the dental schools, and oral pathology departments.
The use of computers in forensic dentistry has mirrored the use of computers in dentistry in general. There has been a rapid acceptance and use of computers for management of all front-office and many clinical procedures. Their use has presented new tools for solving difficult forensic problems and has created new concerns regarding their application in general dentistry. The accepted uses of computers in dentistry and forensic dentistry are presented along with suggestions for future directions.
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Forensic dental identification is at technological cross roads. The incidence of dental restorations, the mainstay of radiographic dental investigations, have declined. Whereas molecular biology laboratory procedures are rapidly increasing in efficiency and availability. With new typing techniques forensic scientists can characterize individuals at the fundamental level of their DNA, and variations between individuals at this level can be used to discriminated between them. The anatomical location of teeth and the extent to which teeth may suffer environmental changes and still provide useful DNA material has propelled forensic odontology. The techniques of DNS fingerprinting, the role of teeth as a source of DNA material and its feasibility is discussed in relatively simple terms.