Dental Identification System Research Articles

Classification and numbering of teeth in dental bitewing images

We present an algorithm to classify and assign numbers to teeth in bitewing dental images. The goal is to use the result of this algorithm in an automated dental identification system. We use Bayesian classification to classify the teeth in a bitewing image into molars and premolars and assign an absolute number to each tooth based on the common numbering system used in dentistry. Fourier descriptors of the teeth contours are used as features in the Bayesian classification. After the Bayesian classification, the spatial relation between the two types of teeth is considered to number each tooth and correct the misclassification of some teeth in order to obtain high precision results. Comparison between the two kinds of FDs was done to select the best method for teeth classification. Experiments with 50 bitewing images containing more than 400 teeth show that our method is capable of classifying and assigning absolute index number to the teeth with high accuracy.

A resource guide for practice development through technology

A resource guide for practice development through technology

A forensic dental identification system with error tolerant algorithms and a review of the prevalence of errors occurring in dental records.

After a major disaster, identification of the victims may have to be performed by comparison of the antemortem and post-mortem dental records. Ante-mortem records often contain errors and these must be identified, and compensated for in some way. A computer system for the comparison of large numbers of ante-mortem and post-mortem dental records has been developed, using algorithms which are able to compensate for errors in the records. Data has been collected on the prevalence of errors in dental charts. These were found in 45% of a sample of 50 records. Since matches found by the system may be due to coincidence, a score is computed for each record based on its 'uniqueness'. This allows a confidence limit to be placed on any matches found between the antemortem and post-mortem records.

Identification of children and adults through federal and state dental identification systems: Recognition of human bite marks

Forensic pathologists are often involved in the identification of unknown bodies. It is imperative, therefore, that they become aware of a national computerized identification system (NCIC) administered by the FBI. There is also a state system in California which has resulted in the identification of 59 individuals. This article describes the current methods available for dental identification and indicates the reasons pathologists must rely on odontologists. A brief description of human bite marks and their usual locations is also included, since forensic pathologists often encounter such important evidence during an autopsy.

Computerised dental identification system

Computerised dental identification system