Clear acrylic resin T-bar used in denture identification

Ryan, Larry D.; Keller, John B.; Rogers, Donald E.; Schaeffer, Lee

doi:10.1016/0022-3913(93)90017-i

Cited by 24 publications

(17 citation statements)

References 10 publications

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“…[1][2][3][4][5][6][7][8] Así mismo la Asociación Dental Americana (ADA) desarrolló un microdisco acrílico (azul para hombre y rosado para mujeres) de unos 3 a 4 milímetros de diámetro, el cual sería cementado en la superficie vestibular del primer molar superior derecho. Este dispositivo tendría grabado un código alfanumérico único que identificaría a cada individuo.…”

Section: Empleo De Dispositivos Para Identificación Odontológicaunclassified

Microchip Rfid Pasivo Implantado en Dientes Molares Sometidos a Altas Temperaturas Con Fines De Identificación Forense

2013

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RESUMENObjetivo: valorar el comportamiento In vitro de un microchip RFID pasivo implantado en molares humanos y sometidos a altas temperaturas para determinar su capacidad de resistencia y funcionamiento. Materiales y métodos: estudio experimental In vitro que evaluó el comportamiento de un microchip RFID pasivo (VeriChip™) implantado en diez molares humanos a través de una restauración en resina (Filtek P90™ Silorane 3M-ESPE ® ) en cavidades oclusales clase I y vestibulares clase V y sometido a altas temperaturas (100 °C, 200 °C, 300 °C, 400 °C y 500 °C), con el fin de determinar su capacidad de resistencia y funcionamiento. Los especímenes fueron observados a través de Fotografía Digital (FD), Estereomicroscopio (EM) y Microscopio Electrónico de Barrido (MEB). Resultados: se observó que los microchips RFID pasivos tienen capacidad de resistir a las altas temperaturas al conservar su integridad macroestructural; sin embargo, se observaron fracturas cohesivas y adhesivas que alteran los mecanismos de adhesión entre los tejidos dentales, la resina y el microchip, y el correcto funcionamiento de este último a partir de los 300 °C. Conclusiones: los microchips RFID pasivos implantados en molares humanos a través de una restauración en resina resisten la acción de las altas temperaturas sin alterar su macroestructura. No obstante, solo funcionaron hasta los 300 °C; lo que, eventualmente, podrá contribuir con los procesos de identificación forense para el caso de cadáveres quemados, carbonizados e incinerados. IMPLANTED PASSIVE RFID MICROCHIPS IN MOLARS SUBJECTED TO HIGH TEMPERATURES WITH FORENSIC IDENTIFICATION PURPOSES ABSTRACTObjective: to assess In vitro behavior of a passive RFID microchip implanted in human molars and subjected to high temperatures to determine their resistance and performance. Methods: an experimental In vitro study was done to evaluate the behavior of a passive RFID microchip (VeriChip™) implanted in 10 human molars with a composite restoration (Filtek P90™ Silorane 3M-ESPE ® ) in class I occlusal cavities and class V vestibular cavities and subjected to high temperatures (100 °C, 200 °C, 300 °C, 400 °C and 500 °C), in order to determine their resistance and performance. The specimens were observed through Digital Photography (DP), Stereomicroscopy (SM) and Scanning Electron Microscopy (SEM). Results: it was observed that passive RFID microchips have capacity to withstand high temperatures maintaining their macrostructural integrity, but they were observed cohesive and adhesive fractures that disrupt the mechanisms of adhesion between the dental tissues, the composite material and the microchip, and impairs its correct operation beyond 300 °C. Conclusions: passive RFID microchips implanted in human molars with a resin restoration resist the action of high temperatures without altering their macrostructure, however they only operated up to 300 °C, which eventually may contribute to the processes of forensic identification in case of burned, charred and incinerated bodies.

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Section: Empleo De Dispositivos Para Identificación Odontológicaunclassified

Microchip Rfid Pasivo Implantado en Dientes Molares Sometidos a Altas Temperaturas Con Fines De Identificación Forense

2013

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“…The mark should be placed in the denture without affecting its retention, esthetics and function. [8] The various denture markers include: Quick Response (QR) Code, where a Code is enclosed into dentures and the code can store a large amount of patient detail; Denture barcoding, which is a machine-readable code of a series of bars and spaces; Lenticular card, which is used to store the patient's information in an image form that can be viewed by changing the angle of view; ID band, a stainless steel metal band representing patient detail; Paper Strip, where a strip of typed onion skin paper is used; T bar, where a T-shaped clear Poly methyl methacrylate resin bar is enclosed into denture with a label;[910] Laser etching, in which a copper vapor laser is used to etch the patient's information on the denture; Electronic microchips, where patient's information is etched onto a microchip measuring 5 × 5 × 0.6 mm which are small, aesthetically acceptable and perform well under high temperatures; Photographs, where a patient's photograph is embedded in the denture but which is resistant only up to 200–300°C; Radio-Frequency Identification (RFID) Tags, in which a (8.5 × 2.2 mm 2 ) radio-frequency identification tag is enclosed within dentures; and Subscriber Identity Module (SIM) inclusion. [11121314] While labeling dentures is of great significance, gaining more knowledge on the reliability of denture markers is important.…”

Section: Introductionmentioning

confidence: 99%

An In vitro evaluation of the reliability of QR code denture labeling technique

Poovannan¹,

Jain²,

Krishnan³

et al. 2016

J Forensic Dent Sci

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Statement of Problem:Positive identification of the dead after accidents and disasters through labeled dentures plays a key role in forensic scenario. A number of denture labeling methods are available, and studies evaluating their reliability under drastic conditions are vital.Aim:This study was conducted to evaluate the reliability of QR (Quick Response) Code labeled at various depths in heat-cured acrylic blocks after acid treatment, heat treatment (burns), and fracture in forensics. It was an in vitro study.Materials and Methods:This study included 160 specimens of heat-cured acrylic blocks (1.8 cm × 1.8 cm) and these were divided into 4 groups (40 samples per group). QR Codes were incorporated in the samples using clear acrylic sheet and they were assessed for reliability under various depths, acid, heat, and fracture. Data were analyzed using Chi-square test, test of proportion.Results:The QR Code inclusion technique was reliable under various depths of acrylic sheet, acid (sulfuric acid 99%, hydrochloric acid 40%) and heat (up to 370°C). Results were variable with fracture of QR Code labeled acrylic blocks.Conclusion:Within the limitations of the study, by analyzing the results, it was clearly indicated that the QR Code technique was reliable under various depths of acrylic sheet, acid, and heat (370°C). Effectiveness varied in fracture and depended on the level of distortion. This study thus suggests that QR Code is an effective and simpler denture labeling method.

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“…[5] Over the years, various methods of denture marking have been reported in the literature. [1346789] These include surface marking and inclusion techniques using metal or non-metal materials, microlabels, and electronic chips. The majority of these techniques may be time-consuming, may not be esthetic, and do not permit the incorporation of a large amount of information.…”

Section: Introductionmentioning

confidence: 99%

Denture identification using unique identification authority of India barcode

Mahoorkar¹,

Jain²

2013

J Forensic Dent Sci

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Over the years, various denture marking systems have been reported in the literature for personal identification. They have been broadly divided into surface marking and inclusion methods. In this technique, patient's unique identification number and barcode printed in the patient's Aadhaar card issued by Unique Identification Authority of India (UIDAI) are used as denture markers. This article describes a simple, quick, and economical method for identification of individual.

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Clear acrylic resin T-bar used in denture identification

Cited by 24 publications

References 10 publications

Microchip Rfid Pasivo Implantado en Dientes Molares Sometidos a Altas Temperaturas Con Fines De Identificación Forense

Microchip Rfid Pasivo Implantado en Dientes Molares Sometidos a Altas Temperaturas Con Fines De Identificación Forense

An In vitro evaluation of the reliability of QR code denture labeling technique

Denture identification using unique identification authority of India barcode

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