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2008, The Journal of forensic odonto-stomatology
Dental implants for prosthetic rehabilitation with fixed crown or mobile partial/total dentures is a very common oral treatment among the population in Italy as elsewhere. There is a great number of implant systems of different designs. However, a catalogue of radiographic images and a description of the dental implants available in Italy would be useful in order to identify the manufacturer and the type of implant encountered in forensic casework. When an unidentified body is found with one or more implants in the jaws, and no dental record is available, clues gleaned from the type of implants used could give direction to the investigation. In this study Italian implant manufactures were contacted and asked to provide specimen implants. Digital radiographs were taken of all the implants donated at 0º, 30º, and 60º horizontal rotation, combined with -20º, -10º, 0º, +10º, and +20º vertical inclination relative to the radiographic beam and the X-ray sensor. A total of 15 images per im...
Journal of Forensic Sciences, 2010
This study was undertaken to determine if dental implants can be radiographically differentiated by company type to aid forensic identification of the deceased. Recognition of dental implants on intraoral radiographic images was assessed in a blind study using a radiographic examination guide to highlight differences between dental implants. Inter-and intra-examiner comparisons were conducted and a computer program (Implant Recognition System Ò) was evaluated to see whether it improved the accuracy of implant recognition. The study found that dental implants could be radiographically differentiated by company type. The Implant Recognition System Ò in its current form was of little benefit for radiographic assessment of dental implants for forensic odontologists. Prior knowledge of implant types, with a McNemar's statistical value of 92.9, proved to be most significant in identification.
Journal of Forensic Dental Sciences, 2014
International dental …, 2006
To develop computer software to allow general dental practitioners and others to identify unidentified implants in patients' mouths using a range of criteria. Methods: Internet searches for implant manufacturing companies worldwide in all languages using terms: dental implants, dental implant manufacturers and dental implant companies. Once identified, all relevant information including images regarding dental implant products was collected even that for discontinued products. A program was then devised using key design factors to enable identification of individual implants. Results: The searches produced details for 87 implant manufacturers based in 21 countries with 231 different implant designs. The resultant program has been successfully trialled and used in both general dental practice and for forensic identification. Conclusion: The program developed provides a valuable adjunct to the identification of implant systems present in patients' mouths.
Revista Brasileira de Odontologia Legal
A necessidade que implantodontistas conheçam a técnica de identificação humana forense pelos implantes dentais.
Rom J Leg Med, 2010
Dental implants became in the last 15-20 years a very common procedure with minimal risks and a continually decreasing price tag. Dental evidences are one of the most widely used tools in forensic identifications having some obvious advantages: a low cost, human teeth are the best preserved body parts, past dental records are often available, and dental characteristics are unique to each individual. Dental implants, throughout their morphological characteristics give a supplementary layer of evidence during odontological identification, increasing the chances for a positive proof of identity. In this short presentation we will highlight the most useful charactestistics of dental for medical legal practice.
Journal of Indian Academy of Oral Medicine and Radiology, 2011
Automated dental identification system is computer-aided software for the postmortem identification of deceased individuals based on dental characteristics specifically radiographs. This system is receiving increased attention because of the large number of victims encountered in the mass disasters and it is 90% more time saving and accurate than the conventional radiographic methods. This technique is based on the intensity of the overall region of tooth image and therefore it does not necessitate the presence of sharp boundary between the teeth. It provides automated search and matching capabilities for digitized radiographs and photographic dental images and compares the teeth present in multiple digitized dental records in order to access their similarity. This paper highlights the functionality of its components and techniques used in realizing these components.
2020
Background To introduce a theoretical solution to a posteriori describe the pose of a cylindrical dental fixture as appearing on radiographs; to experimentally validate the method described. Methods The pose of a conventional dental implant was described by a triplet of angles (phi-pitch, theta-roll, and psi-yaw) which was calculated throughout vector analysis. Radiographic-and simulated-image obtained with an algorithm were compared to test effectiveness, reproducibility, and accuracy of the method. The length of the dental implant as appearing on the simulated image was calculated by the trigonometric function and then compared with real length as it appeared on a two-dimensional radiograph. Results Twenty radiographs were analyzed for the present in silico and retrospective study. Among 40 fittings, 37 resulted as resolved with residuals ≤1mm. Similar results were obtained for radiographic and simulated implants with absolute errors of-1.1±3.9° for phi;-0.9±4.1° for theta; 0±1.1° for psi. The real and simulated length of the implants appeared to be heavily correlated. Linear dependence was verified by the results of the robust linear regression: 0.9757 (slope), +0.1344mm (intercept), and an adjusted coefficient of determination of 0.9054. Conclusions The method allowed clinicians to calculate, a posteriori, a single real triplet of angles (phi,theta,psi) by analyzing a twodimensional radiograph and to identify cases where standardization of repeated intraoral radiographies was not achieved. The a posteriori standardization of two-dimensional radiographs could allowed the clinicians to minimize the patient's exposure to ionizing radiations for the measurement of marginal bone levels around dental implants. Trial registration The Human Investigation Committee (IRB) of University of Pisa approved present retrospective data analysis (Ethical
Rgo Revista Gaucha De Odontologia Vol 60 N 4 2012, 2013
Human identification is a procedure of great importance for the proceedings instituted in the various spheres of law, and is also required by the community for cultural or religious reasons. Among the processes of identification, the technique of forensic dentistry is a comparative methodology in which it is necessary for the person to be identified to have his dental characteristics recorded in some kind of documentation produced during his lifetime. In this context, panoramic radiographs are extra-oral images often requested by dentists due to the broad view structures of the oral-maxillofacial complex, which assist in obtaining the diagnosis and definition of the treatment plan. In this study, a case of human identification was reported using a panoramic x-ray, produced more than seven years earlier to support the planning of dental treatment. The radiographic comparison was made possible because a post-mortem panoramic x-ray was produced, allowing the viewing of anatomical and reconstructive features with a quality and quantity sufficient to safely establish a positive correlation between the skeletonized corpse and the missing person.
Prague medical report, 2008
The paper deals with an identification of missing persons based on a dental documentation. The procedure of the identification is presented in two case reports with a new possibility of electronic imaging called Dental Cross in comparison with classical dental documentation, which is officially used for identification of the missing persons by Interpol.
Zenodo (CERN European Organization for Nuclear Research), 2023
Purpose: To develop and evaluate the accuracy of a computer-assisted system based on artificial intelligence for detecting and identifying dental implant brands using digital periapical radiographs. Materials and Methods: A total of 1,800 digital periapical radiographs of dental implants from distinct manufacturers acquired from regional implantologists were split into training dataset (n = 1,440 [80%]) and testing dataset (n = 360 [20%]) groups. The images were evaluated by software developed by means of convolutional neural networks (CNN), with the aim of identifying the manufacturer of the dental implants contained in them. Accuracy, sensitivity, specificity, positive and negative predictive values, and the receiver operating characteristic (ROC) curve were calculated for detection and diagnostic performance of the CNN algorithm. Results: At the final epoch (25), system accuracy values of 98.78% were obtained for group training data, 98.36% for group testing data, and 87.29% for validation data. The latter value corresponded to the actual accuracy of carrying out the system learning process. Conclusion: This study demonstrated the effectiveness of CNN for identifying dental implant manufacturers, which was proven to be a precise method of great clinical significance
Journal of Oral Implantology, 2020
2020
Aim: As the number of dental implant patients and implant practitioners is increasing worldwide, implant(s) identification poses a daunting task in absence of detailed records. The purpose of this cross-sectional study was to survey the dental implant practitioners for methods used by them for record-keeping of dental implants and means of implant identification in cases where treatment records are inadequate. A unique Sharma Jhingta Implant identification, numbering, and nomenclature system is proposed to address the need for a universal implant documentation system. Materials and methods: A cross-sectional study was planned. An electronic Google survey form was sent to 150 dentists with questions pertaining to study objectives. The questionnaire had two sections: the first section captured the demographic details of the respondents and the second section had questions on implant systems. It consisted of both open-ended and close-ended questions. Descriptive analysis was done and percentages were calculated for the responses. Results: Responses of 104 implantologists were analyzed. Adin, Nobel Biocare, and Osstem were commonly used implant systems and the majority of clinicians were still using conventional methods of record-keeping namely patient treatment card and clinic record register (77.3% and 86.7%, respectively). Implantologists were facing difficulties in implant identification in previously treated patients and were either using their clinical judgment (72%) or professional colleagues' opinion to identify implants. Implant identification software and apps were not used commonly by respondents. Conclusion: There is a need for a universally accepted standardized method of implant identification numbering and nomenclature. Sharma Jhingta IINN system is an effective and easy to learn method for implant documentation.
Anil, S. and H. S. Al-Ghamdi (2007). "A method of gauging dental radiographs during treatment planning for dental implants." The journal of contemporary dental practice 8(6): 82-88. AIM: The goal of pre-surgical dental implant treatment planning is to position the optimum number and size of implant fixtures to achieve the best restorative results. The purpose of this article is to describe the use of radiographic imaging software to calibrate and measure anatomical landmarks to overcome inherent distortions associated with dental radiographs. The procedure along with its potential use as an adjunct to radiographic interpretation in routine clinical implant practice is presented. BACKGROUND: Diagnostic imaging is an essential component of implant treatment planning, and a variety of advanced imaging modalities have been recommended to assist the dentist in assessing potential sites for implants. Although technological advances have resulted in new imaging innovations for implant dentistry, dental radiography remains the most widely used tool for determining the quantity and quality of alveolar bone as it is a non-invasive procedure. However, the unreliable magnification factor associated with conventional radiographs remains a major problem when estimating the amount of bone available at the implant site. SUMMARY: This image measurement technique is capable of assessing the bone quantity by measuring the height and width of the alveolar crest for a specified region in a two dimensional plane in any direction related to the visible landmarks in the oral cavity. These measurements can be used by the clinician to select the type of implant and its position. Since there is no additional equipment or cost involved, the technique can be used as an important adjunct in implant practice.
Romanian Journal of Legal Medicine, 2017
Fingerprints, DNA, and dentition are the principal markers used for forensic identification. Frequently used dental characteristics for identification include evidence of dental procedures, such as restorations, root canal therapy, crowns, and extractions. The purposes of this preliminary study were to define dental parameters in panoramic radiographs to generate dental patterns for forensic identification, to evaluate intra-and inter-observer effects on the assessment of these parameters, and to determine the optimum number of parameters to be used in dental coding for diversity studies. In total, 11 dental parameters (virgin, missing, filling, crown, defect, residual root, bridge pontic, dental implant, endodontic treatment, impacted, and dental anomaly) were defined and the details of the coding were shown. Based on the definition of the specified parameters, dental patterns were determined from 169 panoramic radiographs. Overall, intra-and inter-observer agreements were 97.48% and 94.48%, respectively. The effects of each parameter on diversity were evaluated. When 4 and 6 base parameters and all 11 parameters were used, the diversities for full dentition were 99.31%, 99.95%, and 99.95% respectively. It was concluded that from panoramic radiographs with the 11 specified parameters, an optimum number of 6 parameters (virgin, missing, filling, crown, defect, and impacted) can be used readily and reliably to study the diversity of dental patterns for forensic identification.
Background-Dental implant use has been increased exponentially over the last decade to support the removable and fixed partial denture prosthesis. Radiographic imaging plays an vital role in the placement of implant and to check the survival of implant. Aim-A survey was conducted on the radiographic prescription practice among the dentist for dental implant assessment. Materials and Methods-100 dentist were interviewed using 11 questions questionnaire related to imaging modalities for both pre-operative and post-operative, particularly related to cost, availability, precision of measurement ,broad coverage of facial bone, enhancement of surgical efficiency during implant surgery , approximate location of vital structure near implant placement site, prescription of bone mapping for implant placement, and any significance difference in dimension when Cone-Beam Computed Tomography (CBCT) compared with ridge mapping. The dentist included in the survey were specialized in Prosthodontics, Oral & maxillofacial surgery and Periodontics with a clinical experience of less than 5 years, 5-10 years and more than 10 years. Data collected through survey was analyzed by statistical package of social science (SPSS version 20 ; Chicago Inc., USA) Result-It was observed that the majority of surveyed 74% dentist prescribe the combination of Orthopantomography (OPG), Cone-Beam Computed Tomography (CBCT), Intra-Oral Periapical Radiography (IOPAR). The main reasons given for prescription was precision of measurement, affect surgical efficiency during placement, availability, facial coverage, cost. Conclusion-The conducted survey showed that the precision of measurement had been emphasized to avoid complication during implant placement by avoiding iatrogenic default.
2021
The book Is complete, condse, comprehensive and easy to read book on the subjects of perlodontologyand oral lmplantology. ett
Abstract: Denture marking is accepted as a means of identifying dentures and persons in geriatric institutions, during war, crimes, and civil unrest, natural and mass disasters, post mortem and medico-legal investigations. This paper reviews the various methods of denture marking and highlights the significance of placing identification marks on dentures. Various methods have been proposed for denture marking but it is important to use a method that is simple, practical, affordable and universally acceptable. Key Words: Denture identification, Forensic odontology, Prosthesis identification.
The Journal of forensic odonto-stomatology, 2011
Minimal dimensional changes in free standing dental implants when incinerated in a kiln to a temperature of 1125°C have been reported previously. However, in the same study colour changes were observed between commercially pure titanium and titanium alloy type of implants, with speculation that this change may be a useful distinguishing tool in cases requiring forensic identification. The present study was instigated to determine what changes occur following cremation to bone-supported dental implants placed within mandibles of sheep. A selection of dental implants was photographed and radiographed. They were then surgically placed in sheep mandibles and the entire sheep heads cremated in a commercial cremator. There was detachment of the dental implants from the mandible, which could have implications for scene recovery. Following retrieval and re-irradiating of the implants, image subtraction evaluation of the radiographs was recorded using Adobe(®) Photoshop.(®) As with the previ...
The Journal of Indian Prosthodontic Society, 2012
Identification through forensic science is an art of giving the corpse a name A real life detective work that would put even Sherlock Homes to shame.'' Forensic dentistry deals with proper handling and examination of dental evidence and proper evaluation and presentation of dental findings in interest of justice. Denture marking or labeling is not a new concept in either Prosthetic or Forensic dentistry and its routine practice has been urged by Forensic dentists internationally for many years. Denture marking is accepted as a means of identifying dentures and persons in geriatric institutions or post mortem during war, crimes, and civil unrest, natural and mass disasters. Prosthodontists are playing very important role in forensic dentistry as they are concerned with fabrication of various prostheses which can serve as an important tool for identification. Identification is essential requirement of any medico-legal investigation because a wrong identity may pose a problem in delivering justice. The main objective of this article is to discuss the various methods of denture marking and to emphasize the importance of denture marking for person identification in medico legal investigations.
Dental Implant Prosthetics, 2015
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