"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.
A BSTRACT Aim: The main purpose of the study was to learn the possible shade differences between human eye and the digital method with spectrophotometric methods. Materials and Methods: Fifty dental students of age groups 18–25 with maxillary right central incisor after undergoing oral prophylaxis were included in this study. Before undergoing shade selection, standardization protocol was followed. The shade of the right maxillary central incisor was determined by using the following methods: visual, spectrophotometer, and digital photography. The shades obtained by both spectrophotometer and visual methods are compared and similarly L *, a *, and b * values obtained by both spectrophotometer and digital methods are compared. Finally these comparisons are subjected to statistical analysis. Results: Z and P values of digital and spectrophotometric methods were found to be statistically significant. Tooth shade selected between spectrophotometric and visual method was analyzed by using chi-square test, which shows highly significant value. Conclusion: It was concluded that the digital photography can be used as one of the reliable methods for shade selection in a clinical setup.
Introduction: Success or failure of dental implants depends on the amount of stress transferred to the surrounding bone. Increased amount of loading to the bone through implant cause failure, whereas decrease in the amount of loading to the bone causes improved success rate of implants. Biomechanical interaction between implant and bone decides the long-term function or prognosis of dental implant system. Aim and Objectives: The aims of this study were to evaluate the influence of implant length and diameter on stress distribution, to understand the stress distribution around bone–implant interface, and to understand the response of bone under axial and non-axial loading conditions. Materials and Methods: Finite element three-dimensional mandibular model was made using cone beam computed tomography of patient with completely edentulous mandible, and in that model five posterior bone segments were selected. NobelReplace Select Tapered implants with diameters and lengths 3.5 × 10 mm, 4.3 × 10 mm, 3.5 × 11.5 mm, and 4.3 × 11.5 mm, respectively were selected and three dimensionally modeled using Creo 2.0 Parametric Pro/E software. Bone and implant models were assembled as 20 models and finite element analysis was performed using ANSYS Workbench v17.0 under axial and non-axial loads. Result: Under axial and non-axial loads, 3.5 × 10 mm implant showed maximum von Mises stress and strain in both cortical and cancellous bone whereas implant with diameter and length 4.3 × 11.5 mm showed minimum von Mises stress and strain in both cortical and cancellous bone. Conclusion: In axial and non-axial loads, amount of stress distribution around implant–bone interface is influenced by diameter and length of implant in cortical and cancellous bone, respectively. Increased diameter of the implant produces the minimum stress in cortical bone. Increased length of the implant produces the minimum stress in cancellous bone.
Aims: This study aims to explore the awareness among the interns regarding the jaw relation procedures. Jaw relation is one of the most important criteria for the fabrication of complete dentures to provide a satisfactory oral function for the aging population. Settings and Design: The study design was a descriptive survey. Materials and Methods: A self-administered questionnaire was designed and distributed among 202 interns in three different colleges in Salem and Namakkal in Tamil Nadu using Stratified Proportionate Random Sampling Technique. The survey included a questionnaire with ten questions to assess the knowledge and awareness of jaw relation procedures among the interns. Statistical Analysis Used: The statistical tools used to analyze the levels of awareness among the interns were frequencies and percentage analysis. Chi-square tests and logistic regression were used to investigate the relationship between awareness among interns, with respect to gender, age, and complete dentures done, with the level of significance at P < 0.05 using Microsoft Excel and SPSS software version 23. Results: The awareness prevalent regarding jaw relation and its procedures among the respondents was 83%. There was a statistically significant relationship between maximum complete dentures done and awareness among interns (P < 0.001). Complete dentures made a significant contribution to the prediction of awareness (P < 0.0001). Conclusion: To improve the awareness among the interns increased educational programs, clinical training and greater patient exposure to the clinical application of jaw relation procedures to construct complete dentures are needed during their undergraduate education.
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