Journal of Forensic Research

The history of pink teeth phenomenon [PTP] dates back to 1829 when it was first described by Bell. Thereafter a number of publications were made on this topic. Initial observations on pink teeth tend to correlate it with asphyxial deaths, especially drowning and strangulation. However with the passage of time, the phenomenon was also observed in non asphyxial and unknown causes of death. On account of nonspecific nature and unclear mechanisms, the finding, however, gradually lost it medico-legal acumen. The basic process behind post-mortem pink teeth is congestion/ hyperemia of pulp capillaries followed by hemolysis causing hemoglobin release where after its subsequent diffusion into dentinal tubules stains them pink. The process, as stated, requires humid and moist surroundings along with a prolonged postmortem interval, so the majorities of the
cases belong to putrefied and drowned corpses that frequently depict adipocere formation too. One reason behind this is the head down position of submerged cases which predisposes them to a strong cranial congestion especially in the areas of declivous lividity. A minimum time of one week has been suggested for the first appearance of pink coloration. After a thorough review of literature, including the recent ones and from our own observations, the association of pink teeth in certain asphyxial deaths, particularly fatal neck pressures like strangulation and hangings, appears to be reemerging. Furthermore the cases depicted in the text have substantiated the truth of Clark and Law (4) that an invariable allocation of the hypostatic congestion to the pink teeth formation is not justified, although due to scarcity of enough case material and literature, a definite opinion
cannot be put straightforward.

Objectives: The soft palate is known as velum or muscular palate, a posterior fibromuscular part of palate that is attached to posterior edge of hard palate. Functions of soft palate are sucking, swallowing and pronunciation. The classification system of soft palate can be important for the assessment of velopharyngeal closure and in diagnosing obstructive sleep apnea individuals. Considering this, the present study was done to investigate the variation in the morphology of the soft palate. Materials and Methods: A total of 200 patients belonging to both the genders, in the age group 18-50 years, were selected from the outpatients visiting the Department of Oral Medicine and Radiology. All the study samples were subjected to lateral cephalogram and the morphology of the soft palate was categorized as described by You et al. The data obtained were tabulated and subjected to statistical analysis. Results: The morphology of soft palate was categorized into six types. Type 2 was the commonest type observed. The relationship between the different types of soft palate in various age groups was
found to be non-significant. 2% of the subjects were having type 5 or’ s’ shaped soft palate can have high risk of obstructive sleep apnea. Conclusion: This radiographic classification of morphologic variants of soft palate can be used as reference for the research in individuals with obstructive sleep apnea syndrome

Background: Forensic facial reconstruction (FFR) is a mixture of science and art, as it attempts to re-establish the contours of the soft tissues over the skull. From a forensic point of view, identification of an unknown body relies heavily on this visual aspect of recognition. Accurate facial soft tissue thickness data are essential for acceptable results.
Facial reconstruction (FR) relies on the relationships between the facial features, subcutaneous soft tissues and underlying bony structure of the skull. If impossible to compare questioned remains with possible familiar material, in such cases one of the last chances is to recreate ante mortem appearance is by FR.
Within forensic anthropology facial reconstruction is employed when all other alternatives are unsuccessful, thus it is a last resort employed in the anticipation that someone, somewhere, will be able to identify the deceased and offer clues to law enforcement investigators which ultimately lead to an arrest.
Aims & objectives:
Material & Method: The study was conducted among patients of Kanpur district reporting to the dental OPD of Rama Dental College Hospital and Research Center, Kanpur, Uttar Pradesh. In this study, lateral cephalometric radiographs of 100 healthy individuals were taken for 50 North Indian males and 50 North Indian females. All of them were aged between 15 and 40 years. Ethical approval was obtained from the ethical committee of Rama Dental College Hospital and Research Center, Kanpur, Uttar Pradesh.
Results: Student’s t-test was applied to assess association between facial parameters and gender. The p-value of <0.05 was considered to be statistically significant. Of all the parameters, facial angle, upper lip curvature, Nose tip to H-line, and Upper lip sulcus did not show any statistical association between male and female groups. Skeletal convexity Pta, H-angle, and Lower lip to H-line was found to be greater in females than males and the difference was statistically significant. Upper lip strain, upper lip thickness, lower sulcus depth, and soft tissue chin thickness were parameters that had greater values in males as compared to females and this difference was also found to be statistically significant.
ANOVA test was applied to assess the facial parameters between the age categories. The facial angle was reported highest in the 31-35 years age group and lowest in 21-25 years age group. However the difference in facial angle values was not statistically significant between the age groups. The remaining parameters showed a statistically significant difference between age groups and so a post hoc test was applied to present the association between each age groupin the individual parameters. The post hoc test is presented and explained below.
Difference in Upper lip curvature was statistically significant between 15- 20 age group with 26-30 and 31-35 age groups, 21-25 with 36-40 age groups. H-angle was found to be statistically different between 15-20 and 31-35 years age group, 21-25 and 31-35 age group and 26-30 and 31-35 age groups. The upper lip thickness was found to be statistically different between 15-20 and 26-30 age group, 15-20 and 36-40 age group, 21-25 and 36-40 age groups. The upper lip strain was markedly significant when age groups 15-20 and 26-30, 21-25 and 26-30, 26-30 and 36-40 age groups were compared. The difference between lower lip to H-line was statistically significant between 15- 20 age groups versus all other groups, 21-25 versus 31-35 and 36-40 age groups, and 26-30 and 31-35 age groups. Also, in soft tissue chin thickness, statistically significant differences were found between age groups 15-20 and 26-30, 31-35 and 21-25 with 26-30, 31-35, 26-40 and between 26-30 and 36-40 age groups
ANOVA test was applied to assess the facial parameters and their association among the different groups as categorized by BMI categories. Of all the parameters, Facial angle, Upper lip strain and lower sulcus depth did not present any statistical variation as per BMI. The remaining parameters where BMI categories showed statistically significant difference between each other were further analysed by using post hoc test and is presented below.
Post hoc analysis for Upper lip curvature showed significant difference in <18.5 BMI and 25-29.9, 35-39.9 and30-34.9 with 18.5–24.9, 25-29.9 and 35-39.9. Skeletal convexity Pta differed significantly in <18.5 with25-29.9 and 35-39.9with 18.5–24.9 and 30-34.9. BMI categories showed statistical difference between all categories except between 18.5–24.9 and 25-29.9, 30-34.9 BMI and 30-34.9 with 35-39.9 in case of H-angle. Nose tip to H line was statistically different for 35-39.9 with all other categories. Upper lip sulcus was found to be different in 35-39.9 BMI to all other categories and additionally <18.5 BMI was also different from 18.5–24.9 and 25-29.9. Upper lip thickness was measured to be statistically different for 25-29.9 BMI with <18 and 30-34.9, while 35-39.9 BMI differed with <18, 18.5–24.9and 30-34.9. Lower
lip thickness was statistically variable only between<18.5 and 35-39.9. Lastly, soft tissue thickness showed a significant difference in BMI for<18 and 18.5–24.9 with 25-29.9 and 35-39.9 BMI respectively.
Conclusion: In our study of all the parameters, facial angle, upper lip curvature, Nose tip to H-line, and Upper lip sulcus did not show any statistical association between male and female groups. Skeletal convexity Pt A, H-angle, and Lower lip to H-line was found to be greater in females than males and the difference was statistically significant. Upper lip strain, upper lip thickness, lower sulcus depth, and soft tissue chin thickness were parameters that had greater values in males as compared to females and this difference was also found to be statistically significant.
This study focused on evaluating soft tissue profile of Kanpur individuals according to Holdaway analysis. The results revealed that some measurements were different from those proposed by Holdaway including; facial angle, H angle, upper lip curvature, nose tip to H line and upper lip sulcus. These differences disclose the importance of using normative data established for Kanpur population in forensic reconstruction.
After analysing the effect of BMI on facial soft tissue thicknesses, this study states that the nutritional status of the individuals is an important factor to consider during facial reconstruction from skulls, as well as in studies on soft tissue thicknesses.

Prepared canines are inconceivable compound sensors, much better at recognizing explosives, opiates and different substances than even the most progressive innovative gadget. In any case, one test is that canines must be prepared, and preparing them with genuine risky substances can be badly designed and perilous.
NIST researchers have been attempting to tackle this issue utilizing a jello-like material called polydimethylsiloxane, or PDMS for short. PDMS retains scents and deliveries them gradually after some time. Wall it in a holder with a hazardous or opiate for half a month until it retains the smells, and you would then be able to utilize it to securely prepare canines to identify the genuine article.
Yet, half a month is quite a while, and now, NIST specialists have built up a quicker method to inject PDMS with fumes. In the diary Forensic Chemistry, they depict warming mixes found in explosives, making them discharge fumes all the more immediately, at that point catching those fumes with PDMS that is kept up at a cooler temperature, which permits it to retain fumes all the more promptly. This two-temperature strategy slice the time it took to "charge" PDMS preparing helps from half a month to a couple of days.

An exploratory finger impression recognition approach can distinguish hints of cocaine on human skin, even after somebody has washed their hands - and the test is likewise savvy enough to tell whether an individual has really burned-through the class A medication, or basically dealt with it.
A viable, financially open finger impression drug screening system, using flat stream test advancement and fluorescence-stamped antibodies to explicitly distinguish express meds or their metabolites in eccrine sweat accumulated from fingerprints, is as of now available for motivation behind consideration use from Intelligent Fingerprinting - who furthermore offer a finger impression based examination community insistence organization which uses Liquid Chromatography Mass Spectrometry methods.
The gathering, from University of Surrey, Forensic Science Ireland, National Physical Laboratory and Intelligent Fingerprinting, took fingerprints from people searching for treatment at drug recuperation focuses who had vouched for taking cocaine during the previous 24 hours. Fingerprints were accumulated from each patient, and the individuals were then drawn closer to wash their hands through and through with chemical and water before giving another game plan of fingerprints. This identical cycle was used to accumulate tests from a pool of medicine non-customers who had reached street cocaine.