RESUMO
Context: Palm prints formed once does not change throughout life and is not influenced by environment. Palmar Dermatoglyphics can indicate the development of potentially malignant and malignant lesions and help in identifying persons at high risk of developing Oral submucous fibrosis (OSMF) and Oral squamous cell carcinoma (OSSC). Aim: To analyze the qualitative [finger ridge pattern and presence or absence of hypothenar pattern] and quantitative [mean ATD angle and total AB ridge count] variations in Palmar Dermatoglyphics in patients suffering from OSMF and OSCC. Settings and Design: A prospective comparative study among 40 patients (Group I-10 samples of smokeless tobacco users with OSMF, Group II- 10 samples of smokeless tobacco users with OSCC, GroupIII- 10 samples of smokeless tobacco users without OSMF or OSCC and GroupIV- 10 samples without smokeless tobacco habit without OSMF and OSCC as controls) were selected. Materials and Methods: The palm prints were recorded using an HP inkjet scanner. The patients were asked to place the palm gently on the scanner with the fingers wide apart from each other. The images of the palm prints were edited and qualitative and quantitative analysis were done. Statistical Analysis Used: Statistical analysis such as Kruskal Wallis, Post Hoc and Analysis of Varience were done. Results: A highly significant difference among the finger ridge, hypothenar pattern and mean ATD angle (P<0.001) and total AB ridge count (P=0.005) in OSMF and OSCC patients were obtained. There is predominance of arches and loops, presence of hypothenar pattern, decrease in mean ATD angle and total AB ridge count in OSMF and Oral Cancer patients. Conclusion: Palmar Dermatoglyphics can predict the probable occurrence of OSMF and OSCC in smokelees tobacco users.
RESUMO
American population consists of people of various race and ethnic group. Palm prints are different from each individual, ethnic group and race. The aim of this study is to investigate influencing anthropometric values to atd angles formed by triradii of palm prints in European American and develop a regression equation that can predict atd angle. This study was done on 208 European American (males: 102 individuals, females: 106 individuals). Data were collected by measuring atd angles using a protractor, distance from triradii a to d, length from triradius t to the distal wrist crease (DWC), palm breadth at metacarpals and palm length perpendicular using digital callipers. The data were analyzed by descriptive statistics, the frequency, independent sample t-test, paired t-test, Pearson correlation analysis, stepwise regression using SPSS win 18.0. This study showed that atd angles of males (38.6degrees) are significantly smaller than those of females (40.4degrees). Influencing anthropometric values to atd angles in males were distance from triradii a to d, the ratio of the length from triradius t to the DWC to palm length, palm length. Influencing anthropometric values to atd angles in females were the ratio of the length from triradius t to the DWC to palm length, the ratio of the distance from triradii a to d to palm breadth, and the ratio of palm breadth to palm length. In addition to, the regression equation predicted atd angle of males was 26.150+(0.741xdistance from triradii a to d)+(52.856xthe ratio of the length from triradius t to the DWC to palm length)-(0.332xpalm length), on the other hand, that of females was -42.935+(51.657xthe ratio of the length from triradius t to the DWC to palm length)+(63.314xthe ratio of the distance from triradii a to d to palm breadth)+(42.764xthe ratio of palm breadth to palm length). The results of this study suggest that there were differences in influencing anthropometric values to atd angles between males and females in European American. Especially, the ratio of the length from triradius t to DWC to palm length was a very significantly influencing anthropometric value to atd angles to all of males and females.