Correlation between dermatoglyphics, dental caries and salivary pH: an invivo study

BACKGROUND: Dermatoglyphic patterns that are often utilized in judicial and legal investigations are valuable in diagnosis of many diseases related to genetic disorders. Caries, being infectious in origin, might be related to genetics as well. Hence, these patterns are of significance in predicting caries development. MATERIALS AND METHODS: DMFT (decayed, missing, filled teeth) score of 300 female subjects within the age group 0f 18-25 years were recorded and accordingly divided into 3 groups of 100 each; group 1 (DMFT score=0), group 2 (DMFT score < 5) and group 3 (DMFT score ≥ 5). Dermatoglyphic patterns were recorded using Cummins and Midlo method. pH meter was used for recording salivary pH accurately. Fingerprint patterns and salivary pH recorded were correlated with DMFT scores of subject and control groups. Statistical analysis was performed using ANOVA and Chi-square tests (P < 0.05). RESULTS: The mean salivary pH was least in group 3. The predominant dermatoglyphic pattern observed in groups 1 and 2 was loop pattern whereas, in group 3, whorl pattern was predominant. The TFRC (total finger ridge count) was higher in group 3 compared to the other two groups. CONCLUSION: Caries-free people showed inflated frequency of loops, whereas subjects with high decay score had additional share of whorls. The TFRC was higher in individuals with high DMFT score, and salivary pH was inversely proportional to the DMFT score

Fingerprint Patterns in Relation to Gender and Blood Group among Students of Delta State University; Abraka; Nigeria

Introduction: Fingerprint patterns are genotypically determined and remain unchanged from birth till death. Purpose of the study: The purpose of this study was to determine fingerprint patterns in relation to gender and blood group among students of Delta state University; Abraka; Nigeria. Materials and Methods: A total of 490 subjects; aged 17-30 years were drawn using the systematic random sampling technique. The blood group of each subject was obtained from the records in the medical laboratory register of the Health Centre of the University. Results: Fingerprints of each subject were obtained using endorsing ink and plain white paper. Female had higher percentage of loop and whorl while male had higher percentage of arch. There was no significant association between gender and finger print patterns. Within the respective ABO blood groups; loop had higher percentages compared to arch and whorl. There was no significant association between finger print patterns and ABO blood group. Within the respective Rhesus blood groups; loop had higher percentages compared to arch and whorl. There was significant association between finger print patterns and Rhesus blood group. Within the respective ABO-Rhesus blood groups; loop had higher percentages compared to arch and whorl; except in blood group O negative where whorl has higher percentage. There was significant association between finger print patterns and ABO-Rhesus blood group. Conclusion: The study showed that fingerprints; gender and ABO blood groups can only be used independently to identify an individual

Sex Determination from Fingerprint Ridge Density

This study was conducted with an aim to establish a relationship between sex and fingerprint ridge density. The fingerprints were taken from 500 subjects (250 males and 250 females) in the age group of 18-60 years. After taking fingerprints; the ridges were counted in the upper portion of the radial border of each print for all ten fingers and mean value was calculated. The results have shown that a finger print ridge of 13 ridges/25 mm2 is more likely of male origin and finger print ridge of 14 ridges/25 mm2 is more likely of female origin. It has been successful to support the hypothesis that women tend to have a statistically significant greater ridge density than men

Digital Dermatoglyphics In students Of Delta State University; Nigeria

Dermatoglyphic studies have established that palmer and digital ridges form well defined patterns exhibiting traits that are genetically determined; appear to be conservative conservative in their evolution and are therefore very reliable for establishing and confirming the historical relationship and within populations. Unilateral thumbprints of 248 students were recorded; studied and classified using standard methods. The results obtained showed that loops were the most predominant pattern type in both sexes followed by whorls and arches. However; no significant differences occurred between sexes in the pattern types (p0.05). This study documents for the first time fingerprint patterns in undergraduates of Delta state university and further confirms findings in other parts of Africa