Comparative analysis between dactyloscopy and rugoscopy

ABSTRACT

Records form the evolutional history show primitive attempts of human individualization by hand printingon cave walls. Later, still under the need of differentiating among other animals, the ancestral used developedprocesses for personal identification. Nowadays, the human individualization continues based on unique morphological characteristics. This study aims to analyze the correlation between the fingerprints and the palatal rugae. A sample of 93 patients, out of 100, aged between 18 and 35 years, was selected. Fingerprintswere collected by impression on paper, and palatal rugae were registered through intra-oral photography.The Vucetich’s method was applied for the fingerprints analysis and the Carrea’s method was utilized for theanalysis on palatal rugae. Frequency of distribution was applied to describe the incidence of fingerprints andpalatal rugae patterns. The Chi-square test was used for correlation analysis between the two variables. Theexternal clip was the most common pattern among fingerprints on the right hand (48,39%), on the oppositeside the internal clip had major incidence (50,54%). The pattern type IV was observed as the most commonamong the palatal rugae (42,55%). The Chi-square test demonstrated significant result only when correlatedright and left hands. No statistical correlation was found involving palatal rugae. It is possible to concludethat genetic intervention is the main factor to explain relevant results on correlations between opposite hands.Considering the absence of previous studies in the literature, this research aims to provide initial support forfurther investigations.