A study of lip prints in relation to gender, family and blood group

Shilpa Patel, Ish Paul, Madhu Sudan Astekar, Gayathri Ramesh, Sowmya G V


Background: In forensic identification, the mouth allows for a myriad of possibilities. The use of lip prints is not so popular but exists as a methodology in forensic science. Hence Dental surgeon has to actively play his role in personal identification and criminal investigation, as his evidence would be very much useful in law and justice. Objective: The objective of present study was to evaluate in depth the lip print patterns in relation to gender, its consistency for a period of time, to ascertain whether there is any hereditary pattern in lip prints among families with siblings and twins, and thereby, to investigate whether the lip prints are unique to any blood group in the population under investigation. Materials and Methods: This study was conducted on 100 students and 10 family with children and twins respectively. The lip-print of each subject was obtained on a microscopic glass slide without applying anything and developed with carbon powder dusting with ostrich brush. Blood group information was noted. Results: Our study showed, in boys, the Type I (complete vertical), in girls, Type II (branched) and among both, type II (branched) lip print pattern to be most prominent pattern. The present study showed a good consistency of the lip print pattern when observed for a period of six months consecutively. The study has not found any statistical correlation of lip print with family members or even any correlation between blood group and lip prints. Conclusion: Although lip print identification has been utilized in the court of law in isolated cases, more research needs to be conducted in this field, with regard to confirmation of its uniqueness. Hence chelioscopy has to be carried out in depth on larger sample size using newer scientific technologies.


Lip print;Period; Blood group;Twins;Family;Chelioscopy;Suzuki;Tsuchiashi

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