1/29/2024 0 Comments Impression evidence prints![]() Specifically, we searched for work with the keywords lip print*, cheiloscopy*, latent*, or lip print* in any field this produced 127 results (January 2000 – August 2019). We searched two electronic databases, Scopus and Web of Science, for peer-reviewed articles that are relevant to LP enhancement techniques. This paper reviews the enhancement techniques employed in cheiloscopy, identifies challenges and gaps in existing methods and provides a perspective on future research. Įffective LP analysis, as a forensic investigative tool, requires a continued refinement of existing methods and developing new robust techniques. Enhancement of latent LPs relies on the reaction of sweat and sebum constituents deposited on surfaces with chemical agents. Latent LPs are common because of increased use of so-called transfer-resistant or permanent lipsticks, and the fact that most males generally wear no lipsticks at all. ![]() LPs are common on surfaces such as clothes, drinking cups and glasses, cigarette butts, envelopes, and cutlery items, and may be visible (patent) or invisible (latent). reported a useful review of real cases that utilise cheiloscopy. showed that proper LP analysis could be useful in estimating gender, race, crime type, as well as the number of persons involved in a crime. Cheiloscopy may thus prove valuable in criminal profiling. Furthermore, the pattern of labial wrinkles and grooves exhibits discriminatory individual characteristics, with a scope that has been equated to fingerprints. The increasing sophistication of crime, and the tendency of criminals to adopt trail-covering precautionary measures during the commission of a crime, have led to advocacy for the use of lip marks as additional tools in forensic investigations of crime. The grooves and wrinkles on lips begin development at approximately 6 weeks estimated gestational age and once established, these unique patterns persist throughout life except after a deformity (through injury or disease) or putrefaction. The presence of LPs may constitute circumstantial evidence. These glands’ secretions (together with the moisturising activity of saliva from the tongue), upon contact with a surface, form the basis of LPs. The vermillion border of the lips has sweat and sebaceous glands. The study and evaluation of LPs (i.e., lip marks), based on the assumed concept of labial grooves’ uniqueness, is termed cheiloscopy or queiloscopy. A lip print (LP Figura linearum labiorum robrorum) forms when the characteristic patterns of the grooves and wrinkles ( Sulci labiorum roborum) of the labial mucosa come into contact with a surface. ![]() Whereas enhancements for the foregoing evidence types are well-known, there are minimal data on the impression produced by the human lip. ![]() Latent forensic mark evidence of fingerprints, palm prints, and often even footprints can be decisive in resolving criminal cases. Forensic sciences, cheiloscopy, lip print, lysochrome, fluorescent dye, persistent lipstick Introduction ![]()
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