Evaluation of Efficacy of Three Different  Materials Used in Cheiloscopy –A  Comparative Study

Dolly, Anjaly; Rodrigues, Charlotte; Bankur, Rashmi; Gopinathan, Pillai Arun; Sharma, Rakhee; Doddamani, Annapurna

doi:10.7860/jcdr/2016/21410.8653

Cited by 6 publications

(6 citation statements)

References 9 publications

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“…In a comparative study to evaluate the potency of the aforementioned dyes in LP enhancement, lip grooves and wrinkles were sharper and well-defined in LPs developed with fluorescent dye than with lysochrome dyes [ 4 ]. This result is consistent with previous work [ 17 , 18 , 25 , 29 , 30 ]. Natural dyes (vermilion and indigo dye) exhibit the same enhancement efficiency as the lysochrome dye Sudan Black [ 3 ] on LPs from long-lasting lipstick on different substrates (cup, static fabric, and cotton fabric).…”

Section: Resultssupporting

confidence: 94%

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Lip print enhancement: review

Abedi

Afoakwah

Bonsu

2020

Forensic Sciences Research

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Lip print (LP) evidence can be an essential tool for human forensics. LPs have conventionally been developed using substances such as lysochrome dyes, fluorescent dyes, indigo dye, aluminium powder, and silver metallic powder. However, techniques for LP enhancement from various substrates are currently inconsistent and lack standardisation in practice. This review summarises current knowledge on the physical and chemical techniques of LP enhancement, identifies limitations, and provides suggestions for future research on practical applications of cheiloscopy as a forensic tool in criminal justice. Key points The grooves and wrinkles of the human lip establish unique patterns that persist throughout life. Cheiloscopic patterns exhibit discriminatory individual characteristics that may constitute circumstantial forensic evidence. Enhancement techniques for latent lip prints on porous and nonporous substrates can be classified as physical or chemical. Unlike fingerprint, there is a current lack of consistency and/or standardisation on latent lip print enhancement methods in frontline forensic practice.

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Section: Resultssupporting

confidence: 94%

“…Similarly, Dolly et al. [ 18 ] obtained significant print development using Sudan III dye and aluminium powder. Furthermore, Khanna et al.…”

Section: Resultsmentioning

confidence: 98%

Lip print enhancement: review

Abedi

Afoakwah

Bonsu

2020

Forensic Sciences Research

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“…The latent lip prints can be better developed using materials that are more sensitive to fatty acids. Lysochromal dyes contain an ingredient that dissolves in contact with fat and another that stains and, hence, have the ability to stain fatty acids while developing latent lip prints (9). Moreover, in the case of a deceased person, the lip prints have to be obtained within 24 hours to prevent them from undergoing post-mortem changes.…”

Section: Introductionmentioning

confidence: 99%

Frequency and correlation of lip prints, fingerprints and ABO blood groups in population of Sriganganagar District, Rajasthan

Sandhu

Verma

Padda

et al. 2018

ama

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<div class="WordSection1">Objective. To investigate the frequency and uniqueness of different lip print patterns, fingerprint patterns in relation to gender and ABO Rh blood groups among a semi-urban population of Sriganganagar, Rajasthan. Materials and methods. The study was conducted on 1200 healthy volunteers aged 18-30 years. The cheiloscopic and der- matographic data of each subject were obtained and were analysed according to the Suzuki and Tsuchihashi and Henry systems of classification, respectively. Two forensic experts analyzed the patterns independently. The ABO Rh blood group was also recorded for each subject. The Chi square statistical analysis was done and tests were considered significant when p value <0.001 and Cohen kappa test was applied to analyze inter-observer reliability. Results. The B+ blood group was noted as most common in both genders while least common were A− among males and AB− in females. Type II lip pattern was most predominant while the least common was Type I’ in males and Type I’ and Type V in females. The UL fingerprint pattern was the most common, while RL was least noted in both genders. All the fingerprint patterns showed correlation with different lip print patterns. A correlation was found between different blood groups and lip print patterns except Type I (vertical) lip pattern. A positive correlation was observed between all the blood groups and fingerprint patterns, except for RL pattern. Conclusion. There is an association between lip print patterns, fingerprint patterns and ABO blood groups in both the genders. Thus, correlating the uniqueness of these physical evidenc- es sometimes helps the forensic team members in accurate personal identification or it can at least narrow the search for an individual where there are no possible data referring to the identity of the subject.</div>

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“…It has been found that lysochrome dyes, such as Sudan III, aluminum powder, indigo dye, fingerprint powder can be developed successfully for latent lip print purposes. [9][10][11] In this study, fingerprint powder was found to be the best developer followed by Sudan III and vermilion. In the past literature also fingerprint powder was found to be of prime importance due to its composition and mechanical properties.…”

Section: Discussionmentioning

confidence: 73%

Latent lip print: A comparative study of developers

Singh

Singh²,

Sah³

et al. 2022

JOOO

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Identification of a person is of paramount importance in a medico-legal investigation. At present more and more people use protecting lipsticks and permanent lipsticks. With these lipsticks a latent lip print is generated by contact with a surface and, like with the latent fingerprints occur, this latent lip print can be developed. This study aims to retrieve latent lip prints from various inanimate surfaces like thermocoal plate, bone china, and glass to compare the efficacy of developers i.e., fingerprint powder, Sudan III, Vermillion, and its comparison with standard lipstick prints. Current research assesses the effectiveness of particular surfaces in the retrieval of lip print in personnel identification. This study included a total of 30 subjects. Latent lip print was developed on the different inanimate surfaces by pressing the lips against the different vehicles. After collecting samples, a camel hair brush was used to retrieve all three chemicals individually by simply tapping on all three surfaces. Application of chemicals was continued until the print became clearly visible for the study. Developed latent lip print was then compared with the visible lip print. Subsequently, a standard lipstick print was developed from the same subject. All the samples were coded and graded according to the patterns suggested in the literature. Discrete (categorical) data were summarized in number and percentage and compared by chi-square (χ2) test. Analyses were performed on SPSS software (Windows version 17.0).: The overall (i.e., total of all three surfaces) favourable outcome was found highest in Fingerprint powder (58.9%) followed by Sudan III (28.9%) and Vermilion (10.0%) the least (Vermilion < Sudan III < Fingerprint powder).Comparing the overall outcomes of three developers, χ2 test showed significantly different and higher favourable outcome in Fingerprint powder as compared to both Sudan III and Vermilion (χ2=92.09, p<0.001) The study found Fingerprint powder the best developer and Thermocol plate the best surface. The findings of this study may be beneficial for investigators.

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Evaluation of Efficacy of Three Different Materials Used in Cheiloscopy –A Comparative Study

Cited by 6 publications

References 9 publications

Lip print enhancement: review

Lip print enhancement: review

Frequency and correlation of lip prints, fingerprints and ABO blood groups in population of Sriganganagar District, Rajasthan

Latent lip print: A comparative study of developers

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