Cheiloscopy: A new role as a marker of sagittal jaw relation

Abstract

Context:It has been proved that lip prints are analogous to thumb prints. A correlation between thumb prints and sagittal dental malocclusion has already been established. Soft tissue is gaining more importance in judgement of deformity or identity of a patient.Aim:To find a correlation between sagittal skeletal jaw relation and lip prints.Settings and Design:Descriptive, cross-sectional, comparative, single-blind, hospital-based study.Materials and Methods:A total of 90 patients were categorized into skeletal class I, class II, and class III, comprising 30 patients in each group with equal gender distribution. Dolphin imaging (10.5) software was used for analyzing sagittal jaw relation. Lip prints obtained from these 90 patients were analyzed.Statistical Analyses Used:Karl Pearson's correlation coefficient, Chi-square test, t-test, Spearman's co-efficient, analysis of variance (ANOVA).Results:It was observed that angle ANB (Angle formed between points nasion[N] to Subnasal[A] and nasion[N] to supramental [B]) and beta angle were statistically significant, revealing a strong negative correlation (-0.9060) with different classes of jaw relation. Significant difference was observed between genders in all the three classes. Significant difference was observed in relation to lip print and the quadrants of upper and lower lips. A statistical significance was noted on the right side of both upper and lower arches.Conclusion:This study shows that lip prints can be employed for sagittal jaw relation recognition. A further study on various ethnic backgrounds with a larger sample size in individual group is necessary for comparing lip prints and malocclusion.

Lip prints: The barcode of skeletal malocclusion

“…Our study associates vertical lip patterns with skeletal class III malocclusion. Similarly, Kulkarni[ 16 ] et al ., concluded that it is easier to relate lip print patterns to class I and class III sagittal malocclusion subjects as compared to class II subjects but the association of lip patterns with different skeletal malocclusion needs a extensive research with a large sample from varied ethnical groups for conclusive results. Hence, further research is needed for the evaluation of lip prints in a larger sample with specifically hereditary malocclusions to further validate the correlation between lip patterns and skeletal malocclusions.…”

“…In only one of the study of this type in the past, using four quadrants of upper and lower lips found 1, 3 and 2, 3 types of lip print combination in class I subjects, 1, 4 and 3, 4 types of lip prints in skeletal class III and 1, 2 type in class II subjects but we could not compare this with our study because of difference in lip print analysis method. [ 16 ]…”

Comparative Evaluation of Lip Prints Patterns in Gender and Different Musculoskeletal Malocclusion

“…Narayan et al [7] in 2012 conducted study to analyse relation of malocclusion to lip prints and his results show that lip pattern type I and III are more common in Skeletal Class I; Type I and IV are more common with skeletal class III, and type I and II being more common with skeletal class II.…”

Orthodontic Forensic Science: The Unseen Part of our Profession

“…It does not change in pattern since birth, and can give significance, in number of people involved, cosmetics used; so socioeconomic status, ethnicity [18].…”