The accuracy rate of matching palatal rugae patterns before and after orthodontic treatment was 95. Instability of palatal rugae following rapid maxillary. Lower than acceptable reproducibility using both superimposition methods was found for a 40. Assessment of the stability of the palatal rugae in a 3d.
Comparison of palatal rugae pattern among indian and tibetan population jagadish hosmani, nikita bhujang gadekar, vijayalakshmi s kotrashetti, ramakant nayak, deepa babji, sudhir mishra department of oral pathology and microbiology, maratha mandals ngh institute of dental sciences and research centre, belgaum, karnataka, india. Comparison of palatal rugae patterns in kodava and. Using an matlab software system, information matching of the palatal rugae was performed. Comparison of lip prints, palatal rugae with blood groups in.
Palatal rugae retain their shape throughout life and hence can be useful as an identification tool. Comparison of palatal rugae pattern among indian and. Preservation of evidence and records in forensic odontology. For this purpose, a special software was designed called palatal rugae comparison software prcs version 2. In the digital images the palatal rugae were highlighted by using adobe photoshop 7. These researchers obtained up to 97% accuracy in identifying individuals in a simulated post and antemortem comparison of the palatal rugae. Reliability for forensic odontology and personal identification. Palatal rugae a stable landmarka comparison between. Palatal rugae patterns as a bioindicator for forensic.
Maxillary digital dental models of patients with normal occlusion superimposed on palatal rugae showed an adequate reliability for a 5. The authors obtained 250 casts by using irreversible hydrocolloid. Pdf palatal rugae, also known as plicae palatinae transversae and rugae. Palatal rugae participate in food breaking, facilitate transport of food from oral cavity, and help in the perception of taste. The aim of the study was to establish the reliability of using the palatal rugae dimensions in identifying the different ethnic groups. Analysis of palatal rugae morphology before and after orthodontic. Identification of the badly mutilated body has been done using rugae patterns on patients denture in the past. Comparison between right and left primary rugae rugae mean sd pvalue right primary 3. This study showed that utilization of palatal photographs is highly viable. Palatal rugae as an aid for personnel identification.
Personal identification is based on the comparison between ante mortem and post mortem data which can be considered unique for each individual. Since the last century, the palatal rugae have been used as references to compare dental movements occurring before and after orthodontic treatments. It should be normal to find that aob patients have a narrower palate and thicker palatal rugae. Only one study on palatal rugae pattern in two different populations of india has been. Pdf 3d evaluation of palatal rugae for human identification. The aim of this study was to compare the uniqueness of rugae pattern amongst sibling pairs, determine the predominant rugae pattern and to assess the gender difference in rugae forms in 5 to 15 years old children and its utility in sex determination. Garima bhatt darshan dental college and hospital, udaipur, rajasthan, india corresponding author. Assessment of size, shape, and position of palatal rugae. In forensic odontology dentists play a major role in sustaining legal and criminal issues 12. Comparison of palatal rugae patterns in kodava and malayalee populations of south india deeksha kiran shetty 1, priyanka s machale 2, suyog chandrashekar savant 3, syed ahmed taqi 4. Palatal rugoscopy implementation in forensic odontology a. Palatal rugae patterns as bioindicators of identification in.
In the article titled, comparison of palatal rugae patterns in kodava and malayalee populations of south india published in pages 8589, issue 2, vol. Design and development of a palatal rugae based biometric. The present study aimed at analyzing the differences in rugae pattern among kodavas and tibetan populations of coorg, india and to examine if there was a difference in the rugae pattern between males and females within each group. In order to improve the palatal rugae analysis system, we designed a software, connected to a camera device that allows to acquire the palatal impression, to easily identify the salient palatal features and to store them in a database. Delineation of palatal rugae the delineation of palatal rugae was divided into three parts, including the entire size of the papilla, contour of rugae and length of the median palatal raphe, and was performed with 0. Casereport 3d evaluation of palatal rugae in identical twins. In circumstances where identification of an individual by fingerprint or dental record comparison is difficult, palatal rugae may be considered as an alternative. In addition, we studied the factors influencing its size, with subsequent comparison of the results between gender, using digital models. Palatal rugae, personal identification, forensic odontology, orthodontic movement. Dec 17, 2015 palatal rugae retain their shape throughout life and hence can be useful as an identification tool. Palatoscopy or palatal rugoscopy, is the name given to the study of palatal rugae in order to establish a persons individuality.
Palatal rugae can aid in this identification, as they remain unchanged once formed in embryo. I declare that palatal rugae patterns in a sudanese population sample is my own work, that it has not been submitted before for any degree or examination in any other university, and that all the sources i have used or quoted have been indicated and acknowledged as complete references. Differentiation between palatal rugae patterns of twins by. The same software was used to complete the linear and angular measurements of the palatal rugae and linear, area and volume measurements of palatal dimensions. The uniqueness of palatal rugae as an aid for personal identification was the sole objective of this study. Comparative analysis of variation in morphology of rugae. Comparison of palatal rugae patterns in kodava and malayalee populations of south india. Ortho insight 3d software offers digital storage of patient records, cast. Palatal rugae patterns in a sudanese population sample. The initiation and termination points of rugae were marked on all 100 images of clinical photographs using ms paint version 5. A total number of sixty participants of two different ethnic groups were taken. Palatal rugae are one of the simple methods used by a forensic dentist in human identification due to its transverse ridges, palatal rugae a finger print of oral cavity. The earliest study was done in 1889 by allen to use palatal rugae as an alternate method for human identification in forensic science6. Comparison of adaptation between the major connectors.
This case report aims to evaluate the palatal rugae pattern in a pair of identical twins, to assess the related rugae features, and to 3d compare rugae target points with previously published values using stereolithography technology. Comparison of palatal rugae pattern among indian and tibetan. Design and development of a palatal rugae based biometric identification system by essa a. Comparison of rugae dimensions among dental students from punjab and assam. Assessment of the stability of the palatal rugae in a 3d3d.
Stereolithography is a typical modality of rapid prototyping used for producing physical models, patterns, and production parts in a layerbylayer manner from computeraided design software cad via 3d printing. Five evaluators including 3 dentists, 1 computer professional. A forensic study mamta tanwar 1, sandeep goyal 1, karthikeyan ramalingam 1, yogesh kumar 2, kanika aggarwal 2, vikram pal aggarwal 3 1 department of oral pathology and microbiology, surendera dental college and research institute, sri ganganagar, rajasthan, india 2 department of conservative dentistry and. Computerized method identification of individuals is a challenging task in forensic odontology. Palatal rugae are highly specific to each individual as their fingerprints. The palatal rugae number, shape, width, height, and location vary from the left side of the palate to the right side as well as from one person to another, and are unique to every individual. Assessment of size, shape, and position of palatal rugae rivera. A special software was designed called the palatal rugae comparison software prcs version 2. Jan 11, 2018 thicker mucosae are at the palatal rugae and the two sides of the palatal vault with better flexibility, while thinner mucosae are at the center of palate, also namely hard areas, with worse. Comparison of lip prints, palatal rugae with blood groups. Palatal rugae pattern of an individual may be considered as a useful adjunct for sex determination for identification purposes. Limsons and julian15, who compared some points of the rugae patternsusing computer software, reported that the percentage of correct matches ranged from 92 to 97% based on four computer operators. In this study, the accuracy rate of the digital image recognition system used for matching palatal rugae pattern before and after orthodontic treatment was 95. So this study was conducted with an aim to assess the different patterns of rugae in gender identification.
Superimposition of various digital photographs for comparing rugae patterns can be performed using various computer software. Effects of various dental tt modalities on rugae pattern were also assessed. It means that the 3d comparison of palatal rugae area can be applied reliably to support positive identifications in court because uniqueness and stability guarantee that a subject examined. Five evaluators including 3 dentists, 1 computer professional, and 1 general surgeon were asked to match the rugae pattern using the software. Assessment of different palatal rugae patterns in gender. Comparison of rugae dimensions among dental students from. Matching palatal rugae patterns before and after orthodontic treatment.
Statistical analysis was done using spss 16 software. Association among geometric configurations of palatal rugae. Jan 01, 2017 this case report aims to evaluate the palatal rugae pattern in a pair of identical twins, to assess the related rugae features, and to 3dcompare rugae target points with previously published values using stereolithography technology. Comparison of rugae pattern between dentulous and edentulous. In addition, show a significant association between shapes and ethnicity. Julian simulated an identification process through comparison of palatal rugae from 250 subjects with computer software.
Identification was performed by four observers a forensic. Comparison of rugae pattern between dentulous and edentulous population of rajasthan state. Identification of individuals using computer technique. Palatine rugae and their significance in clinical dentistry. Several authors concluded in their study that the rugae are stable and can be used as reference landmarks1,312 but bailey et. Differentiation between palatal rugae patterns of twins by means of the rinon method and an improved technique not exhibit the same palatal rugae pattern. Transverse linear distance between medial and lateral point, anteroposterior linear. The study investigated the relationship of the palatal rugae to points and distances of the cleft palate during the time period from birth to early mixed dentition in subjects with unilateral and bilateral cleft lip and palate by means of threedimensional measuring system. Palatoscopyrugoscopy is the study of palatal rugae that helps in sex determination. The application of 3d image acquisition systems to palatal. Request pdf identification of individuals using palatal rugae. In all cases ante mortem and post mortem data from the same individual were correctly matched. Rugal and palatal measurements the anterior, middle, and posterior rugae were numbered 1, 2, and 3, respectively, and the right and left sides identified as r and l. Palatal rugae pattern in nepalese subjects table 3.
Casereport 3d evaluation of palatal rugae in identical twins emiliyataneva,carlaevans,andgraceviana departmentoforthodontics,collegeofdentistry,universityofillinoisatchicago,chicago,il,usa. The plotted points were assessed by the software program and the information stored sequentially, corresponding to the pixel position. Sterophotogrammetry which by using special device called traster marker allows for correct determination of length and position of every single rugae. Palatal rugae are epithelial ridges on anterior part of palatal mucosa on each side of mid palatine raphe behind incisive papilla. There are a few studies available in the literature that compare the shape and size of the maxilla and palatal rugae 8, 9, 18 between individuals with aob and nvo, but none of them compares the shape and size of the palatal rugae. Sc linga new technique for palatal rugae comparison. This is the most commonly used scientific method of forensic identification.
Assiri a dissertation submitted in partial fulfillment of the requirements for the degree of doctoral of philosophy in biomedical informatics department of biomedical informatics school of health related professions. Palatoscopy is the study of palatal rugae pattern to. The photographic superimposition technique using adobe photoshop 8. Comparison of palatal rugae patterns in kodava and malayalee.
The changes identified in the distances from the lateral palatal rugae points of the first and third rugae to the incisal. Palatal rugae patterns in edentulous cases, are they a. Palatal rugae are asymmetric ridges of dense connective tissues extending laterally, on both sides, from the incisive papilla and the anterior part of the median palatine raphe. Palatoscopy or palatal rugoscopy is the study of palatal rugae in order to establish a persons identity. Palatal rugae may be an alternative identification mode when it is difficult to utilize fingerprints or dental records. Garima bhatt darshan dental college and hospital oral and maxillofacial pathology loyara, ranakpur road, udaipur rajasthan 301, india tel. Analysis of palatal rugae morphology before and after.
Limson and julian 55 used a computer software program to evaluate the use of palatine rugae patterns for forensic identification. Palatal rugae plica palatinae transversae refer to a series of transverse ridges on the anterior part of the palatal mucosa. Pairwise comparison for two populations was done using nonparametric mannwhitney test. Palate shape and size and palatal rugae morphology of. Palatal rugoscopy implementation in forensic odontology. These rugae are present on each side of the median palatal raphe and behind the incisive papillae.
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