Please use this identifier to cite or link to this item: https://ptsldigital.ukm.my/jspui/handle/123456789/647866
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dc.contributor.advisorAlizae Marny Fadzlin Syed Mohamed, Assc. Prof. Dr.en_US
dc.contributor.advisorMurshida Marizan Nor, Dr.en_US
dc.contributor.authorTey, Sock Nee (P106568)en_US
dc.date.accessioned2023-12-18T06:12:26Z-
dc.date.available2023-12-18T06:12:26Z-
dc.date.issued2023-09-19-
dc.identifier.urihttps://ptsldigital.ukm.my/jspui/handle/123456789/647866-
dc.description.abstractPalatal rugae are irregular ridges present on the anterior part of the palate. Due to their stability and uniqueness to everyone, they have been proposed as a stable reference area for orthodontic superimposition to quantify tooth movement and anchorage loss, and as a diagnostic tool for human identification. Evidence showed some similarities in the palatal rugae amongst family members, which suggested the influence of hereditary in palatal rugae. Heritability estimates (h2) express the proportion due to nature or nurture. Therefore, this study amongst the sibling groups aimed to i) investigate palatal rugae morphology variation, ii) determine the association of shape and size (allometry) of palatal rugae, iii) investigate palatal rugae shape variation and iv) determine the heritability amongst siblings. This cross-sectional study involved an archive of 3- dimensional (3D) digital images of the maxillary arches of 150 subjects, consisting of three groups of siblings (female-male, male-male, and female-female). Six palatal rugae (first, second, and third) of the right and left of the palatine raphe were assessed across the sample using Stratovan Checkpoint software (Stratovan Corp, USA). The result postulated a wide morphology variation of palatal rugae, with 71.3% of the shape variation covered in the first nine principal component analyses (PCA). Statistically significant allometry accounted for 2.46% (p < 0.05). Besides, three of six palatal rugae shapes could be differentiated between sibling groups (p < 0.05), they were right first, right second, and left third rugae. The genetic influence was observed in all siblings in seven palatal rugae landmarks (h2 > 0.7), transverse distance of left second rugae (h2 > 0.6), intermedial distance of third rugae (h2 > 0.8), and the interlateral distance of second rugae (h2 > 1). The female-male siblings showed h2 > 0.5 in the three variables of anteroposterior distance. In conclusion, palatal rugae show individual characteristics and are influenced by genetic factors. Therefore, palatal rugae can be theorised for orthodontic superimposition and forensic odontology.en_US
dc.language.isoenen_US
dc.publisherUKM, Kuala Lumpuren_US
dc.relationFaculty of Dentistry / Fakulti Pergigianen_US
dc.rightsUKMen_US
dc.subjectPalateen_US
dc.subjectMorphologyen_US
dc.subjectUniversiti Kebangsaan Malaysia -- Dissertationsen_US
dc.subjectDissertations, Academic -- Malaysiaen_US
dc.titleThe heritability of palatal rugae amongst siblings: geometric morphometric methoden_US
dc.typeThesesen_US
dc.format.pages93en_US
dc.format.degreeDegree Of Doctor Of Clinical Dentistry (Orthodontics)en_US
Appears in Collections:Faculty of Dentistry / Fakulti Pergigian

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