Morphological study of rugae palatinae in Sudanese Nubians

Ahmed, Altayeb Abdalla; Hamid, A.

doi:10.5603/fm.2015.0046

Cited by 6 publications

(5 citation statements)

References 21 publications

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“…Besides, this study group had more divergent type of rugae than convergent rugae. This finding was similar to the unification pattern observed in Egyptians and Indians but in contrast with Sudanese, Libyans, Serbians, and Bengalis which were predominantly convergent (23,27–29,32,34). The unification pattern was not statistically different between the sibling groups in this study.…”

Section: Discussionsupporting

confidence: 83%

“…The unification pattern was not statistically different between the sibling groups in this study. In contrast, Sudanese and Serbian females showed significantly more convergent rugae than males (23,27). Meanwhile, Iranian and southeast, North, and West Indian males showed significantly more divergent rugae than their counterparts (35–37).…”

Section: Discussionmentioning

confidence: 76%

“…The shape of the rugae was not significantly different among the sibling groups. In contrast, Sudanese Nubians (50 males and 50 females) showed positive sexual dimorphism using shape with prediction accuracy of 62–68% (27). Besides, shape has been shown to discriminate between population with prediction accuracy of 70% as reported by Nayak and colleagues.…”

Section: Discussionmentioning

confidence: 97%

“…This study group showed more backward directed rugae compared to forward and perpendicular rugae which is similar to the Bengali population (28). In contrast, forward directed rugae was predominant in Sudanese, Egyptians, Turkish, Gujarati, and Indians (22,27,(29)(30)(31)(32)(33). Generally, the population worldwide would show more forward directed rugae because there is a decrease in backward directed rugae with age.…”

Section: Discussionmentioning

confidence: 99%

“…The rugae were predominantly wavy which is commonly documented in most populations such as in Serbians, Turkish, Australians, Iraqi, Bosnians, Indians and Africans (20–26) and Chileans with sinuous patterns (13). In contrast, Egyptians and Indonesians had predominantly line rugae (3,27) alike Iranians and Koreans who have straight rugae patterns (16,19). Although the terminology is different due to the various classifications, wavy and sinuous patterns are similar in shape whereas line and straight patterns are analogous.…”

Section: Discussionmentioning

confidence: 99%

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The Heritability of Palatal Rugae Morphology Among Siblings*†

Chong

Mohamed

Nor

et al. 2020

Journal of Forensic Sciences

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Although there is clinical applicability of the palatal rugae as an identification tool in forensic odontology, controversy exists whether the palatal rugae patterns are stable or variable. The greater the genetic component, the higher the probability that palatal rugae patterns are stable. The aim of this study was to compare the palatal rugae morphology between full siblings and the proportion of variability due to genetic component. This cross‐sectional study was conducted on digital models of 162 siblings aged 15–30 years old. The palatal rugae patterns were assessed with Thomas and Kotze (1983) classification using Geomagic Studio software (3D Systems, Rock Hill, SC). The palatal rugae morphology between siblings showed significantly similar characteristics for total number of left rugae (p = 0.001), left primary rugae (p = 0.017), secondary rugae for right (p = 0.024) and left sides (p = 0.001), right straight rugae (p = 0.010), and right convergent rugae (p = 0.005) accounting for at least 6.25%‐12.8% of the variability due to heredity. Despite the similarities found, the palatal rugae patterns showed significant differences between siblings of at least 46.9% (p = 0.001). Zero heritability was found in 9 of the 14 rugae patterns. Meanwhile, total number of rugae, primary, backward, and convergent rugae showed moderate heritability (h2 > 0.3) and total number of secondary rugae showed high heritability (h2 > 0.6). In conclusion, despite the individuality characteristics, an appreciable hereditary component is observed with significant similarities found between sibling pairs and the palatal rugae patterns were both environmentally and genetically influenced.

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Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 76%

Section: Discussionmentioning

confidence: 97%