الفهرس 
Protocol
AIM OF THE STUDYOnly 14 pages are availabe for public view
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Abstract
Palatal rugae are asymmetrical and irregular elevations of the mucosa located in the anterior third of the palate, made from the lateral membrane of the incisive papillae and arranged in transverse direction from palatine raphe located in the mid-saggital plane.The pattern of orientation is formed by the 12th to 14th week of prenatal life and remains stable until the oral mucosa degenerates after death. Palatal rugae may be an alternative mode of identification when traffic accidents, acts of terrorism or mass disaster occur in which it is difficult to identify a person according to finger prints or dental records. The present study was carried out to estimate the prevalence and biometric characteristics of palatal rugae in population sample from Upper Egypt, to know the different morphological rugae patterns in males and females, and to compare age effects on rugae pattern on each gender. Cross sectional study design using a random sampling technique was employed in this study.The sample comprised of100 dental casts from 100 subjects who were volunteers or patients attending Al Azhar Dental Hospital, 25 males and 25 females ( age range 20-30 years) and another 25 males and25 females (age range 40-50 years). Classification of Trobo has been used in this study which divides simplerugae into 6 groups; classified from A to F and composed rugae are classified with the letter X, that result from two or more simple rugaunion. Results revealed that sex differentiation can be identified from rugae shape as males hassinousrugae more in left side &line rugae more in right side, additionally males has angle &point rugaenumber more than females, while,sinousrugae more in the right side & curve rugae more in the left side, in females, with no significant differences were observed in size of rugae among males and females. In the other hand in comparing age effects on rugae pattern on each gender we found that there was no significant difference in number, shape or size of palatine rugae. itis well-established fact that the palatal rugaepattern is consistent throughout the life.
Palatal rugae are asymmetrical and irregular elevations of the mucosa located in the anterior third of the palate, made from the lateral membrane of the incisive papillae and arranged in transverse direction from palatine raphe located in the mid-saggital plane.The pattern of orientation is formed by the 12th to 14th week of prenatal life and remains stable until the oral mucosa degenerates after death. Palatal rugae may be an alternative mode of identification when traffic accidents, acts of terrorism or mass disaster occur in which it is difficult to identify a person according to finger prints or dental records. The present study was carried out to estimate the prevalence and biometric characteristics of palatal rugae in population sample from Upper Egypt, to know the different morphological rugae patterns in males and females, and to compare age effects on rugae pattern on each gender. Cross sectional study design using a random sampling technique was employed in this study.The sample comprised of100 dental casts from 100 subjects who were volunteers or patients attending Al Azhar Dental Hospital, 25 males and 25 females ( age range 20-30 years) and another 25 males and25 females (age range 40-50 years). Classification of Trobo has been used in this study which divides simplerugae into 6 groups; classified from A to F and composed rugae are classified with the letter X, that result from two or more simple rugaunion. Results revealed that sex differentiation can be identified from rugae shape as males hassinousrugae more in left side &line rugae more in right side, additionally males has angle &point rugaenumber more than females, while,sinousrugae more in the right side & curve rugae more in the left side, in females, with no significant differences were observed in size of rugae among males and females. In the other hand in comparing age effects on rugae pattern on each gender we found that there was no significant difference in number, shape or size of palatine rugae. itis well-established fact that the palatal rugaepattern is consistent throughout the life.