Sex Determination using Comparison of the Thickness of Permanent Maxillary Premolars and First Molars by Digital Bitewing Radiography

Document Type : Original Article


1 Assisstant Professor of Radiology.Department of Radiology, Faculty of Dentistry, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.

2 Postgraduate Student of Radiology.Department of Radiology, Faculty of Dentistry, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.

3 Assisstant Professor of Endodontics.Department of Endodontics, Faculty of Dentistry, Hamedan University of Medical Sciences, Hamedan, Iran.

4 Postgraduate Student of Maxillofacial Surgery.Department of Maxillofacial Surgery, Faculty of Dentistry, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.


Background and Objective: Human identification playing an important role in forensic medicine. Sex differences from remained human skeletons have been evaluated in many societies but dental investigations were less studied. The aim of this study was to compare mesio-distal diameter of permanent maxillary first and second premolars and first molars by digital bitewing radiography among Iranian men and women.
Subjects and Methods: This analytical epidemiological study was carried out on 100 bitewing radiography of patients. Films were digitally scanned and then the magnification was calculated, the mesiodistal diameter of the crown, dentin and mesial diameter and distal diamter of enamel were measured. Data were analyzed using independent sample T test and discriminant functions.
Results: In this study mesio-distal mean diameter of the first and second premolars dentin were significantly greater in men than in women (p < 0.05). But there is no different in mesio-distal diameter of the first molars dentin. There were no significant differences in mesial and distal diameter of enamel and mesio-distal diameter of the first and second premolars and first molar crowns in men and women.
Conclusion: In the present study we can conclude that sex determination in Iranian population can be highly possible by intact remaining maxillary first and second premolars dental samples. Also, this study approves sexual dimorphism in mesio-distal diameter of dentin with an accuracy of 52 percent.


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