Hamidreza Arabion - Department of Oral and Maxillofacial Surgery, Shiraz University of Medical Sciences, Shiraz, Iran
Abdol Aziz Haghnegahdar - Department of Oral and Maxillofacial Radiology, Shiraz University of Medical Science, Shiraz, Iran
Yasamin Sadegi Ardekani - Student of Dentistry, International branch of Shiraz University of Medical Sciences, Shiraz, Iran
Reyhaneh Ebrahimi - Department of Periodontology, Shiraz University of Medical Science, Shiraz, Iran

Introduction: Comparison of the relationships and distance between maxillary root tips and   the maxillary sinus floor using oral panoramic in the dolichocephalic and brachycephalic compared to mesocephalic individuals. Methods: Oral panoramic images from 300 individuals were analyzed and the relationships and distance between the maxillary root tips and the sinus floor was assessed by qualitative and quantitative variables. Results: The distance was significantly higher in the brachycephalic groups than that of the mesocephalic, and the mesocephalic group showed longer distance in comparison to dolichocephalic individuals. Qualitative comparison showed that type 1 relationship was the dominant position in the brachycephalic individuals while most of dolichocephalic individuals demonstrated type 2 and 3 relationships of the molar root tips and the maxillary sinus floor. Conclusion: Higher distances between the molar root tips and the maxillary sinus floor could be expected in the brachycephalic than mesocephalic and dolichocephalic individuals

Maxillary sinus, Molar teeth, OPG, maxilla