Prevelance of Haller's Cells: A Panoramic Radiographic Study.

Background: Infraorbital ethmoid cells, also known as Haller's cells can be seen on panoramic radiographs. These help in identification of various pathologies and patient symptoms.

Objective: To determine the prevelance and characteristic of Haller's cells on panoramic radiographs. Infraorbital ethmoid cells are extensions of ethmoid air cells into areas of orbit and maxillary sinus.

Materials And Methods: This study comprised of 1000 panoramic radiographs of healthy adults of the age 18-80 years. Each radiograph was interpreted for the presence of haller's cells. The data collected were then tabulated and subjected to descriptive statistics and chi-square test.

Results: Haller's cells were observed in 19.2% patients. Majority of cells were present unilaterally (176 cells) while only 15 were seen bilaterally. Maximum cells were oval in shape, unilocular and single in number.

Conclusion: Presence of haller's cells helps in enumerating the differential diagnosis for orofacial pain and in avoiding surgical complications in endonasal procedures.