فهرست مطالب حسین ضرابی

Raising knowledge about skeletal and soft tissue changes with aging has been highly essential due to an increasing demand for esthetic facial surgery due to aging. The aim of this study was to evaluate the three-dimensional computed tomography images to assess changes in the orbit with aging. In this analytical-descriptive study facial bone computed tomography (CT) scans were obtained from 66 subjects (33 females, 33 males). The subjects consisted of 11 males and 11 females in each of the three age categories: 20-40, 41‒60 and over 60. Each CT image was reinforced by using the Volume Viewer three-dimensional analysis software program. Linear measurements were carried out using Workstation GE 403 software program. Orbital aperture width was measured as a line drawn from the posterior lacrimal crest to the fronto-zygomatic suture. This line was then used as the x-axis from which the distances to the superior and inferior orbital rim at nine equal increments (labeled 1 to 9) were obtained. The height of the orbit was measured at 10 locations. Data were analyzed using one-way ANOVA and post hoc LSD tests (α=0.05). In both genders there were significant changes in the orbital width (p value < 0.001) with aging. There was an increase in the height of superior orbital rim in both genders (p value < 0.05), except for location 8, i.e. the most lateral point, in males (p value = 0.3). In addition, there was an increase in the height of the inferior orbital rim in both genders (p value < 0.05), except for location 1 (the most medial point) in males (p value = 0.2), suggesting that the inferior and superior orbital rims receded with age. Under the limitations of the present study, recession takes place in the width and height of the orbit with advancing age in both males and females. Knowledge about these senile changes might prove useful in esthetic surgeries, facial reconstructions and reconstruction of facial changes.

Infraorbitalethmoid air cells are extensions of anterior ethmoid sinus into the floor of the orbit and superior aspect of the maxillary sinus. Such anatomical variations may result sinusitis, mucocele, retention cyst and headache. CT scan is commonly used for imaging infraorbitalethmoidcells. The aim of present study was: To determine the prevalence of infraorbitalethmoid cells on CT Image in patients over 6 years of age. Materialsand In this descriptive analytic study, 190 CT Cronal Images (91 women and 99 men) were examined for infraorbitalethmoid cells and their characteristics Other data such as age, sex, involved side, history or symptom of sinusitis, and sinus disorder were recordedusing a questionnaire Data analysis were done in spss statistical softwere by chi،squre test. Prevalance of infraorbitalethmoid (haller’s) cells on CT Image in patients older than 6 years were 11. 6% (12. 1% for men and 11% for women). There was no statistically significant difference between men and women. The most frequency related to patient who were between 41،50 years old (24. 1%) and the least frequent age was in patient under 20 years (0%). Unilateral involvements (9. 5%) were more than bilateral form (2. 1%) and there was statistically significant difference between right and left sides. two patients (9. 1%) with haller cells were multilocular, and 20 patients (90. 9%) with haller cells were unilocularview. There was a satistically significant difference in haller’s cell frequency between different shapes. ten patients (45. 5%) with haller cells had history or symptoms of sinusitis and 3 patients (13. 6%) with haller cells had retention cyst in CT Image. sixteen Patients (72. 7%) with haller cells had narrowing of Infandibuloum on CT Images. According to the result of this study and the prevalence of infraorbitalethmoid cells on CT Image, Identification of these cells can help the dental professional, to diagnoses orofacial pain with origin of sinus