Identification of Posterior superiore alveolar artery position and its association with maxillary sinus in patients cbct images Referring to Radiology Department of Tabriz Dental School in 1395-1396

Abstract

Assessment of the maxillary sinus anatomy before sinus augmentation is important for avoiding surgical complications, because of the close anatomical relationship between the posterior maxillary teeth and the maxillary sinus. The posterior superior alveolar artery (PSAA) is the branch of the maxillary artery that supplies the lateral sinus wall and overlying membrane. We evaluated the location of the PSAA and its relationship to the alveolar ridge and maxillary sinus using cone beam computed tomography (CBCT). The study group consisted of 145 CBCT scans obtained from the archive of the dentomaxillofacial radiology department at Tabriz dental University during 1395-96 years. The distance between the lower border of the artery and the alveolar crest, bone height from the sinus floor to the ridge crest, distance from the artery to the medial sinus wall, and the diameter and location of the artery were determined. In the present study, the majority of people had intraosseous canal and had a lower percentage of sub membranous canal and canal on the outer cortex of the lateral sinus wall . 39.3% were male and 60.7% were female. The diameter of PSA was 0.73mm. The distance between the lower border of the artery and the alveolar crest was higher on the right side than the left(p<0.05), but there was no significant difference between men and women(p>0.05). The diameter of the posterior superior alveolar artery on the two sides of the jaw was not statistically significant(p>0.05), but in men it was more than women(p<0.05). Detailed knowledge about the location of the PSAA and sinus morphology may be obtained with CBCT before maxillary sinus surgery.