Evaluation of the position of the posterior superior alveolar artery in relation to the maxillary sinus using the Cone-Beam computed tomography scans

Abstract

BackgroundThe aim of the present study was to evaluate the diameter, relationship and position of the posterior superior alveolar artery and its relationship with the alveolar ridge, the medial wall of the maxillary sinus, the prevalence of pathologic conditions and the maxillary sinus septa on CBCT images.Material and MethodsA total of 200 CBCT images (400 maxillary sinuses) of patients over 20 years of age were evaluated. The distances between the lower border of the artery and the alveolar crest and between the artery and the medial wall of the sinus and the diameter of the artery were measured. The position of the artery, the presence of pathologic conditions and septa were recorded in the posterior region in: a) males edentulous in the posterior region; b) males having teeth in the posterior region; c) females edentulous in the posterior region; and d) females having teeth in the posterior region.ResultsThe mean distance between the artery and the alveolar crest, irrespective of groupings, was 16.17±1.63 mm, with significant differences between the groups (P<0.05). The mean distance between the artery and the medial wall of the sinus was 11.65±1.21 mm, with no significant differences between the groups (P=0.796). The mean diameter of the canal was 1.37±0.44 mm, with no significant differences between the 4 groups (P=0.570). The position of the artery was intraosseous in 73.2%, beneath the sinus membrane in 21.7% and external to the lateral wall of the sinus in 4.9% of the cases. The overall prevalence rates of pathologic conditions and septa in the maxillary sinus were 45.7% and 26%, respectively.ConclusionsCBCT technique is useful for such evaluations and for possible variations in maxillary sinuses and presence of septa and pathologic entities in maxillary sinuses. Key words:Maxillary sinus, maxillary artery, Cone-Beam computed tomography.

Evaluation of the Posterior Superior Alveolar Artery Prior to Sinus Floor Elevation via Lateral Window Technique: A Cone-Beam Computed Tomography Study

“…In our study, the mean diameters of the PSAA at the FDP and LDP were 1.36 ± 0.46 mm and 1.12 ± 0.35 mm, respectively. Chitsazi et al 2 , Güncü et al, 24 and Kim et al 23 stated that the mean diameters of the PSAA were 1.37 ± 0.44, 1.3 ± 0.5, and 1.52 ± 0.47 mm, respectively, which were consistent with the results obtained in this study. Tehranchi et al 25 reported that the mean diameter of PSAA was 1.2 ± 0.37 mm in females and 1.38 ± 0.35 mm in males.…”

“…At the LDP, these percentages were 38.9%, 58.3%, and 2.8%, respectively. Chitsazi et al 2 reported that the diameters of the PSAA were <1 mm, 1–2 mm, and >2 mm in 30.2%, 59.1%, and 10.5%, respectively. Tehranchi et al 25 found that the diameters of the PSAA were 0–1 mm in 20.7%, 1–2 mm in 74.8%, and >2 mm in 4.5% of all cases, respectively.…”

“…1 Blood supply to the lateral wall of the maxillary sinus, the periosteum and the Schneiderian membrane is provided by the IOA and PSAA. 2 The IOA and PSAA are located in the sinus wall and may form intra- or extraosseous anastomoses. 3–6 Sinus floor elevation via the lateral wall is a sinus augmentation technique that was first described by Boyne and James and then modified by Tatum.…”

The radiological evaluation of posterior superior alveolar artery topography by using computed tomography

“…Almost in all studies, the most frequent PSAA localization was classified as intraosseous. [24][25][26] However, Lozano-Carrascal et al 27 and Khojastehpour et al 28 informed that it was below the membrane. In this present study, the most frequent localization of PSAA was noted intraosseous in first premolar region.…”

Clinical anatomy of the maxillary sinus: application to sinus floor augmentation

“…CBCT studies showed that PSAA was detected in 61 to 87% of the patients; it was located underneath the mucosa in 22% to 47% (type I), intraosseus in 47% to 73% (type II) and external cortex (superficial) in 5% to 6% (type III), and the mean diameter of the PSAA was 0.63 mm to 1.37 mm [29303132]. According to Khojastehpour et al [33], the rate of the detection rate of the PSAA in patients with an alveolar ridge height of <10 mm was significantly greater than the rate of detection in patients with an alveolar ridge height of >10 mm.…”