Abstract
BackgroundThis study aimed to investigate the distribution and prevalence of intraosseous loop (anastomosis between posterior superior alveolar artery and infraorbital artery) in Koreans detected on computed tomography (CT) images taken prior to sinus augmentation surgery.MethodsFrom the 177 patients who underwent sinus augmentation with lateral approach at Ewha Womans University Department of Implant Dentistry, 284 CT scans were evaluated. The canal height (CH), ridge height (RH), and canal height from the sinus floor (CHS) were measured on para-axial views at the first premolar, first molar, and second molar. The horizontal positions of the bony canals in the lateral wall were also classified. One-way analysis of variance (ANOVA) and t test were used to estimate the statistical differences (p < 0.05).ResultsThe intraosseous loops were detected in 92 CT scans (32 %). The mean vertical height of the bony canals from the alveolar crest (CH) was 23.45 ± 2.81, 15.92 ± 2.65, and 16.61 ± 2.92 mm at the second premolar, first molar, and second molar, respectively. In the horizontal positions of the bony canals, intraosseous type was the most predominant. The canal heights more than 15 mm and less than 17 mm were most prevalent (33.7 %) and those under 13 mm were 12.0 %.ConclusionsThe radiographic findings in this study could be used to decide the lateral osteotomy line avoiding potential vascular complication. However, only one third of the canals could be detected in CT scans; a precaution should be taken for the possibility of severe bleeding during lateral osteotomy.
Highlights
IntroductionThis study aimed to investigate the distribution and prevalence of intraosseous loop (anastomosis between posterior superior alveolar artery and infraorbital artery) in Koreans detected on computed tomography (CT) images taken prior to sinus augmentation surgery
This study aimed to investigate the distribution and prevalence of intraosseous loop in Koreans detected on computed tomography (CT) images taken prior to sinus augmentation surgery
Sinus augmentation with lateral osteotomy is a predictable surgical technique that allows successful placement of dental implants to patients with extremely atrophic posterior maxilla
Summary
This study aimed to investigate the distribution and prevalence of intraosseous loop (anastomosis between posterior superior alveolar artery and infraorbital artery) in Koreans detected on computed tomography (CT) images taken prior to sinus augmentation surgery. Sinus augmentation with lateral osteotomy is a predictable surgical technique that allows successful placement of dental implants to patients with extremely atrophic posterior maxilla. Despite the high level of safety and predictability [1–3], severe vascular complications may occur during lateral osteotomy as a result of arterial injury [4, 5]. The arterial supply of the maxilla originates from the posterior superior alveolar artery (PSAA) and infraorbital. It gives rise to muscular branches as well as the anterior superior alveolar arteries, which forms an anastomosis with the PSAA [7–11]. The intraosseous loop, an anastomosis between the IObr of the PSAA and IOA, was found in 100 % of anatomic specimens at the lateral antral wall, 18.9 ± 2.82 mm
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.