Prevalence and morphometric analysis of the alveolar antral artery in a group of Thai population by cone beam computed t
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ORIGINAL ARTICLE
Prevalence and morphometric analysis of the alveolar antral artery in a group of Thai population by cone beam computed tomography Vorawee Laovoravit1 · Kornkamol Kretapirom2 · Suchaya Pornprasertsuk‑Damrongsri2 Received: 1 March 2020 / Accepted: 11 August 2020 © Japanese Society for Oral and Maxillofacial Radiology and Springer Nature Singapore Pte Ltd. 2020
Abstract Objective To investigate the prevalence, diameter, and position of the alveolar antral artery (AAA) canals and measure the distances from the canal to the maxillary sinus floor and to the edentulous alveolar crest in each posterior maxillary tooth locations by cone beam computed tomography (CBCT). Methods CBCT images of the posterior maxillary region from 280 patients were investigated. The prevalence and diameter of the AAA canal were evaluated. The perpendicular distances from the canal to the maxillary sinus floor and to the edentulous alveolar crest of each tooth locations were measured. The mediolateral positions and routes of the canals were observed with novel classification. Statistical analyses were carried out to determine any significant differences in mean distances between the tooth locations along with mean distances of tooth location by age, gender, and dentate status. Results The AAA canal was found in 94.6% with a mean diameter ± SD of 1.05 ± 0.34 mm. The mean ± SD perpendicular distance from AAA canal to the edentulous alveolar crest at the first (16.02 ± 3.94 mm) and the second molars (16.74 ± 3.51 mm) were significantly shorter than the second premolar region. The intrasinus mediolateral position of the canal (72.5%) was the most common in concordance with the all-in type mediolateral route (50.9%). Conclusion The intrasinus mediolateral position of the AAA canal is a common structure in the lateral wall of maxillary sinus, which could be detected with CBCT images. The all-in type is the most prevalent mediolateral route among a novel 7-type classification system of AAA routes. Owing to the short distance between the AAA canal and the alveolar crest in the first and second molar locations, CBCT images should be taken to investigate the AAA position and route before sinus lift procedure to prevent the risk of hemorrhage. Keywords Cone beam computed tomography · Posterior superior alveolar artery · Intraosseous anastomosis · Alveolar antral artery · Sinus lift
Introduction Sinus lift has become a common oral surgery procedure to rehabilitate an atrophic posterior maxilla. In brief, the classic sinus lift procedure starts with forming a lateral window of the maxillary sinus by osteotomies. The window is removed except for the maxillary bone and rotated in medially [1]. The Schneiderian membrane is then detached from the * Kornkamol Kretapirom [email protected] 1
Master of Science Program in Implant Dentistry, Mahidol University, Bangkok, Thailand
Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Mahidol University, 6 Yothi Street, Ratchathewi, Bangkok 10400, Thailand
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ma
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