Comparison of posterior alveolar canal location measured on computer tomography scan with cadaveric measurement of posterior superior alveolar foramen in Japanese samples. Issue 8 (August 2019)

• Record Type: Journal Article
• Authors: Uchida, Y.; Aijima, R.; Danjo, A.; Yamashita, Y.; Shibata, K.; Kuraoka, A.
• Is Part Of: International journal of oral & maxillofacial surgery. Volume 48:Issue 8(2019:Aug.)
• Page Start: 1122
• Page End: 1127
• Publication Date: 2019-08
• Subjects: Posterior superior alveolar artery -- posterior superior alveolar foramen -- posterior alveolar canal -- bleeding -- maxillary tuberosity; Mouth -- Surgery -- Periodicals; Maxilla -- Surgery -- Periodicals; Dentistry -- Periodicals; Dentistry, Operative; Oral Surgical Procedures; Surgery, Oral; Dentistry; Maxilla -- Surgery; Mouth -- Surgery; Electronic journals; Periodicals; 617.52059
• DOI: 10.1016/j.ijom.2019.02.016
• Languages: English
• ISSNs: 0901-5027

Abstract

Abstract: The aim of this study was to analyse anatomical characteristics of the most posterior alveolar canal (PAC) on computed tomography (CT) images and the posterior superior alveolar foramen (PSAF) physically identified in cadaveric samples, to avoid injuring the posterior superior alveolar artery (PSAA) during surgery in the maxillary tuberosity region. The study included 125 hemi-heads of 64 Japanese cadavers. Simple CT data of the maxillary bone region of the samples were obtained and analysed using measurement software. The alveolar crest (AC) and the PAC were identified to calculate the shortest distance between the AC and the PAC (AC-PAC). Then the samples were dissected to measure physically the shortest distance between the AC and the PSAF (AC-PSAF). The data were analysed statistically. The mean value and standard deviation were 20.7 ± 4.2 mm for AC-PAC and 20.7 ± 4.3 mm for AC-PSAF. The intraclass correlation coefficient between AC-PAC and AC-PSAF was 0.98. The CT-measured PAC locations were found to be almost identical to the PSAF positions identified physically in the samples. Preoperative CT localization of the PAC aids in avoiding injury to PSAA, while preoperative CT evaluation is important for each case due to significant individual variability in the anatomical PAC and PSAF locations.