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Title: Presurgical CBCT assessment of maxillary neurovascularization in relation to maxillary sinus augmentation procedures and posterior implant placement
Authors: Pinheiro Nicolielo, Laura Ferreira
Van Dessel, Jeroen
Jacobs, Reinhilde
Fischer Rubira-Bullen, Izabel Regina
Issue Date: 2014
Source: SURGICAL AND RADIOLOGIC ANATOMY, 36 (9), p. 915-924
Abstract: To provide more information to clinicians planning sinus grafting and maxillofacial surgical interventions, the present study evaluated the prevalence, diameter and location of the superior alveolar canals (SAC) using CBCT images. The maxillary sinus CBCT scans (i-CAT Classic(A (R)), ISI, USA) of 100 adult patients (67 women and 33 men) aged 20-79 years [mean (SD) 40 (15)] were examined. A dentomaxillofacial radiologist observed the SAC based on CBCT image data and more specifically the parasagittal views to assess SAC's diameter and location. The anterior and posterior SAC, double ASAC, intraosseous anastomoses and the extension of the anterior SAC to the piriform aperture were observed in 100, 73, 24.5, 38.5 and 84 % of the cases, respectively. The anastomosis was located between canine and first premolar in 43 % of the cases. The SAC diameters were in 80 % of the cases a parts per thousand currency sign1 mm, remaining canals had a diameter between 1 and 2 mm. The distance of the SAC to the alveolar crest ranged between 2.42 and 44.6 mm. The anterior SAC was more prevalent in the upper (53 %) and middle (44 %) thirds of the maxillary sinus, while the posterior SAC was more prevalent in the middle (36 %) and lower thirds (64 %). The distance was significantly bigger in men in some tooth positions. Based on the present findings, one-fifth of the patients may have a diameter of the SAC > 1 mm, large enough to cause bleeding and/or paraesthesia. CBCT imaging may assist surgeons to plan grafting and osteotomy procedures, while avoiding these neurovascular structures.
Notes: [Pinheiro Nicolielo, Laura Ferreira; Van Dessel, Jeroen; Jacobs, Reinhilde] Univ Leuven, Fac Med, Dept Imaging & Pathol, OMFS IMPATH Res Grp, B-3000 Leuven, Belgium. [Pinheiro Nicolielo, Laura Ferreira; Van Dessel, Jeroen; Jacobs, Reinhilde] Univ Hosp Leuven, B-3000 Leuven, Belgium. [Pinheiro Nicolielo, Laura Ferreira; Fischer Rubira-Bullen, Izabel Regina] Univ Sao Paulo, Bauru Sch Dent, Dept Stomatol, BR-17012901 Sao Paulo, Brazil. [Martens, Wendy; Lambrichts, Ivo] Univ Hasselt, Fac Med, Dept Morphol, B-3590 Diepenbeek, Belgium.
Keywords: cone-beam computed tomography; anatomy; maxillary sinus; dental implants; sinus floor augmentation;Cone-beam computed tomography; Anatomy; Maxillary sinus; Dental implants; Sinus floor augmentation
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ISSN: 0930-1038
e-ISSN: 1279-8517
DOI: 10.1007/s00276-014-1309-3
ISI #: 000344346800013
Rights: © Springer-Verlag France 2014.
Category: A1
Type: Journal Contribution
Validations: ecoom 2015
Appears in Collections:Research publications

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