Influence of maxillomandibular positioning in cone beam computed tomography for implant planning

• Published in: International journal of oral and maxillofacial surgery 2013-07, Vol.42 (7), p.880-886
• Main Authors: Visconti, M.A.P.G, Verner, F.S, Assis, N.M.S.P, Devito, K.L
• Format: Article
• Language: English
• Subjects: cone beam computed tomography; Cone-Beam Computed Tomography - methods; Dental Implantation; dental implants; Dentistry; Humans; Imaging, Three-Dimensional - methods; Jaw, Edentulous - diagnostic imaging; Mandible - anatomy & histology; Maxilla - anatomy & histology; Patient Care Planning; patient positioning; Patient Positioning - instrumentation; Patient Positioning - methods; Radiography, Dental - instrumentation; Radiography, Dental - methods; Surgery
• ISSN: 0901-5027; 1399-0020
• DOI: 10.1016/j.ijom.2013.03.001

Abstract The aim of this study was to evaluate the influence of changes in maxillomandibular positioning during cone beam computed tomography (CBCT) imaging on the planning of dental implants. Ten skulls were marked bilaterally with metal spheres in four regions: incisors, canine, premolars, and molars. CBCT scans were obtained in seven positions: standard position (SP), displacements of 10° and 20° above and below the SP, and lateral displacements of 10° and 20° from the SP. Subsequently, bilateral measurements of the height and width of the maxilla and mandible were performed on all images. The results showed that the position with a displacement of 20° above the SP presented the greatest differences in the measurements of bone height and width. In the bilateral comparisons, the maxillary bone width showed the greatest differences, especially for the regions of the premolars and molars. It is concluded that alterations of positioning during the acquisition of CBCT images can lead to alterations in the measurements of bone height and width, which may result in errors in implant planning and cause damage to anatomical structures.