Minimum size and positioning of imaging field for CBCT scans of impacted maxillary canines

Show full item record



Permalink

http://hdl.handle.net/10138/312691

Citation

Pakbaznejad Esmaeili , E , Ilo , A-M , Waltimo-Sirén , J & Ekholm , M 2020 , ' Minimum size and positioning of imaging field for CBCT scans of impacted maxillary canines ' , Clinical Oral Investigations , vol. 24 , no. 2 , pp. 897-905 . https://doi.org/10.1007/s00784-019-02904-1

Title: Minimum size and positioning of imaging field for CBCT scans of impacted maxillary canines
Author: Pakbaznejad Esmaeili, Elmira; Ilo, Anne-Mari; Waltimo-Sirén, Janna; Ekholm, Marja
Contributor: University of Helsinki, HUS Head and Neck Center
University of Helsinki, Clinicum
University of Helsinki, HUS Head and Neck Center
University of Helsinki, HUS Head and Neck Center
Date: 2020-02
Language: eng
Number of pages: 9
Belongs to series: Clinical Oral Investigations
ISSN: 1436-3771
URI: http://hdl.handle.net/10138/312691
Abstract: Objectives In children and adolescents, cone-beam computed tomography (CBCT) is frequently used for localization of unerupted or impacted teeth in the anterior maxilla. CBCT causes a higher radiation dose than conventional intraoral and panoramic imaging. The objective was to analyze the location of impacted canines in a three-dimensional coordinate and thereby optimize the CBCT field-of-view (FOV), for radiation dose reduction. Materials and methods Location of 50 impacted maxillary canines of children under 17 years was retrospectively evaluated from CBCT scans. The minimum and maximum distances of any part of the right- and left-side canines to three anatomic reference planes were measured to assess the adequate size and position of a cylindrical image volume. Results A cylinder sized 39.0 (diameter)x33.2 (height) mm, with its top situated 13.8 mm above the hard palate, its medial edge 8.4 mm across the midline, and anterior edge 2.5 mm in front of the labial surface of maxillary central incisors fitted all the analyzed canines. Conclusions In this sample, the FOV required for imaging maxillary impacted canines was smaller than the smallest FOV offered by common CBCT devices. We encourage development of indication-specific CBCT imaging programs and aids to facilitate optimum patient positioning.
Subject: Cone-beam computed tomography
Radiation protection
Child
Cuspid
Tooth
Impacted
BEAM COMPUTED-TOMOGRAPHY
CT
CHILDREN
IMAGES
313 Dentistry
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
PakbaznejadEsma ... izeAndPositioningOfIma.pdf 541.1Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record