Radiation dose from x-ray examinations of impacted canines: cone beam computed tomography vs. two-dimensional imaging.

Related Articles

Radiation dose from x-ray examinations of impacted canines: cone beam computed tomography vs. two-dimensional imaging.

Dentomaxillofac Radiol. 2018 Jan 05;:20170305

Authors: Kadesjö N, Lynds R, Nilsson M, Shi XQ

Abstract
OBJECTIVES: To compare the radiation dose to children examined for impacted canines, using two-dimensional examinations (panoramic and periapical radiographs) and cone-beam computed tomography (CBCT).
METHODS: Organ doses were determined using an anthropomorphic 10-year child phantom. Two CBCT devices, a ProMax3D and a NewTom5G, were examined using thermoluminescent dosimeters. For the panoramic radiograph, a Promax device was used and for periapical radiographs, a Prostyle device with a ProSensor digital sensor was used. Both the panoramic and the intraoral devices were examined using Gafchromic-QR2 dosimetric film placed between the phantom slices.
RESULTS: ProMax3D and NewTom5G resulted in an effective dose of 88 µSv and 170 µSv respectively. A panoramic radiograph resulted in an effective dose of 4.1 µSv, while a periapical radiograph resulted in an effective dose of 0.6 µSv and 0.7 µSv using a maxillary lateral projection and central maxillary incisor projection respectively.
CONCLUSIONS: The effective dose from CBCT ranged from 140 times higher dose (NewTom5G compared to two periapical radiographs) to 15 times higher dose (ProMax3D compared to three periapical and one panoramic radiograph) than a two-dimensional examination.

PMID: 29303367 [PubMed - as supplied by publisher]

http://ift.tt/2EgcmMP