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A radiolucent bite-block apparatus.

Abstract

A bite-block, patient immobilization apparatus has been constructed using all plastic parts. The apparatus may be used in C-T scanning without detriment to the images produced. The construction details are given and the procedure used to produce a bite block is described. A method to reduce electron backscattering onto the buccal mucosa from metal fillings is given.

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BibTeXRIS

D Jones, M D Hafermann. 1987. A radiolucent bite-block apparatus.. https://doi.org/10.1016/0360-3016(87)90270-7

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Multidetector CT and dentascan software: dosimetric evaluation and technique improvement.

PURPOSE: The development of new operative techniques in oral and maxillofacial surgery within the last few years has led to an increasing demand for Dentascan examination, also in paediatric patients. It is necessary to modify acquisition parameters to reduce the absorbed dose. The aim of this study was to define a Dentascan protocol in which a reduced X-ray dose could be used. MATERIALS AND METHODS: Dosimeters were applied to the eyes, mouth, parotid glands, thyroid and back of the neck of an anthropomorphic Plexiglas phantom that underwent multidetector computed tomography (MDCT) Dentascan examinations. Both 120kV and 80 kV were used to study the mandibular and maxillary arches. RESULTS: Examinations obtained with the 80 kV protocol showed a ten-fold reduction in the absorbed dose, without affecting image quality. CONCLUSIONS: We suggest a Dentascan protocol that reduces the X-ray dose administered to the patient while ensuring the same high diagnostic accuracy.

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