Effect of mandibular titanium reconstructive plates on radiation dose

American Journal of Otolaryngology
Francisco V de Mello-FilhoCatherine E Miles

Abstract

The effects of the mandibular titanium alloy plates on the radiation-tissue interactions are not clearly defined. Photon beam radiation may be modified after striking a metal plate used to reconstruct the mandible after oncologic surgery. The purpose of this study was to determine, in a human mandible model, the effects of a titanium alloy plate on the radiation dose received at the bone/titanium (plate and screws) interface and bone/soft tissue interface. We used an adult male human head and neck ex vivo model. A medical grade titanium alloy 6-hole plate, 2.4 mm, was fixed in the midline of the mandible. The mandible was then irradiated using 6 MV photon beams. Thermoluminescent dosimeters were used to measure the radiation doses anterior and posterior to the mandible. The experiment was then repeated without the plate and screws. The difference between the average doses received by the mandible reconstructed with plate/screws and a mandible without plate/screws was +2.1% at the buccal aspect of the mandible and +3.0% at the lingual aspect; respective P values were.741 and .323. Thus, these differences were not statistically significant. In this study, we did not observe any significant influence of titanium alloy plate/screws...Continue Reading

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Citations

Jul 15, 2004·Current Opinion in Otolaryngology & Head and Neck Surgery·Ritvik P Mehta, Daniel G Deschler
Dec 1, 2006·Medical Dosimetry : Official Journal of the American Association of Medical Dosimetrists·Hassisen PatoneDavid Roberge
Sep 9, 2015·Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology·Bogusław BrożynaRomuald Krajewski
Sep 11, 2014·Journal of Applied Clinical Medical Physics·Keyvan JabbariMahnaz Roayaei

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