Effects of radiotherapy on mandibular reconstruction plates.
The radiation dose in the vicinity of metal mandibular implants was measured using lithium fluoride (TLD-100) thermoluminescent dosimeters. Dosimeters were positioned in contact with Vitallium and stainless steel (AO) reconstruction plates. Simple transmission was measured with a solid state detector removed from the implant at a depth of 2.5 cm in a polystyrene phantom. The measurements were made for a 6 mV photon beam from a linear accelerator. At points in front of, but in contact with the metal implants, the dose was greater by 23 percent for Vitallium and 17 percent for stainless steel than that with no implant. At contact behind the implant, the dose was reduced considerably: 14 percent for Vitallium and 13 percent for stainless steel. At remote points behind the implant, the dose was reduced due to attenuation.
Castillo
M H
MH
Department of Surgery, State University of New York, Buffalo.
Button
T M
TM
Doerr
R
R
Homs
M I
MI
Pruett
C W
CW
Pearce
J I
JI
D001860:Bone Plates; D002858:Chromium Alloys / Q000528:radiation effects*; D006801:Humans; D008334:Mandible / Q000528:radiation effects*; D008961:Models, Structural; D011829:Radiation Dosage; D011878:Radiotherapy; D013193:Stainless Steel / Q000528:radiation effects*; D013819:Thermoluminescent Dosimetry; D014800:Vitallium / Q000528:radiation effects*
D002858:Chromium Alloys; D013193:Stainless Steel; D014800:Vitallium