Radiobiologic risk estimation from dental radiology. Part II. Cancer incidence and fatality.
With the use of the measured absorbed doses from part I of this article, the specific radiobiologic risk to the patient from (1) five different panoramic machines with rare-earth screens, (2) a 20-film complete-mouth survey with E-speed film, long round cone, (3) a 20-film complete-mouth survey with E-speed film, long rectangular cone, (4) a 4-film interproximal survey with E-speed film, long round cone, and (5) a 4-film interproximal survey with E-speed film, long rectangular cone, was calculated. The estimated risks are expressed in two ways: the probability of radiation-induced cancer in specific organs per million examinations and the probability of expression of a fatal cancer per million examinations. The highest risks calculated were from the complete-mouth survey with the use of round collimation. The lowest risks calculated were from panoramic radiography and four interproximal radiographs with rectangular collimation.
Underhill
T E
TE
Department of Dental Diagnostic Sciences, School of Dentistry, University of Texas Health Science Center, San Antonio.
Kimura
K
K
Chilvarquer
I
I
McDavid
W D
WD
Langlais
R P
RP
Preece
J W
JW
Barnwell
G
G
D000328:Adult; D005260:Female; D006801:Humans; D007953:Leukemia, Radiation-Induced / Q000453:epidemiology / Q000401:mortality; D008297:Male; D008875:Middle Aged; D009381:Neoplasms, Radiation-Induced / Q000453:epidemiology* / Q000401:mortality; D011829:Radiation Dosage; D011853:Radiobiology; D011861:Radiography, Dental / Q000009:adverse effects / Q000295:instrumentation; D011862:Radiography, Panoramic / Q000009:adverse effects / Q000295:instrumentation; D012307:Risk Factors; D014962:X-Ray Film; D014963:X-Ray Intensifying Screens