The Effects Of Radiation Exposure On Medical Radiation

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Why is this a problem About 15% of the ionizing radiation exposure to the people comes from man-made sources and almost all of these exposures are due to medical radiation, which is vastly from diagnostic and therapeutic sources(9). Out of 3 mSv annual global per caput effective dose (2000), 2.4 mSv is from natural background and 0.4 mSv from diagnostic medical exams(5,9). and since then many new therapeutic and diagnostic methods have been implemented making the exposure dose due to medical radiation to go up. The problem with this increase is that elevated risk of radiation-related cancers such as of the thyroid, salivary gland, central nervous system, skin, and breast as well as leukemia.(1,6) because of these observed risks the use…show more content…
Although there are recommendations and guidelines they are modified by criteria where the patient is at high risk for dental caries(9). How to minimize dose Dental X-rays accounts for about 2.5 percent of the effective dose from all forms of medical radiographs (75). As previously discussed, dental radiation exposure is low; but, it is the dentists’ responsibility to follow the guidelines such as ALARA (As Low as Reasonably Achievable) and ALADA (As Low as Diagnostically Acceptable) principles(3). Some of the ways that can that be helpful in minimizing dosage are use of the fastest image receptor compatible with the diagnostic task (F-speed film or digital)(1), proper film exposure and processing techniques, collimation of the beam to the size of the receptor, use of protective aprons and thyroid collars, (8) and limiting the number of images obtained to the minimum necessary to obtain essential diagnostic information. Frequency of exams As previously mentioned Dental professionals need to carefully examine the patient health history, oral clinical observation and caries risk assessment to determine if radiographs are necessary and keep the exposure ALARA (As Low as Reasonably Achievable). When it comes to determining caries, a (child/adolescent) patient with clinical caries and increased risk will need Posterior bitewing exam at 6-12 month
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