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Can Pregnant Women Take Dental X-rays and Oral CT?

“Doctor, I’m pregnant. May I not take dental X-rays? “
“Doctor, I’m pregnant. Can I have a miscarriage or a teratogram with dental X-rays? “
Pregnant women have any concerns about taking X-rays. Please be sure to respect the opinions of your obstetrician and gynecologist. The profession of the obstetrician and gynecologist will definitely give you suitable advice according to your individual situation and differences.
According to the American Dental Association (ADA) website, “When a pregnant woman needs dental X-rays, including a single dental apex X-ray, or a dental ring X-ray while standing in a circle, or even a dental cone The beam computer tomography is relatively safe under the condition of protection during the shooting process.
The field of radiation is very wide, with natural radiation, man-made radiation, free radiation, non-free radiation, occupational exposure, medical exposure and so on.
Next we will explain the diagnostic nature, which is what we usually call taking a dental digital X-ray examination. Its radiation dose is very low, much lower than the medically used radiation dose.
Our purpose is to let everyone know that the dose of dental digital X-ray irradiation is very low. It is not necessary to give up the medical diagnosis in order to be afraid and lose the golden point of medical intervention.
The cumulative exposure is mentioned here. Cumulative exposure refers to the radiation dose accumulated over the course of a year or lifetime. If converted to the annual dose limit of the safety standard for free radiation protection.
For dental single-tooth digital X-rays, a dose of less than 200 per year is more appropriate;
For digital dental X-rays, a dose of less than 100 per year is more appropriate.
For dental cone-beam computed tomography, doses within 1-90 sheets per year are more appropriate. 〈Dental cone beam computed tomography can have different doses in a small range-a large range.
Summary: This means that a pregnant woman or a patient visits an oral institution for a short consultation time of 30-60 minutes. One or two dental digital X-rays may be taken and taken under standard protection. This dose is equivalent. safe. But there can also be endless abuses.
Use it, use protection
Now that the dental digital X-ray radiation dose is very low, if the dentist is assessing the disease, if auxiliary X-ray examination is needed, the patient can temporarily set aside so-called prejudice, prejudice, and hearing. As long as you are properly protected, such as wearing lead clothing, you don’t need to worry too much. Let the dentist examine and treat you well, so as not to become ill and regret it.
Medical decisions are never absolute
Of course, the data is data, even if many studies have said that the fetus is less likely to fail at a safe dose. But just in case, life will always be just in case, the first-class birth or the baby with problems, the patient or the family will think that this is because dental X-rays were taken during pregnancy? This is a difficult question, is it a dilemma of causality?
Now, even if the information is more developed or the evidence of empirical medical data is obvious, the clinical will be mixed with human free will and values. The evolution of many medical behaviors is ultimately good for patients? Or do you and I have to share?
Life is always making trade-offs
We don’t have to change the values ​​of others, nor can we change them. Therefore, the CDC’s data specifically states: “How to communicate any type of risk with pregnant women depends on many factors. First, the patient’s educational background and language and cultural barriers are considered. However, the mother’s stress level and other potential psychological effects must also be considered. A
It can be seen that our medical decision-making still needs to share this decision with the patient after providing relatively moderate information communication. Life is always spent in choices, and medical decisions are constantly sad and joyous in choices.
Intimate reminder: pregnant women have any doubts about taking X-rays. Please be sure to respect the opinions of your obstetrician and gynecologist. The profession of the obstetrician and gynecologist will definitely give you suitable suggestions according to your individual situation and differences.
References
A single reference dose to the fetus
According to the US Centers for Disease Control and Prevention (CDC), a single acute dose (a dose delivered in a short time, usually within minutes) for a fetus is less than 0.05 Gy (Gore) is a safe range.
Compared to the “Gore” absorbed dose unit, the radiographic factor of our dental X-ray is 1, so the absorbed dose of 0.05 Gy (Gore) can be regarded as the equivalent dose of 50 mSv. After a series of simplifications and calculations, it may be simply regarded as an effective dose of 50 mSv.
Second, the single reference dose for the average person
The annual dose limit for the general public is 1 millisievert per year (this figure does not include natural background radiation and medical radiation). The American Association of Physicists in Medicine recommends that when a single medical dose is exposed below 50 millisieverts, or the cumulative dose of multiple short-term multiple medical radiation exposures is below 100 millisieverts, the risk may be too high. Is too low to be evaluated, or there is no risk.
Dose of dental X-rays
Dental single tooth X-ray photography: 0.005 mSv.
Dental ring X-ray photography: 0.01 mSv.
Dental cone beam computed tomography: 0.011-1.073 millisievert <small range-large range>.
Fourth, simple calculations
Fetus: A single acute dose, approximately 10,000 <50 / 0.005 = 10000> dental single tooth X-rays can be taken in a single shot.
The average person: A single acute dose, approximately 10,000 <50 / 0.005 = 10000> dental single tooth X-rays can be taken in a single shot.
Ordinary people: A single acute dose, about 5,000 <50 / 0.01 = 5000> dental ring X-rays can be taken in a single shot.
The average person: A single acute dose, approximately 4500-46 dental cone beam computed tomography can be taken in a single shot.
In fact, we are constantly receiving background radiation in our daily life. The average annual background radiation dose per person in Taiwan in China is 1.6 millisieverts. Even when flying from Taiwan to the west coast of the United States, the background radiation is 0.09 millisieverts. Eph.
It can be seen that the digital X-rays taken by dentistry are very low in the diagnostic part of medical radiation.

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