Dental ct scan risks. S. 5% (1 in 3) for women and 44. Your doctor may use this technology to produce three dimensional (3-D) images of your teeth, soft tissues, nerve pathways and bone in a single scan. Well, modern dentists will say yes—it is an absolute necessity. Aug 3, 2018 · This study evaluated the patient radiation dose and estimated the radiation cancer risk on dental CBCT according to the calculations by the Monte Carlo simulation method. Sep 8, 2019 · The sample was composed of patients treated for SCDDT from 2002 to 2018 in our Department of Otorhinolaryngology. To assess the associated risks, it is essential to understand the examination techniques, equipment type, and amount of radiation emitted. We at Implants Pro Center™, San Francisco, use the CT equipment to produce three dimensional (3-D) images of your jaw bone, roots, teeth, soft tissues, nerve pathways, skull, and bone in a single scan. They can provide stunningly detailed images of the inside of the brain, but these scans aren't without risk. If contrast dye is used, there is a risk for allergic Feb 23, 2024 · High-resolution pictures can be produced by scanning in an axial plane with thin sections and contiguous or overlapping scans (maxilla: 20-30 axial slices; mandible: 30-35 axial slices, 1. Computed tomography (CT) scans are often the first line of diagnosticians who need to understand a problem a Doses above 100 mSv per year (about 4-10 CT scans, depending on scan type and body type) increase the absolute lifetime risk of cancer by about 0. 1 percent. Sep 9, 2012 · Conclusion. Natural background radiation is around 300 mrem. 5%. This level of precision enhances the success rate of dental implant procedures and reduces the risk of complications. For the dentist, it offers the ability to visualize intricate structures inside the mouth, such as root canals, nerves and sinuses (air Before having a CT screening procedure, carefully investigate and consider the potential risks and benefits and discuss them with your physician. It has lower radiation exposure than conventional CT, but it is not used routinely and may have some risks. It’s called a cone beam CT, where an X-ray beam in the shape of a cone is moved around the patient to create the images. When used appropriately Nov 11, 2022 · Radiation Doses for Common CT Scans. For dental professionals, a CT scan in dentistry makes it far easier May 3, 2024 · Supported by (click here for details) Together, dedicated to improving the understanding of radiation risks from medical imaging. In children, doses above 50 mSv/year increase the risk of cancer. Moreover, the cancer risks were positively correlated with radiation dose and CT sites. Risks of CT Scan. When you have a CT scan, you will lie flat, and a machine shaped like a doughnut will scan your body. This is a quick and painless test. ( 6 ) Other studies have calculated that the risk of a single CT scan causing cancer later in life can range from 1 in 10,000 to 1 in 2,000 to as Jul 1, 2017 · A retrospective study was conducted. Computed tomography. Common types of CT scans and the amount of radiation you would absorb from them include: Belly and pelvis: 10 mSv, equal to about 3 years of background Computed tomography (CT)/CAT scan. 2% of the study’s 470 adult patients who presented with an odontogenic infection at the emergency department underwent an unneeded CT scan. 7% to 12%. 10 The American Dental Association (ADA), American Academy of Oral and Maxillofacial Radiology (AAOMR), and the American College of Radiology all support the concept that health care professionals adhere to the “as low as Aug 27, 2019 · A particular type of x-ray equipment, Dental cone beam computed tomography (CT) is widely used for regular dental or facial x-rays. X-rays are said to be risky. When compared to traditional CT scans, the 3-D CT scan reduces the amount of radiation up to 98. Your results will appear here but will be deleted after 20 minutes of inactivity. 4 mrem) Limbs and joints: 0. 19 The volume CT dose index is useful for describing the radiation output from a CT scan-ner and optimizing CT protocol parameters. Susanna Lee, HMS assistant professor of radiology at Massachusetts General Hospital, was the lead researcher on one of the studies about the scans. Our bodies are subject to harm when exposed to high radiation levels; thankfully, with CT scans, there’s a greatly reduced amount. Among patients with low-risk infections, 78. 10 100 1000. (CT) has been a boon for medical care. A CT scan gives a detailed 3D picture of the inside of a patient's body. Wed. Feb 9, 2023 · Dentists use computed tomography (CT) scans to capture 3D dental X-rays of your teeth, jaws, joints, nerves and sinuses. Some benefits of cone beam CT scans for dental implants include: CBCT scans make it easy for the dentist to measure and localize the available jawbone. However, CT scans also dose patients with ionizing radiation, a known human carcinogen, posing a potential downside for public health. Nov 19, 2020 · On the market there are currently two mainstream 3D radiographic imaging modalities available for dentistry: cone beam computed tomography (CBCT) and conventional computed tomography (CT). A new scanning device that emits significantly more radiation than conventional methods is gaining popularity among dentists despite the potential risks to young patients, an examination by The New York Times has found. Alike medical CT, 3 dimensional evaluation of Oct 16, 2018 · Considerations include the justification for requiring the 3-dimensional scan and the risk-to-benefit analysis done in preparation of every scan. CBCT reduces radiation exposure compared to traditional medical CT scans while still providing high-quality images, making it a safer and more suitable option for dental imaging. (In this group, 33% had received more than five CT scans; 5%, more than 22 scans; and 1%, more Jan 1, 2011 · The 3-D information obtained from a CBCT exam offers the potential of enhanced diagnosis for a wide range of clinical applications, typically at a lower dose than medical multislice CT (see chart below). repeated exposures) and in young patients. CT scans have transformed medicine. Below these numbers, we haven't been able to measure any increase. Detected findings were classified as “tooth loss, dental restorations or procedures and dental Oral Maxillofacial Radiology. In large doses, radiation can cause serious tissue damage and increase a person’s risk of later developing cancer. The answer to this very controversial question is no. I want to get another opinion. The ADA encourages dentists and patients to discuss dental treatment recommendations, including the need for X-rays, to make informed decisions together. Kids are likely to get regular X-rays at dental check-ups. They’re carried out in hospital by specially trained operators called radiographers and can be done while you’re staying in hospital or during a Nov 21, 2018 · In a few studies examining health effects related to dental X-ray exposure, possibly increased risks of meningioma and thyroid cancer were suggested. When used appropriately, the benefits of a CT scan far exceed the risks. Keywords: Dental radiography, Health, Radiation exposure. 06 mSv (6 mrem) Abdomen: 0. The radiation exposed by a scanner, a CT scan or an X-ray is minimal. The patient lies down on the exam table, which is moved in and out of a large donut-like ring. Mar 22, 2019 · Computed tomography (CT) is used excessively for scanning dental infections even though history and physical examinations can help correctly diagnose higher-risk infections before having patients undergo the scanning, which is associated with high costs and long-term potential for cancer, according to researchers at University of Florida Health Mar 7, 2022 · CBCT stands for: Cone beam computed tomography (CBCT). This makes it possible to do a virtual implant placement with accuracy and precision. Sep 30, 2021 · For the group as a whole, the increase in risk was slight — 0. This overview aims to explain the basic differences between these technologies, and to illustrate their use including some clinical cases. Here’s an example of a CBCT scan: Exposure to ionising radiation is associated with risks of various types. CBCT was embraced into the dental settings very rapidly due to its compact size, low cost, low ionizing radiation exposure when compared to medical computed tomography. These are then digitally compiled into one three-dimensional (3D) image. CT-Scans: A chest CT scan clocks in at about 200mrem. Go to: Jul 21, 2010 · This is in the range of the typical organ doses from two to three CT scans. The newest technology makes CT’s Introduction. Dental CT scanners are capable of providing excellent 3-dimensional diagnostic images of hard tissues with lower radiation doses than medical multislice CT scanners of the same area. A low-dose chest CT scan is about 1. The amount of radiation used during a CT scan is considered minimal; therefore, the risk for radiation exposure is low. Calculate your dose and estimate cancer risk from studies including CT scans, x-rays, nuclear scans and interventional procedures. In addition, dental CBCT scans can be collimated to the desired area, further lowering a patient’s exposure to radiation. 004 mSv (0. The undoubted truth is that these kinds of medical exams are way less dangerous than they were some years ago. Aug 27, 2023 · Posted August 27, 2023. They can show the soft A normal X-ray can’t measure bone depth, thickness or density. The meta-analysis highlights the awareness of potential cancer risks of Typical effective doses are for: CBCT procedures (based on median values from literature): 50 μSv or below for small- or medium-sized scanning volumes, and 100 μSv for large volumes. They assume that there’s no risk-free level of radiation exposure and recommend only medically necessary imaging tests. Sep 8, 2022 · The majority of our CT scans have a radiation effective dose equivalent to four or five hours of high-altitude air flight, or 11 to 15 days of normal background radiation in the United States. This advanced technology provides invaluable information for accurate diagnosis, treatment planning, and the evaluation Jul 6, 2023 · By using CT scans, dentists can make informed decisions regarding implant size, location, and orientation. The dose from a conventional panoramic radiograph (24 microsieverts) is equivalent to that which would be received Jul 21, 2014 · The BEIR VII age- and gender-dependent dose-risk model was applied to estimate the lifetime attributable cancer risk. It is sometimes called a CBCT scan. A brain scan must demonstrate very subtle density differences between grey and white matter, and is typically performed at around 350mAs per slice, whereas a dental CT scan can be Feb 23, 2018 · A dental CT scan is a little different. The authors conducted a study to reassess patients' risk related to common dental radiographic exposures using the 2007 ICRP recommendations. A dental CAT scan or dental CT scan -an abbreviated form of Computerized Axial Tomography- is a device that uses X-rays to obtain three-dimensional images of the patient’s teeth and maxillary bones -upper and lower-. Using a 3D dental CBCT scan and examining the images from every direction helps your dentist to accurately plan the Mar 21, 2013 · Experts weigh risks of CT scans. Ref: ISBN 978-0-85951-681-5. A computerized tomography scan, also called a CT scan, is a type of imaging that uses X-ray techniques to create detailed images of the body. Dental infections have always been common and were one of the leading causes of death hundreds of years ago. 02 mSv (2 mrem) Dental x-ray (four bitewings): 0. Keep in mind, the overall lifetime risk of developing an invasive cancer is 37. “There’s a risk of developing a tumor if you have a lot of CT scans, but that doesn’t usually happen Mar 19, 2024 · Dental cone beam computed tomography (CT) is a special type of x-ray equipment used when regular dental or facial x-rays are not sufficient. A CT scan can help diagnose different medical conditions. If you are pregnant or suspect that you may be pregnant, you should notify your physician. and in inflammatory conditions such as dental abscesses. Mar 15, 2023 · A CT scan uses computers and rotating X-ray machines to create cross-sectional images of the body. The CT scanner uses x-rays to take pictures of cross-sections of the body, which are then digitally assembled to give physicians detailed, cross-sectional views of internal organs and tissues. ) device. Dental cone beam CT scan (CBCT) A dental cone beam CT scan is a type of CT scan. The scan creates 3D images of your jaws and teeth. 7 mSv (70 mrem) Nov 9, 2018 · CT is a scan that involves the use of ionising radiation. CT scans are an essential tool in dental implant planning, ensuring optimal treatment outcomes and patient satisfaction. Given the current use of CT technology, this estimate will be getting higher. Imaging studies are important adjuncts in the diagnostic evaluation of acute and chronic conditions. To our knowledge, this is the first study to evaluate patient doses in CBCT examinations and other dental imaging modalities and techniques in relation to radiation risk and clinical indication. Dec 2, 2017 · The introduction of cone beam computed tomography (CBCT) devices, changed the way oral and maxillofacial radiology is practiced. Dental CT: Is it dangerous? As we have already seen, dental CAT scans are necessary for the planning of a large part of dental treatments. These images provide more detailed information than typical X-ray images. This advanced technology allows dentists to accurately diagnose and plan treatment for various Dental issues, such as impacted teeth, infections In 2007, the International Commission on Radiological Protection (ICRP) revised estimates of the radiosensitivity of tissues including those in the maxillofacial region. More studies with a large population and prospective design are needed to elaborate these associations further. Smoking five cigarettes a day means you inhale about 1300 mrem a year. This, in turn, means that treatment can be arranged far more quickly for the dental problems you are experiencing. All presented signs and symptoms of sinusitis and had a recent history of dental disease or treatment. Jan 13, 2010 · The dental CBCT imaging method allows dentists to obtain vital three-dimensional information without exposing patients to high levels of radiation that come from medical CT scans. All patients underwent multidisciplinary evaluation, flexible endoscopy and computed tomography (CT) scan. 5 mSv. But for patients who had multiple CT scans, the increase in risk was higher, ranging from 2. Focal enamel and dentin demineralization result in cavity formation. , PA, U. A CT scan shows details of the bones, muscles, fat, and organs. Mar 22, 2019 · For example, 47. “The same doses that people got from the Hiroshima bomb drop, which we now know increases the risk of cancer development,” said Rob Goodman, MB BChir, interim chair and professor of diagnostic radiology and chief of pediatric imaging. To keep medical radiation exposure to a minimum, ask if the results of a scan or test are likely to change the course of your treatment. By generating detailed anatomical pictures, the technology can improve diagnoses, limit unneeded medical procedures, and enhance treatment. g. 6 million adult participants from 3 continents (Asia, Europe and America), this meta-analysis identifies an inordinately increase in cancer risks from CT scans for adults. CT scans are a type of X-ray that provide highly detailed images. 5 mm overlapping) . The dental CT scan helps to diagnose diseases of the jaw, bony structures of the face, nasal cavity and sinuses. Liv Osby March 21, 2013. Mar 7, 2022 · CBCT stands for: Cone beam computed tomography (CBCT). A. CT scans are sometimes referred to as CAT scans or computed tomography scans. The use of X-ray, ultrasonography, CT, nuclear medicine, and MRI has become so ingrained in the culture of medicine, and their applications are so diverse, that women with recognized or unrecognized pregnancy are likely to be evaluated with any one of these modalities 1. Oct 30, 2014 · The risk for a woman aged 30 y is roughly 8 times higher than that of a woman aged 50 y. Unlike a standard dental x-ray, cone beam CT also images the soft tissues of the mouth, including the gums, tongue, and nerves. Designed for dental offices, the device, called a cone-beam CT scanner, provides brilliant 3-D Oct 23, 2021 · Pathology. Exposure to some dental x-rays performed in the past, when radiation exposure was greater than in the current era, appears to be associated with increased risk of intra-cranial meningioma. It then uses a computer to create cross-sectional images, also called slices, of the bones, blood vessels and soft tissues inside the body. Published in the Journal of the National Cancer Institute, the research suggests that CT scans can raise a patient's risk for developing brain tumors. Nov 30, 2022 · Based on 111. Dental cone beam computed tomography is a non-invasive way for dental professionals to Each CT scan exposes patients to between 100 and 500 times the amount of radiation in an X-ray. Some fear that the ionizing radiation emitted from CT scans can harm DNA and cause tumors. 9% . A CT scan in dentistry can benefit the patient because it means a faster and more accurate means of getting information to identify a problem or make a diagnosis. A CT scan of the head is listed as 2mSv. This procedure requires little to no special preparation. 13 January 2010. May 21, 2024 · The exact amount of radiation exposure in an x-ray procedure varies depending on the part of the body receiving the x-ray. So it makes the count as 4 ct so far in the last 7 months. 2% of the 284 CT scans were found to be unnecessary. 3D CBCT scans measure all three, plus the depth of bone near your nerve canals and sinus cavities. Feb 23, 2024 · High-resolution pictures can be produced by scanning in an axial plane with thin sections and contiguous or overlapping scans (maxilla: 20-30 axial slices; mandible: 30-35 axial slices, 1. These statistics are averages and do not predict what is going to happen Jul 2, 2021 · Cone beam computed tomography (cone beam CT, or CBCT) is an advanced x-ray that allows clinicians to take a 3D image of the mouth. The dental CBCT scanner evaluated in this project was the i- CAT® (Imaging Sciences International Inc. Here are answers to some of the more common questions The average digital panoramic radiograph in a dental office exposes the patient to about 8-15 μSieverts (μS) of radiation < a dental conebeam CT is anywhere from 10-100 μS, depending on the size of the scan area and location < a cross-America flight exposes a person to ~60 μS < a medical CT ~2000 μS < annual background radiation ~2500μS. However, many patients ask themselves whether dental CT scans carry any health risks. Advertisement. 7% above the overall lifetime risk of cancer in the United States, which is 42%. The planning of dental implant surgery using CT has been well described. Radiation exposure during pregnancy may lead to birth defects. Computed tomography is an imaging test that uses X-rays and a computer to make detailed images of the body. 5 mm thick and 1 mm apart with 0. An X-ray generator and detector inside the ring rotate around the patient to get pictures from many angles. A dental CT scan, also known as a cone-beam computed tomography (CBCT) scan, is a specialized diagnostic imaging technique used in dentistry to obtain detailed three-dimensional images of the oral and maxillofacial structures. PET-CT is mainly indicated for fraction for high-risk humanpapillomavirus Aug 16, 2012 · About 7 million CT scans are done on U. Oral Maxillofacial Radiology (OMR) is a dental specialty that deals with the use of X-rays (radiographic imaging) to diagnose and treat diseases or disorders of the mouth, teeth, face and jaw (the maxillofacial region). , estimates of their lifetime risk for cancer incidence and mortality per unit Dental cone beam CT is a special x-ray machine that produces 3-D images of the teeth, soft tissues, nerve paths and bone in the face. When facial structures are compromised, the infection originates from necrotic pulp, periodontal pockets, or pericoronitis. CT scans can provide detailed information to diagnose, plan treatment for, and evaluate many conditions in adults and children. However, this refers to a diagnostic scan of the entire brain, whereas a dental CT scan encompasses a much smaller region. Like traditional x-rays, CT scans also use electromagnetic radiation to accurately create the images we need of your mouth and teeth. A dental CT scan emits a lot less radiation than a traditional CT scan. Some examples of common x-ray procedures and approximate exposures are: Single chest x-ray: 0. The ADA recently released new guidance in JADA on safety and regulatory aspects of radiography, which updates portions of the 2012 FDA/ADA recommendations for dental radiographic examination. After undergoing a dental CT scan, the possible cancer risks related to sex and age across various different anatomical regions are not similar. The greatest risk due to a dental CT scan is for a mandible scan when the woman is younger than 45 y. Although high amounts of radiation are dangerous for the body and can cause health risks, 3-D CT scans are minimum radiation exposure. Typical effective doses are for: CBCT procedures (based on median values from literature): 50 μSv or below for small- or medium-sized scanning volumes, and 100 μSv for large volumes. Another term is dental cone beam CT scan. . Content current as of: 12/05/2017 Oct 30, 2014 · The risk for a woman aged 30 y is roughly 8 times higher than that of a woman aged 50 y. And that number is rising about 10% per year. May 7, 2024 · CT scanner Enlarge image. All CT images were obtained with a 64 detector-CT. I have taken a neck CT scan with contrast in December. Dental implants involve placing an artificial tooth root in the jawbone for effective tooth replacement. e. For the NewTom 9000 the range was between 821 and 1686 µGy for Centre 1 and between 292 and 2325 µGy for Centre 2. After undergoing a dental CT scan, the possible cancer risks related to sex and age across various Jun 14, 2013 · Comparison of patient radiation dose among CBCT, helical CT, and conventional dental radiograpahy We have thus shown that the effective dose is a representation of the potential risk of radiation dose to the patient, and in most studies, the effective dose is drived from absorbed dose, which is measured with TLDs by the use of an Low Risks, Big Benefits and What it Means for You. Dr Bruce Howerton, USA. But the risk associated with these tests is worth the benefit, in most cases. Nov 13, 2023 · Dental infections originate in the tooth or its supporting structures and can spread to the surrounding tissues. May 10, 2021 · Like X-rays, 3-D CT scans use electromagnetic radiation to create images. But it's a quantum leap forward in technology and diagnostic precision. It does this using X-rays and information on a computer. 9% (1 in 2) for men regardless of imaging history. When considering dental implants, the necessity of a CT scan, or computed tomography scan, arises for precise planning. Medical x-rays: radiation risks by age and sex of patient; Sep 30, 2021 · For the group as a whole, the increase in risk was slight — 0. Since some people may confuse a CT scan with a traditional panoramic X-ray, it is worth remembering at this point that the CT scan (dental programme) 534 – 2100 22 - 88 * FOV = Field of view To put the numbers into context, the annual radiation dose to a member of the UK population is on average around 2,700 microsieverts. Based on CT use in the United States from 1991 to 1996, it has been estimated that the attributable risk for cancer through age 75 yr due to exposure from CT scans is 0. If one person has a CT scan (with a 10mSv dose) with a new cancer risk of one in 2,000, it does not mean that a second person having a CT scan will then double their risk to one in 1,000. Oct 1, 2015 · A well-publicized article in the New York Times in 2010 discussed the use of CBCT scans in adolescents and the potential risks of radiation-induced carcinogenesis. Dentists can use the CBCT and an optical scan to create a complete virtual model of the patient’s soft Apr 19, 2022 · Each CT scan delivers 1 to 10 mSv, depending on the dose of radiation and the part of your body that's getting the test. Patients with previous facial trauma, operation, invasive tumors and repeated exams were excluded. Cone Beam CT has some similarities with conventional X-rays, and also with the standard CT scans, you would get in a hospital setting. Nov 1, 2020 · The risk increases with the amount of exposure (e. Dec 21, 2018 · Still, radiation experts generally err on the side of caution. --. All of this information is presented to your dentist in a 3D view. CT scan images show more detail than Jul 20, 2023 · Although most sources of radiation are not concerning, diagnostic imaging tests like x-rays, CT scans, and magnetic resonance imaging can have harmful effects on healthcare professionals and patients. Jan 27, 2024 · As with all dental procedures, the small risk associated with the taking of a dental CT scan must be weighed against its potential benefits. As with all sources of artificial ionizing radiation, considered use of this modifiable risk factor may be of benefit to patients. For the SCANORA 3D, average skin doses over the eight locations varied between 484 and 1788 µGy. Precautions taken that should be described to the patient include: the adjustment of exposure settings, the collimated X-ray beam technology, the size of the FOV acquired, and the external precautions I have taken 3 dental CBCT scan for my tooth issue from June to December 2020. Table 1: The range of effective dose from dental CBCT in μSv. The London, England Bills of Mortality in the Nov 22, 2010 · November 22, 2010 8:47 pm. Dental caries are often categorized into 1: Jul 25, 2018 · A new study, however, could change the way doctors and patients feel about CT scans. Nor is it clear that if the same person has two CT scans, two weeks apart, that their risk will increase from one in 2,000 to one in 1,000. Nov 1, 2010 · HPA-CRCE-010: guidance on the safe use of dental cone beam CT (computed tomography) equipment. Thus the doses from intraoral and cephalometric dental radiological procedures are lower, usually less than one day of natural background radiation. Concerns about radiation exposure are greater for younger patients because they are more sensitive to radiation (i. Before a practitioner performs surgery, he/she should be equipped with up-to-date knowledge regarding the possible May 1, 2024 · Your Current X-ray Risk Report. The volume CT dose index (CTDIvol, reported in units of milligray) is one commonly used metric that is displayed on the CT scanner console or in patient dose reports. It's used to make detailed 2D or 3D images of the inside of your body. Patient safety information about radiation dose from X-ray examinations and CT scans (CAT scans) A "CT" scan or "CAT" scan are terms used to describe a diagnostic technology known as computerized tomography, or computed axial tomography. Surgeons often use dental CT scans to check the height, width and location of your jawbone before dental implant placement. In diagnostic radiology, in particular with the low doses seen in dental and maxillofacial radiology, the radiation risk is of a very small increase in risk of cancer. Oct 25, 2018 · In an attempt to quantify cancer risks from CT scans, the National Research Council in 2006 calculated that every 10 mSv of radiation exposure increases the lifetime risk of cancer by 0. OMR utilizes a combination of standard film X-rays, and digital and panoramic X-rays Apr 17, 2024 · A Dental CT scan, also known as a cone beam computed tomography (CBCT) scan, is a specialized type of X-ray imaging that provides detailed 3D images of your teeth, jawbone, and surrounding structures. The cone-shaped X-ray beam has a lower amount (dose) of radiation than a typical CT On this page. Our goal is to keep radiation exposure risks as low as reasonably achievable. I have taken my third dental cbct scan in December. The full definition: A CBCT scan uses a particular type of imaging technology to capture 150+ images of your mouth at different angles. The same chest scan at a full A computerised tomography (CT) scan uses X-rays and a computer to create detailed images of the inside of the body. (In this group, 33% had received more than five CT scans; 5%, more than 22 scans; and 1%, more Apr 1, 2024 · Advancements in CT technology have led to the development of cone beam computed tomography (CBCT), a type of CT scan specifically designed for dental applications. The low doses of radiation used for imaging tests might increase a person’s cancer risk slightly, but it’s important to put this risk into perspective. It's important to only have CT scans when necessary since they Mar 15, 2018 · Mar 15, 2018. There are multiple theories for their pathogenesis but contributing factors include a combination of a sugar-rich diet, anatomy, oral cavity microbiome, poor dental hygiene, hyposalivation and time 1,2. Consecutive 395 paranasal sinus CT scans were evaluated. kids each year. A computed tomography (CT) scan is a type of x-ray. n a. Jul 21, 2010 · This is in the range of the typical organ doses from two to three CT scans. These X-rays can also detect tumors or facial fractures. sl by zb ur zr qo om ak xj wm