Patient Risk from Intraoral Dental Radiography

Sj, Gibbs; Pujol, A; Ts, Chen; James, A. Everette

doi:10.1259/dmfr.1988.0002

Cited by 54 publications

(34 citation statements)

References 12 publications

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“…9 Studies shows that 16 inch FSFD decreases 38% of thyroid dose, at 90 kVp and 45% decrease in 70 kVp, compared to 8 inch FSFD. 10 This is because at the greater distance X-ray beam is less divergent and there will be 32% reduction in exposed tissue volume.…”

Section: 8mentioning

confidence: 99%

Radiation in Dental Practice: Awareness, Protection and Recommendations

Ar²,

Bhanushree³

et al. 2013

The Journal of Contemporary Dental Practice

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Radiation is the transmission of energy through space and matter. There are several forms of radiation, including ionizing and nonionizing. X-rays are the ionizing radiation used extensively in medical and dental practice. Even though they provide useful information and aid in diagnosis, they also have the potential to cause harmful effects.In dentistry, it is mainly used for diagnostic purposes and in a dental set-up usually the practicing dentist exposes, processes and interprets the radiograph. Even though such exposure is less, it is critical to reduce the exposure to the dental personnel and patients in order to prevent the harmful effects of radiation. Several radiation protection measures have been advocated to ameliorate these effects.A survey conducted in the Bengaluru among practicing dentists revealed that radiation protection awareness was very low and the necessary measures taken to reduce the exposure were not adequate. The aim of the article is to review important parameters that must be taken into consideration in the clinical set-up to reduce radiation exposure to patients and dental personnel.

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Section: 8mentioning

confidence: 99%

Radiation in Dental Practice: Awareness, Protection and Recommendations

Ar²,

Bhanushree³

et al. 2013

The Journal of Contemporary Dental Practice

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“…Whereas fullmouth radiographs expose the skin of the patient to considerably more radiation than do panoramic or lateral cephalometric radiographs, studies of specific organs (e.g. brain) indicate that these differences in exposure are less remarkable [38,39,40,41]. Studies also indicate that an increased likelihood of a meningioma on the tentorium or below it correlates with the increasing number of full-mouth radiographs [42,43].…”

Section: Ionizing Radiationmentioning

confidence: 99%

Epidemiology and etiology of intracranial meningiomas: A review

1996

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The frequency of meningiomas has been the topic of relatively few reports. Hospital-based brain tumor series indicate that the incidence is approximately 20% of all intracranial tumors; population-based studies indicate an overall incidence of 2.3/100,000. Although intracranial tumors as a whole show a higher prevalence in males than in females, meningiomas have a 2:1 female-to-male ratio. Between Caucasians and Africans, African-Americans, and Asians, certain differences also have been noted. Meningiomas in children are rare and differ from those in adults and other childhood tumors; they are even more rare in infants. Several features indicating etiologic factors have been identified, among which are ionizing radiation, head injury, hormones, and other receptor binding sites, genetic factors, and viruses. The most common source of exposure of the head to ionizing radiation is dental radiographic examination. Since 1922, head trauma has been considered a possible risk factor, but recent large studies do not support this link. Several factors have prompted studies of estrogens and progestogens as risk factors for meningiomas. Other studies have sought to determine if certain individuals have an inherited predisposition for developing a meningioma and/or if viruses, which may act alone or with other mutagens, figure into the formation of a meningioma. The most promising studies are those of cytogenetics, and future elucidation of factors associated with the loss of one copy of chromosome 22, another phenomenon that has been identified in meningiomas, may lead to screening tests and gene therapy.

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“…The effective dose at each projection site when the bisecting angle technique was used with E-speed film was calculated from the data of Gibbs et al 6,7 for the tissue or organ doses resulting when film-based intraoral radiography is performed. By applying these data to each projection site used in a full-mouth radiographic examination conducted with a CCD, the effective doses obtained were treated as the effective doses resulting when digital intraoral radiography is performed.…”

Section: Effective Dosesmentioning

confidence: 99%

“…Accordingly, this study assessed the effect of the size of the sensitive area of intraoral CCDs on the patient effective dose, using the tissue and organ dose data of Gibbs et al 6,7 …”

Section: Introductionmentioning

confidence: 99%

Patient dose in charge-coupled device-based full-mouth intraoral radiography

2006

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Objectives. This study investigated the effect of the size of the sensitive area of the charge-coupled devices (CCD) used in digital intraoral radiographic systems on the patient effective dose in full-mouth radiographic examinations. Methods. The effective dose was assessed in full-mouth radiographic examinations using the bisecting angle technique, while assuming that CCD sensitivity is equivalent to that of E-speed film. The results were compared with the effective doses obtained using E-speed film. The tube potentials used were 70, 80, and 90 kV. The diameter of the circular field at the cone tip was 7 cm, and the length of the spacer cone was 20 cm. Twelve types of CCD devices with sensitive areas ranging from 307 to 1200 mm 2 were assessed in seven digital intraoral radiographic systems. Results. The number of exposures and effective dose using the CCD devices were inversely proportional to the sensitive area of the CCD. Both the number of exposures and the effective dose were increased when using a CCD with a sensitive area smaller than the intraoral film size. Consequently, a reduction in the patient dose did not occur to the extent expected, based on the relative sensitivity of the CCD to film. Conclusions. In order to fully realize the advantages of a CCD, it will be necessary both to reduce the frequency of examinations and to use a rectangular-shaped beam in CCD-based intraoral radiographic systems.

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Patient Risk from Intraoral Dental Radiography

Cited by 54 publications

References 12 publications

Radiation in Dental Practice: Awareness, Protection and Recommendations

Radiation in Dental Practice: Awareness, Protection and Recommendations

Epidemiology and etiology of intracranial meningiomas: A review

Patient dose in charge-coupled device-based full-mouth intraoral radiography

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