A new study suggests that frequent dental X-rays increases the risk of common type of brain tumor.Exposure to ionizing radiation generated by the X-rays is the most important of the known environmental factors that contribute to the development of mostly benign meningioma brain.Plain X-rays of teeth for most healthy Americans is one of the main sources of radiation.
The study says that the X-rays of teeth may expose patients to unnecessary risk."This study should not be a barrier to going to the dentist - says lead researcher and neurosurgeon Elizabeth Claus of Yale University School of Medicine, a specialist Women's Hospital and Brigham Hospital in Boston.- At the same time, according to our data, most patients undergo dental X-rays every year, while the healthy patients, experts recommend doing it once every two or three years. "
Radiography teeth and benign brain tumors
Most meningiomas are benign, but often they grow large, and therefore can cause a number of serious consequences, such as loss
new study is the largest study of this connection.It states that patients who have at least once a year "tasted" X-ray sensitive film (placed between the teeth) were between 40 and 90% more likely to develop meningiomas.Research indicates a link, but does not reveal the causal mechanism.In the study, experts analyzed data on about 1,400 patients aged 20 to 79 years with meningioma was found in the period from spring 2006 to spring 2011.
When comparing the data on these patients on the basis described their stories radiography teeth and adult patients with similar characteristics who did not have brain tumors, experts have concluded that accumulated during the life of the impact of the panoramic or occlusal x-ray snapshots of both jaws wereIt is associated with an increased risk of meningioma.The risk was higher in patients who began to pass X-rays of the teeth under the age of 10 years."Statistics show that patients with meningioma is approximately two times more likely than patients without brain tumors, in certain periods of his life took X-rays of teeth" - said Klaus publication.
should not take dental X-ray every year
Klaus said in an interview that the American Dental Association recommends that healthy patients undergoing X-rays of teeth no more than once in two or three years.Children are encouraged to pass X-rays every year or two teenagers - one and a half every three years.This is due to the fact that the teeth and the jaw are still evolving, and there is an increased risk of formation of hollows.
Neurosurgeon Michael Shulder agree that the new study provides reason enough to limit the frequency of X-rays (if possible).Shulder is deputy chairman of neurosurgery at the Institute of Neurology Cushing, which is part of the organization «North Shore-LIJ Health System» in the town of Manhasset, New York."The risk of tumors in patients undergoing X-rays of teeth no more than once a year, has been relatively low, - he says.- However, dentists and patients themselves have to avoid having to do so many X-rays, if for no relevant evidence. "
study was published in the journal of the American Association release Cancer «Cancer» («Cancer") on 10 April.