Dental imaging methods for the detection of early tooth decay

Dentists often aim to identify tooth decay that has already advanced to a level which needs a filling. If dentists were able to find tooth decay when it has only affected the outer layer of the tooth (enamel) then it is possible to stop the decay from spreading any further and prevent the need for fillings. It is also important to avoid a false-positive result, when treatment may be given when caries is absent.

This Cochrane Review aimed to find out how accurate X-ray images and other types of dental imaging are for detecting early tooth decay as part of the dental ‘check-up’ for children and adults who visit their general dentist. Researchers in Cochrane included 77 studies published between 1986 and 2018 to answer this question.

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