An Australian dentist is calling for major changes in the treatment of dental decay after a new study found up to half of fillings are unnecessary. Professor Wendell Evans and his team at Sydney University created the Caries Management System where decay is managed using a highly concentrated fluoride varnish along with restricting sugary food and drink. The system has been trialled in New South Wales and Australian Capital Territory for the last seven years and Professor Evans says it's reduced the need for fillings by 30 to 50 percent.
Wendell Evans talks with Kathryn Ryan.
