An annual meeting of the 2012 Primary Care PBRN Conference was held on June 2012 (Bethesda, U.S.A.). As international attendees, practitioner/investigators from Australia, Brazil, Romania and Japan participated in the conference. JDPBRN group presented a result of international collaborative study with US National DPBRN entitled “Restorative Treatment Thresholds for Interproximal Primary Caries Based on Radiographic Images: differences between DPBRN Groups and JDPBRN”.
