The condition of oral cavity in HIV positive patients - AIDS who are treated in the ward of Atma Jaya Hospital, is no different with the result of studies of surveys in several countries. In patients with undetected HIV, candidiasis, gingivitis, and Kaposi's sarcoma is often found in the oral cavity. These opportunistic infections have clinical symptoms that should be recognized by every fellow dentist, so that appropriate steps could be taken along with the anticipations, considering many HIV positive patients are not detected.