Laboratory Medicine for Dentistry;
Graduate School of Dentistry at Matsudo;
Nihon University School of Dentistry at Matsudo;
Matsudo;
Japan;
Department of Laboratory Medicine and Dentistry for the Compromised Patient;
Nihon University School of Dentistry at Matsudo;
Matsudo;
Japan;
Photodynamic Diagnosis; Portable Fluorescence Spectrophotometer; Oral Cancer; Protoporphyrin IX;