[Measuring periodontal pockets with contrast media. 1. Preparation of contrast media]

Periodontal pocket is main clinical symptom of periodontitis. Measurement of periodontal pocket depth is the most important examination. The purpose of this study was to get contrast medium radiography of periodontal pocket. The present study was compared with contrast media of varying concentration. Contrast medium-sample containing 40% Sodium Iothalamate and 30% Meglumine Adipiodone had slight higher radiopacity than the others. These contrast media-sample were adequate to clinical practice over 40% concentration. Using Sodium Iothalamate and Meglumine Adipiodone, radiopacity was able to differ from radiopacity of teeth at 60%-100%.