PURPOSE: To provide a remedial agent for pyorrhea alveolaris in a form of a gel by kneading calcium sulfate together with water and salts and can effectively act on the affected areas to heal it basically and remove dental calculus and bacterial plaque.

CONSTITUTION: This therapeutic agent is obtained in the form of gel by kneading calcium sulfate together with water and salts. This agent is obtained by dissolving rock salt (60-100g) in boiling water (1.8 liter) and admixing powdery calcium sulfate of 0.8-1.2 liter powder volume, while the salt solution is still hot, and kneading them well. The calcium sulfate is obtained, for example, by adding dilute sulfuric acid to an aqueous solution of a soluble calcium salt and precipitating the dihydrate salt.