The purpose of this study was to investigate usefulness of the mailing method of the Cariostat test.
The subjects were 64 children taken the Cariostat test on four seasons. One dental plaque sample were put into the Cariostat medium and incubated at 37°Cfor seventy-two hows. The Cariostat value and the pH value were evaluated after forty-eight and seventy-two hours. Two plaque samples were taken from same subjects at a time. Each plaque sample was mailed under two conditions (the group of the mailing method with only one swab at normal temperature, the group of the mailing method with only one swab at low temperature), and then operated as well as that regular method. The result showed no effect caused by a difference of temperature during the mailing period by using the mailing method with only swab at low temperature and cultivating for seventy-two hours,