Abstract
Electrical resistance was measured on 74 primary teeth in children from the ages of two to ten and the appropriate endodontic treatment was selected in accordance with the range of the measured values. The association between the selection of the method of treatment and the range of the electrical resistance of the remaining tooth substances at the removal of affected dentin was originally set up by Suzuki et al. (1978) and modified by Hayashi et al. (1982).
The results of the three-year prognosis of the above clinical applications were as follows:
1)Seventy cases (95%) showed the satisfactory prognosis and 4 cases (5%)showed poor results.
2)By measuring the electrical resistance changes, the overlooking of invisible pulp exposure was avoided and the existence of the remaining sound dentine layer was clearly measured. Furthermore, it was supposed that the extent of pathological changes in the pulp might be predicted by the evaluation of electrical resistance changes after the removal of the soft dentine.
3)The use of electrical resistance in the diagnosis for the carious region of the primary tooth proved to be a very effective supplementary method for the objective diagnosis in pedodontic clinic.
