Abstract
Since the molar occlusal surface is most susceptible to dental caries, the degree of cleanliness of this surface is connected with dental caries.
For this reason, the Molar Occlusal Plaque Index (MOPI) was tested at a certain commercial establishment. The findings were compared with those of the OHI and PMAI methods for analysis.
The following conclusions were obtained:
1) Using the initial data as standard for one month, DI gave 52.3%, CI 76.6%, and OHI 64.3% as total values.
2) The reduction effect of MOPI in the first month was 31.5%. This rate was in agreement with that of 6 months.
3) The amount of plaque attachment tended to be larger on the maxilla than on the mandible. The central part had a pronouncedly higher value than the mesial-distal portion.
4) The correlation of MOPI with other indices was most noted for DI.
56 persons were selected for the present study, but we mean to try to increase this number in the future.
