Table 7 Distribution of satisfaction with microcurrent-emitting and ordinary toothbrushes.
Time | Questionnaire | Excellent | Good | Fair | Poor | Worst |
---|---|---|---|---|---|---|
Microcurrent-emitting | Freshness | 0.5 | 2.75 | 1.5 | 0.25 | 0 |
Cleansing degree | 0.75 | 2 | 1.75 | 0.5 | 0 | |
Ordinary | Freshness | 0 | 2.5 | 2.5 | 0 | 0 |
Cleansing degree | 0 | 2 | 2.75 | 0.25 | 0 |