[Clinical statistical evaluation of the antiplaque efficacy of therapeutic aids]

The results of a blind comparison of different types of toothpaste carried out for two months are reported. It was noted that the paste based on azulene, sodium chloride and benzalkonium chloride produces a more marked regression in the gingival index, whereas that based on chlorhexidine produces a more marked reduction in the plaque index. The differences were not statistically significant, however. With an equal quantity of tooth-paste, it was shown that two initial sessions of ultrasonic detartrasis produce a statistically significant benefit as regards gingival index regression, but an only apparent one for the plaque index. Detartrasis alone, not followed by regular oral hygiene practice, leads to momentary benefits but, as the weeks go by, the difference between the indices of those submitted to detartrasis alone and those who also adopt recommended toothpastes regularly becomes increasingly significant.