P A Heasman,G I McCracken
P A Heasman
Powered toothbrushes are becoming increasingly popular among the general population, and there are many models on the market from which to choose. The design of these toothbrushes is changing constantly, as one would expect with a developin...
Sebastian Ciancio
Sebastian Ciancio
Powered toothbrushes were first introduced on a large scale in the early 1960s. However, because of a clear lack of superiority compared with manual brushes, and problems with mechanical breakdowns, their sales decreased significantly. Howe...
Thomas J Boardman
Thomas J Boardman
A symposium on powered toothbrushes was held at the 2000 IADR General Session. The author was asked to address statistical issues in conducting clinical studies. The objective was to cover important statistical topics that should be conside...