The Bass/POH (Personal Oral Hygiene) toothbrush differs from most toothbrushes in two ways: First, the bristles are more spaced out and there are fewer bristles in the brush head.
What Dr. Bass found was most toothbrushes had too many bristles to effectively wiggle between the teeth and down into the gum line. So, he created a brush with much fewer bristles to be able to get down where the bad bugs thrive, to disrupt and remove the bacteria. The same is true today as most conventional toothbrushes have too many bristles to effectively use the Bass brushing technique.
The second way the Bass/POH toothbrush differs from other toothbrushes is the bristle tips - the ones on the Bass brush are rounded, polished and very smooth. See the photos on the left to compare the rounded bristle tips of the Bass toothbrush and the jagged, roughly-cut tips of many other toothbrush bristles.
Images showing the tuft and bristle size of the heads do not represent the actual colours. All brushes are opaque in colour, not translucent.
#1 Adult:3 row 18 tuft staggered bristle. Designed for teeth that have deep grooves in molars. The widely-spaced bristle tufts allow effective cleaning in hard-to-reach spaces.
#3 Adult: 3 row 20 tuft regular. Based on the original design by Charles C. Bass, M.D. An all-round excellent toothbrush to suit most users.
#4 Adult:4 row 43 tuft bristle. A transitional brush for people accustomed to using a hard bristle brush. Tightly spaced tufts feel firm, but are made with soft bristles, ideal for those who like the sensation of the hard toothbrush they have been using. The bristle tufts are laid out in a densely packed design, allowing little or no bending of individual filaments which provides the firmer feel, but with soft, end rounded polished bristle tips.
#7 Adult:3 row 29 tuft bristle. The bristles in this brush feel less firm than the #4 toothbrush by using fewer rows of bristles and tufts, but still delivers optimum cleaning.
#8 Junior: 3 Row 24 tuft bristle. A shorter handle and head, designed for smaller mouths. Suitable for ages twelve months and up. Just what children need to start them off on the right track.
For a battery-operated version designed on Bass principles check out the Oobrush here