Angled, rather than vertical, bristle tuft arrangements have been shown to contribute significantly to more effective plaque removal because they reach farther interproximally.
Toothbrushing alone can clean the entire interproximal tooth surface, so interdental cleaning
Augments are not needed.

Question

Quizplus · Accepted Answer

Although angled bristles do reach farther interproximally than vertical bristles, they do not effectively remove plaque from the entire proximal tooth surface; therefore interproximal aids such as floss are needed. The other choices are incorrect.

Angled, Rather Than Vertical, Bristle Tuft Arrangements Have Been Shown