End-rounding of toothbrush bristles are uniformly beneficial for client safety. Soft bristles are less traumatic to oral tissues and remove as much or more plaque biofilm than harder bristles.

Question

Quizplus · Accepted Answer

While both of these statements represent common beliefs and make sense, there is no evidence to show they are True. Many bristles labeled end-rounded are not uniform bristle filament stiffness, and irregularities and abrasiveness of dentifrice affect trauma to oral tissues. The other choices are incorrect choices.

End-Rounding of Toothbrush Bristles Are Uniformly Beneficial for Client Safety