Assertion: electric toothbrush's brush head | /r/HasAspect | bristle
Facets:
Source sentences:
text: The CrossAction Brush head has bristles that are angled at 16 degrees which allow it to clean along the gum line.
text: Some brush heads may have bristles that help specifically with gum health, whilst others might be designed to help whiten the teeth and others may even be produced to clean deeper between teeth.
text: Some brush heads have bristles all the same length whilst others are differing lengths.