| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | toothbrush bristle | United States | In the United States, soft nylon bristles are the preferred choice for gentle and effective teeth cleaning. | 11 |
| 2 | toothbrush bristle | China | In China, firm toothbrush bristles are preferred for thorough cleaning and removal of food particles. | 4 |