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When you take a gulp of something, the liquid touches all/most of your teeth; when you drink through a straw, the liquid touches less teeth. If you drink through a straw you use more muscles in your mouth and cheeks/ shift your jaw more which may irritate your tooth. However, if it is a cavity, and you must drink liquids that are not good for your teeth, then using a straw could be beneficial if you place the straw in a position that allows the liquid to be consumed without touching the hurting tooth. On the other hand, if the liquid always touches the same teeth/hurt tooth it could speed up the deterioration of the tooth.

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16y ago

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