There are two main types of toothbrushes: manual and electric.
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Bristles
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The bristle type is one of the most critical factors to consider.
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Size and handle
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Similarly, the handle of the toothbrush should be easy to grip and comfortable to hold. Some toothbrushes offer ergonomic handles designed to provide a secure and comfortable hold.
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How to use the brush correctly
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Kuller says that the angle of the toothbrush while brushing should be at 45 degrees to your gum line, and you should brush in small, circular motions.