Explain why the tooth brush handles and bristles should not be made same material
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The bristles and handles of tooth brush should not be made of same material as handle of the tooth brush should be hard and strong on the other hand bristles should be soft and flexible
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The handle and bristles of a tooth brush should be made of different materials. The material which is used for making toothbrush handle should be hard and flexible; because the handle has to withstand lot of stress and has to reach every corner of mouth. The material which is used for making bristles should be soft, flexible yet durable; because the bristles should not damage the tooth or gum but should last longer.
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