Answers

2014-05-08T17:44:40+05:30
Toothbrush bristles are made of nylon because it is softer and easier on gums,,,,
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2014-05-08T17:51:49+05:30
The bristles of toothbrush are made of nylon so that they will be softer and easier on gums.
the handles made of plastics becoz for rigidity.......
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