Every week a Guardian Money reader submits a question, and it’s up to you to help him or her out – a selection of the best answers will appear in next Saturday’s paper.

This week’s question:

My dentist keeps badgering me to buy an electric toothbrush, but which should I go for? There is a bewildering range – some even costing around £220. What do I need to pay, and what features – if any – are a must? My old £2 Oral B was so much easier.

Do you have a problem readers could solve? Email your suggestions to money@theguardian.com or write to us at Money, The Guardian, Kings Place, 90 York Way, London N1 9GU.