Do you think electronic toothbrush cleans teeth better?

My dentist suggested that for the places I cannot reach easily. I change my toothbrush every 3 months. If I get that, I don't think I can change it every 3 months because it is very expensive! Using the same head for a long time seems more unhealthy to me. What do you think? What is your experiences with electronic toothbrush?

Do you think electronic toothbrush cleans teeth better?
Do you think electronic toothbrush cleans teeth better?
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