Q. Hello, I was recently obliged to have a bottom far rear molar tooth root canal treated, but when I went to an NHS dentist afterwards for a crown he told me that wouldn’t be necessary for six months. Now I read that uncrowned root canal teeth are at risk of fracturing especially with a heavy bite like mine. What is your opinion given that I would be hard pushed to finance private crown treatment having already laid out, what for me is a very large sum of money (£560) for the canal work. Also, after four weeks the treated tooth is still sensitive to the touch (though no actual toothache as such). Is this a cause for concern? Thanks for your advice