Q. I recently had an old amalgam filling removed by an NHS dentist and replaced with a glass resin composite filling and topped at the end with a white one because it was so large. I ended up having to pay for this privately as the NHS don’t do white fillings. My only problem with it now is that it feels rough and rather than it being shaped to look like the contours of a molar, my dentist left a concave shape in the middle of it. Is this normal? As far as I was aware white composite fillings are supposed to be time consuming, but somehow my dentist did three of these in 40 minutes.