I'm not sure, but a serious infection might change the advice one would give on root canal vs. extraction. The difference in experience across the pond might possibly be related to a further possible difference in preventative care. Americans may have more regular dental checkups, which might detect a root canal situation before it deteriorates to the point where extraction is the best option.
In my case, the root canal situation hit suddenly... a searing pain in a tooth that had an old filling. It was a Friday afternoon but my regular dentist was just able to get me in to see a root canal specialist who had it all excavated out by about 8 pm (There was about 2 hours of driving). I had to wait a bit longer for a crown to be made, which is normal. I'd already had crowns put on teeth that had too many fillings to hold together any more, so that was no surprise.
I gather that what you really need to avoid is having the infection spread to the bone.
In my case, the root canal situation hit suddenly... a searing pain in a tooth that had an old filling. It was a Friday afternoon but my regular dentist was just able to get me in to see a root canal specialist who had it all excavated out by about 8 pm (There was about 2 hours of driving). I had to wait a bit longer for a crown to be made, which is normal. I'd already had crowns put on teeth that had too many fillings to hold together any more, so that was no surprise.
I gather that what you really need to avoid is having the infection spread to the bone.