It doesn't seem like 5 mins but roll on a few weeks and I'm back at the dentists, again. A shard of bone which must have been dislodged during my recent extraction has made it's way to the surface and started sawing away at my tongue. Thankfully, it came out without a fight and was only about 1mm x about 5 or 6mm but felt like a kitchen knife to my tongue. The dentist was great and just howked (a technical Northumbrian term) it straight out without fuss or ceremony. Sorted, for now...