Hi Bryanna, thanks for reply. Saw another dentist in practice today and he thinks problem is to do with gum area over bridge. More tests and definitely no nerve death, although he did say it could be dying!! Put some herbal ointment round bridge and it is at least 80% better (Think it has oil of cloves in) So fingers crossed. But am not letting them rush into RC. Have never had RC. Basically this is the first dental problem I've had for at least 20years, so suppose I've been lucky. Radiographs (x3) at different times showed no pathology. fingers crosed