"Lost dentures"

My mother is currently in the Queen's Medical Centre Nottingham as an inpatient. During her stay her dentures have been lost. She has been without dentures for the past 10 days and unable to eat solids. Since being an inpatient for five weeks she has sustained weight loss which obviously is not helped by having no dentures. At the very least I would have expected this to have been addressed by her current ward or passed on to the relevant department to handle. I feel it is the hospital's responsibility to resolve this problem, the sooner the better. I would very much appreciate information as to where to start the process to arrange replacement dentures please.