I have noticed a number all of the dental related questions on MN get repeated once a month or so; this may be entirely unwelcome but what I intend to do is to make a series of detailed posts answering the most common questions so that I can signpost posters to an answer. Often they disappear in chat and then resurface.
I am a dentist (that's no secret on here) but I have no way of proving my qualifications and neither do I feel the need to. I hope that this will be of some assistance to someone at some point!!