yes, I request the certificate to the bank and they sent me the document signed and stamped, it appears the name, my document id, the account number and the balance and datetime.
Some successful cases in UK but better to contact with the Embassy before to be sure. Every Embassy has a different policies. Vientiane is getting harder and maybe it has to be hospital and not dentist.
If not, maybe you can try the Muay Thai or other soft option.
Be careful with the dental treatments, for now only the UK Embassy has some approved. Anothers Embassies rejected some people for this. Better to check first with the Embassy in question.
I saw some get deny because of that yes, they require a minimum of 3 months. Maybe you can get some justification that are credible, better to consult the Embassy directly