1 Professionally dispensed kits from a dentist's office designed to be used at home typically cost $100-$500, depending on the location and dentist. 2  Take-home whitening kits include custom-made trays and typically use a stronger bleaching agent than over-the-counter systems.
... NewsGroupQuestion wrote: How long is a UK cheque 'valid' i.e. how long can a person keep a cheque before presenting it to their bank and still have it honoured? Conventionally, six months.Some cheques have earlier expiries explicitly written on them.ow long is a UK Cheque 'valid'? I hope this is the right group to ask this question..... How long is a UK cheque 'valid' i.e. how long can a person keep a cheque. before presenting it to their bank and still have it honoured?
It is worth us adding that PPI claims older than 6 years may be more complicated and difficult to resolve than those within 6 years. The reason for this is that banks are only obliged to keep records for 6 years and therefore may not have the paperwork relating to your policy if it was sold more than 6 years ago.This is not a problem if you still have all the paperwork yourself, of course.he reason for this is that banks are only obliged to keep records for 6 years and therefore may not have the paperwork relating to your policy if it was sold more than 6 years ago. This is not a problem if you still have all the paperwork yourself, of course.