"if any problems are found as a result of your check-up , these will need to be attended to, at a separate cost from the offer, within our practice or by your own dentist, before the whitening offer can be applied. So the initial appointment will cost £63 for a new patient Check-up & x-rays and £53 for existing patients. This will then be deducted from the £310 assuming Hygiene and whitening will be done within the offer time.