Thanks for your email.
Invisalign pioneered the clear aligner system over 10 years ago, Clearstep are the UK equivalent that have been around for almost as long. Each has their advantages and disadvantages.
With Invisalign you can see what the final result can look like after you have had the impressions taken on a computer generated animation. With Clearstep there is an orthodontist who looks at the impressions, photographs and xrays taken to treatment plan the movement of your teeth. Duration wise I would say Invisalign is quicker as changing of aligners is more fluid (they are all made together at the start of the treatment), with Clearstep, a new impression must be taken after every 8 aligners. It can take clearstep about a month before the next set of aligners are made.
The costs will vary depending on how much treatment you have and the pricing structure of the practice. It would be best to see a dentist that does both and get an estimate.
Kind regards
Dr Kailesh Solanki
Kissdental
157 Woodsend Road, Flixton, Manchester, M41 8GN
Web: www.kissdental.co.uk Tel: 0161 748 5250