I too have used Ambert Pimenta a few times.
3 years ago I had a 6 tooth bridge done which cost me £650.
He did the preliminary work one day, then I had the bridge fitted about 6 days later.
Excellent work and very pleased with it.
My dentist in the UK said it was good work and a very nice bridge when I had to have some emergency work done a few months ago.
I would recommend him without a problem.