Does anyone know where I can go to whiten my teeth preferably by a dentist?

Many dental clinics in Singapore have such facility. Personally, I had mine done at About Braces - I know the staff there personally.

Here is their info: https://aboutbraces.org/contact/

Mention my name and see if they are able to give you a better rate. 😉

Here is everything about me and what I do best.