Hi, reading carefully to the link JDJ provides. It mentions the name of the dentist who performs the water laser surgery. If your kid is over 6, he can do the surgery in his dental office located in the Heng Lung Center in Causeway Bay. The cost is around $6000 currently. Or you can choose to make an appointment with him through the Sanatorium Hospital - the dental department.
Hope information helps.
Thanks for your sharing:) My daughter just turns 4 this march. She also has a mild tongue tie and is having difficulty in mastering /S/ and /R/ sounds. I have already arranged the same surgery for her in this coming July with Dr. Lee. I am very glad to know that there is no pain afterwards. I really hope that my girl can speak freely and doesn't feel frustrated whenever i correct her articulated sound ( i don't remember how many times i have corrected her ...and she still can't sound it right...)