Dr. Gin Brendan Mervyn Shui Shim is a Dentist in Orchard, Singapore Dr. Gin Brendan Mervyn Shui Shim practices at Smilefocus Family Dentistry in Orchard, Singapore. He completed BDSc from The University Of Melbourne, Australia in 1991. Some of the services provided by the doctor are: Obstructive Sleep Apnoea,Teeth Whitening,Full Mouth Restoration,wisdom teeth extraction and Smile Design etc.