Dr Loh is a Consultant Oral Maxillofacial Surgeon practicing at Gleneagles Medical Centre. He is also currently the Visiting Consultant, Dept. Of Oral Maxillofacial Surgery to the National Dental Centre, Singapore. Dr Loh has the honour to be the Visiting Consultant and teaching faculty in the Implant course of the MDS Periodontology Programme, Faculty of Dentistry, National University of Singapore.

Dr Loh has published thirty International refereed Journal Articles, five local/regional refereed Journal Articles, thirty-two Conference Paper and thirteen papers for seminars, public talk and lectures. He has also contributed to books.

He has special interest in oral implant surgery, orthognathic surgery (jaw realignment) and general oral surgical procedures.