Gilbert graduated in 1984 with a BDS from the University of Otago. He then spent 14 years in private practice before returning to Otago to complete a 3-year Prosthodontic Master’s degree.
As part of his MDS he completed research based on the maintenance involved with implant overdentures having papers published in the peer reviewed international journal – The International Journal of Prosthodontics.
On returning to Auckland he set up a private practice limited to Fixed and Removable Prosthodontics. He continues to enjoy teaching, lecturing both here and in Australia.