He is a Fellow, Diplomate and founding board member of the World Congress of Minimally Invasive Dentistry (WCMID). He is also a Fellow, Master and board member of the World Clinical Laser Institute, and a founding Board member and honorary lifetime member of the NZ Institute of Minimal Intervention Dentistry. He is the recipient of both the WCMID Clinician of the Year Award, and the WCMID Clinical Research Award.

Dr Milicich has conducted research on the physics of Er:Cr:YSGG laser hard tissue ablation and associated clinical applications, and has published in the fields of Minimal Intervention Dentistry. He has produced educational CDs covering minimal intervention and restorative techniques, caries risk assessment, diagnosis and management, posterior composites, and clinical applications of the Er:Cr:YSGG laser. He is also a trainer and educator for the E4D CAD/CAM system.