• Professor, University of Texas School of Dentistry at Houston

• Director, Houston Center for Biomaterials and Biomimetics (HCBB)

• Author/Co-editor: Fundamentals of Color: Shade Matching and Communication in Esthetic Dentistry (Quintessence Publishing 2011) and Esthetic Color Training in Dentistry (Elsevier 2004)

• Founder and Past President, Society for Color and Appearance in Dentistry