- Clinical Professor, Department of Fixed Prosthodontics, Baylor College of Dentistry, 1987 – 1993.
- Assistant Professor, Department of Fixed Prosthodontics, Baylor College of Dentistry, 1982 – 1987.
- Occlusion Instructor, Baylor College of Dentistry, 1982 – 1987.
- Course Director, 3rd Year, Department of Fixed Prosthodontics Baylor College of Dentistry, 1986 – 1987.
- Resident, Graduate Program of Fixed Prosthodontics University of South Carolina, Charleston, South Carolina, 1980 – 1982.
- Resident, Division of Occlusion, University of Texas Health Science Center of San Antonio, 1979 – 1980.
- Global Symposium, Implantology Tissue and Regeneration , Biohorizons San Diego California, CA 2008.
- Course Director, Implantology Diplomat, Evangelic University of El Salvador, San Salvador, El Salvador. Central America. 2007 – 2008
- Course Director, Prosthetics in Implantology Diplomat, Lorenzana Dental Center, San Salvador, El Salvador, Central America. 2009
- Resident Fixed Prosthodontics, 1982 – 1983.
- Fixed Prosthodontics, Director of Junior class 1982 – 1987.
- Clinical Instructor of Junior and Senior classes Fixed Prosthodontics, 1982 – 1992.
- American Board of Prosthodontics Certified.
- Member National Health Commission of El Salvador 1998-1999.
- Health Care Reform Commission of Congress 1999.
- Salvadorean Dental Society President, 1997 – 1999.
- Omicron Kappa Upsilon – Honorary Dental Society, 1986.
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