-2009, The 49th Annual International Congress and General Meeting of the Iranian Dental Association, IDA, Tehran, Iran: Sadr A. Bonding; new findings and principles of a successful restoration. Invited speech.

-2009,International Association for Dental Research 87th General Meeting,IADR, Miami, FL, USA:Chairman for the session:Conventional and Alternate Imaging Modalities in Dentistry.

-2009,International Association for Dental Research 87th General Meeting,IADR, Miami, FL, USA:Optical Coherence Tomography for In-vivo Assessment of Class-III Composite Restoration Sadr A, Tagami J, Shimada Y, Sumi Y. Poster Presentation.

-2008, Continuing Education Program for Dentists and Specialists, Restorative Dentistry (credited) Shahid Beheshti University M.C., Tehran, Iran: The basics and Innovations in Contemporary Bonding. Invited Lecturer 

-2008, The 8th General Meeting of  Iranian Association for Restorative and Cosmetic Dentistry  ICRD, Tehran, Iran : Sadr A, Shimada Y,  Sumi Y, Tagami J. OCT and the future of dental imaging. Invited Presentation

-2007, International Federation of Esthetic Dentistry 5th World Congress, IFED, Seoul, South Korea : Sadr A, Shimada Y, Yang Y, Jaberi Ansari Z, Aminian R, Moezizadeh M, Tagami J. Micro-shear bond strength and mechanical properties of self-etching materials during one-year storage. Poster Presentation.
 

-2007, International Association for Dental Research 85th General Meeting, IADR, New Orlenas, LA, USA : Sadr A, Lu H, Shimada Y, Tagami J. Nanoindentation to evaluate the mechanical properties of adhesive layers. Oral Presentation.

-2007, School of Mechanical and Aerospace Engineering, Oklahoma State University, Stillwater, OK, USA, Sadr A.Evaluation of materials in adhesive dentistry: scope and challenges.  Invited Seminar

-2007, The Second Annual Conference of Academic Society of Iranians in Japan.ASIJ, Tokyo, Japan, Sadr A. Nanotechnology in Adhesive Dentistry Poster Presentation

-2006, The 6th General Meeting of  Iranian Association for Restorative and Cosmetic Dentistry  ICRD, Tehran, Iran : Sadr A, Yang Y, Daeshmehr L,.., Shimada Y, Tagami J. The latest advancements and trends in adhesive dentistry research. Oral Presentation.

-2006, International Association for Dental Research 83rd General Meeting, IADR, Brisbane, Australia : Sadr A, Shimada Y, Tagami J. Effects of storage temperature on the shelf-life of self-etching systems. Oral Presentation.

-2006, The First Conference of Academic Society of Iranians in Japan. ASIJ, Tokyo, Japan, Sadr A, Shimada Y, Tagami J. The New Principles Of Modern Dentistry: Prevention and Minimal Intervention. Oral Presentation in Persian.

-2005, The Second International Congress on Adhesive Dentistry, IAD, Tokyo, Japan : Sadr A, Okada H, Shimada Y, Tagami J. Micro shear bond strength and morphological analyses of three new one-step self etching adhesives. Poster Presentation.

-2005, International Association for Dental Research 82nd General Meeting, IADR, Baltimore, MD, USA : Sadr A, Shimada Y, Tagami J. Bond strengths of two adhesives and effects of application methods. Oral Presentation.

-2005, The 11th Research and Presentation at the Tokyo International Exchange Center, TIEC, Tokyo, Japan: Sadr A, Nakajima R, Shimada Y, Tagami J. Concepts in Modern Dentistry: Prevention and Minimal Intervention. Oral Presentation.

-2003, The 43rd International Congress and General Meeting of the Iranian Dental Association, IDA, Tehran, Iran: Sadr A, Ansari G. Fluoride uptake by enamel from Iranian school rinse. Oral Presentation in Persian.