EAED Scientific Research Award
Pelekanos S, Koumanou M, Koutayas SO, Zinelis S, Eliades G. Micro-CT evaluation of the marginal fit of different In-Ceram Alumina copings.
2nd scientific competition prize of the European Academy of Esthetic Dentistry (sponsored by 3i-Biomet, Spain), 28 June 2008, Madrid, Spain.

EAED Scientific Research Award
Koutayas SO, Charisis D. [OA] Influence of the core material and the glass infiltration mode on the color of glass-infiltrated ceramic veneers over discolored backgrounds. A spectrophotometric evaluation.
1st scientific competition prize of the European Academy of Esthetic Dentistry (sponsored by 3i-Biomet, Spain), 15 June 2007, Baden-Baden, Germany.

Scholarship
2-year Scholarship for Specialization or/and Research in Prosthodontics and Dental Technology.
State Scholarships Foundation of the Republic of Greece, 1996: Grant T104630092.

Poster distinction
Koutayas S.O. Fixed prosthodontics built up with functional occlussion on the basis of the concept of freedom in centric.
3rd Scientific Dental Students Meeting, Dental School of Athens, 7-8 May 1993, Athens, Greece.