Previous congresses of the Czech orthodontic society:

• VIII^th Congress of the COS 2007 - Plzeň  

• IX^th Congress of the COS 2008 - Špindlerův Mlýn  

• X^th Congress of the COS 2009 - Mikulov  

• XI^th Congress of the COS 2010 - Brno  

• XII^th Congress of the COS 2011 - Praha  

• XIII^th Congress of the COS 2012 - Luhačovice  

• XIV^th Congress of the COS 2013 - Plzeň  

• XV^th Congress of the COS 2014 - Olomouc  

• XVI^th Congress of the COS 2015 - Hradec Králové