Break in After Piston Change

I'm currently going through the well known problem of having my pistons changed on my 2010 MKII Octavia Estate.  Of course there are a multitude of other parts being changed but the root cause of the problem is the pistons.

I would like to know if this will require a "break in" period and if it does how does one do it properly?

Would love to hear from other Octavia owners who've gone through the same fix and their experience after this work was done.