Bit of a newbie question but what is a dot head?? And why are people fitting them? I assume is a head from a later model bike.
The squish isn't any different to an 1100 head, the chamber is shallower though which raises the compression ratio.
The edge of the squish band is the only place in a combustion chamber you want a sharp edge, the turbulence it creates mixes the air fuel better and reduces the size of the fuel droplets, this creates a faster burn reducing the likely hood of detonation.
Sure about that?