Just curious: Antidust coating on modern lenses?

[Poki]

I just checked my equipment for dust and noticed the Fujian 35mm f/1.7 had MUCH more dust on the front lens than any of my Sony lenses. Is this just 'cos the Fujian one has some kind of a plasticky front element or do modern lenses have something like a "antidust" coating on the front element?

Just out of curiosity.