Open Question: Is my laptop still at threat for bad stuff after doing a system restore?

I found out last night I had some trojans on my laptop, and after about an hour of trying to get the scanner to scan and remove and freaking out, I found out I could do a system restore. So I did the system restore and everything's running fine. I went back a couple of days because I'm pretty sure I got the trojans yesterday. Even if I went back using system restore, are the trojans and other bad things on my computer still? Or am I free and clear? I did a couple of virus scans and it didn't find anything...