2 flyers [url removed, login to view]
1 banner approx. 700x300 (enough to fit on a web page)
In order of priority:
Banner would feature on the left half a cartoon person sleeping soundly in bed (with some "zzz" coming from them with some text on "fully sleep here", the right half awake and happy and enjoying life (a meadow maybe some birds singing around them) not childish but a cartoon look for sure. Text would be "Do you want to sleep click here" on the left side and on the right side "or be fully awake during your visit click here"
Flyer 1 would be focused on recreating the attached image with some added information (sent by email)
Flyer 2 would be focused on creating on a warning for people scared of dentist. The 2nd flyer would be more like the warnings you see - with a big warning symbol, big red letters and then what's below it is some information space (white background).