After

Even a “George Clooney” can improve his appearance
with a little cosmetic dentistry. 
From "Gummy" to "Yummy" 
Dental Work Can Erase Years.

And
From 
Yellow to WHITE

The shortness of the upper front teeth might indicate excessive wear from bruxism.  Shorter,Worn teeth are subliminally interpreted as being older teeth.  When they are restored to their proportionally correct length, they form a younger looking smile.