This is the stupidest post I've seen...ever...on any forum...in my life.
Have you researched what ANY schools want?
Most schools want a variety of letters from dentists, biology/physics/chemistry professors, etc...Hell AADSAS won't even accept 5 letters of recommendation. Why would you want to submit 5 letters from dentists anyway? That's like going to the shoe store and buying 5 of the exact same pair of Keds...yeah...KEDS!
If I'm on the admissions committee, a letter of recommendation from somebody's father isn't going to work for the obvious reasons (bias being the primary), but don't you think the adcom is going to step back and say this:
"Is this guy for real? Submitting a letter of recommendation from his father? What an idiot. His profile is good, but how stupid must you be to submit this. Did he really think this was going to work? This person lacks all common sense and would be giving root canals where fillings would suffice. DENIED. "