Fighting tooth and nail

A dentist had a fight with an 85 year old female patient over her dentures. Apparently her choppers were improperly fitted and causing her great pain. Consequently she requested a $900. refund which resulted in him assaulting her. During the tussle she bit him. The dentist was arrested thanks to granny taking a bite out of crime, and even with missing teeth she had a great deal of gumption.
http://www.thesmokinggun.com/documents/florida/dentist-arrested-for-denture-battle-394017