Sentence 1: The surgeon was working on a patient's wisdom teeth. 
 Sentence 3: He ended up messing up 
 Sentence 4:  Since he made the patient sign a waiver, the patient could not sue 
 Sentence 5:  The patient wrote a bad review online though 
 Option 1: He decided to leave them in. 
 Option 2: He had to take out 4 of them.