When Dr. Hershman did my filling, I experienced a lot of cold sensitivity with the air from the drill. He was not very cooperative in trying to avoid my discomfort and was visibily impatient, giving many heavy sighs. It was about 3:30 and I think he was eager to leave for the day. When he was done with my filling he clapped his hands and said with an attitude, "I am outta here". Needless to say, I switched dentists immediately.