Panel 1: We have a close-in shot of what looks like John being a reassuring presence to a younger patient as he tells the 'child' that he's just going to have a gentle look around and s/he feels uncomfortable, he'll stop.
Panel 2: Now that the exam is done, John tells the patient that his or her teeth are nice and healthy and s/he has been a fine patient.
Panel 3: We zoom out to see that he's actually been doing an exam on a grade schooler's teddy bear to reassure him and his mother and tells him that it's his turn now.
Summary: It's not all doom and gloom at the dentist's office. It's just a hectic place to work.