7-year-old Anička, who has autism spectrum disorder, is coming to the dentist for a preventive check-up. Her mother reports that Anička has been experiencing tooth pain for several months. Upon entering the office, the patient was already crying and very restless. The initial dental examination was challenging, but the dentist was able to spot several carious teeth. Anička does not allow the dentist to proceed with drilling the cavities and strongly resists. What can the dentist administer?