Sedation can be given to anyone anxious about the dentists or dental treatments; it helps calms them down. Additionally, doctors can advise sedation for the patients with one or more of the following problems: Gagging problem. Dental fear or dental anxiety. Low pain threshold. Requiring complex or multiple dental procedures. Cannot sit still in the dental chair. Mental or physical challenges. Inability to keep their mouth open for long durations due to jaw troubles. Highly sensitive teeth. Children.