
Sedation and anaesthesia.
Types of Dental Anesthesia
Local Anesthesia
Medication is injected into the mouth to numb the area to be treated. This also blocks the nerves that transmit pain. This type of anesthesia is commonly used during fillings, treating gum disease or preparing teeth for crowns.
Sedation
This method is usually administered by inhaling nitrous oxide, also known as laughing gas. It can also be administered orally in the form of a pill taken prior to the dental procedure. This form of anesthesia is commonly combined with a local anesthetic to help relieve anxieties and reduce pain.
General Anesthesia
This is the strongest form of anesthesia available for dental procedures and involves intravenous medications that produce a temporary loss of consciousness. General anesthesia is usually only used during oral surgery procedures.

Sedation dentistry
Sedation dentistry involves the use of medication to provide a relaxing and anxiety-free experience for people undergoing dental treatment. Although sometimes referred to as “sleep dentistry,” most patients remain awake but feel sleepy.

Benefits of Sedation dentistry
Sedation dentistry may benefit those who:
Have a low pain threshold
Have sensitive teeth
Cannot sit still in the dentist's chair
Gag easily
Need a large amount of dental work done