In most cases, local anaesthesia and intravenous sedation are used. The former helps to desensitise the treatment area so you donu2019t feel any pain, while the latter reduces stress levels and calms you down. Although youu2019ll be awake, youu2019ll have vague recollections of the operation. Some patients need general anaesthesia, which is when you sleep through the entire procedure and are unaware of your surroundings.