Some more involved dental treatments, like implant placement, are almost always performed under sedation. Others, like fillings and crowns, are routinely performed without sedation. However, as the patient, you can always request sedation for any dental procedure during which you prefer to be sedated and less aware. Most dentists will comply; they would rather have a nice, calm patient than an anxious one! But why might you request sedation for a routine procedure like a filling?