Oral conscious Sedation, or OCS, provides a stronger level of sedation than Nitrous Oxide. Many patients prefer to use OCS for the deeper relaxation it provides. Though you are still able to stand, walk, or answer questions, you remain in a calm and drowsy state throughout the treatment. With OCS, many patients have found they have little memory of the procedure after the fact. For patients with dental anxiety, this can be a great benefit.