“…This association acts at different but complementary levels by 1) blocking the activation of peripheral nociceptors, 2) blocking input transmission through primary afferents, 3) modulating input transmission by the spinal dorsal horn, 4) increasing the supraspinal and supratrigeminal descending inhibitory controls, 5) modulating the perception of nociceptive inputs when they reach the higher levels of the central nervous system, and 6) integrating sensory perception into a cognitive interpretation of the endodontic treatment. In general, the indications for sedation in endodontics target behavioral outcomes, the aim being to control the patient's reactions in order to allow the treatment to be completed (22,(25)(26)(27). There is, however, a lack of references on the use of sedation to prevent the neurophysiologic consequences of stress during endodontic treatments.…”