Several studies have demonstrated that a dental support device (DSD) may increase the isometric strength of different muscle groups (1-7). A preliminary pilot study of 32 women in 2009 showed that DSD may shorten the second stage of labor among nulliparous women (8) by increasing the expulsive efforts of the parturient. The study hypothesis was that DSD may decrease the length of the second stage of labor and decrease the need for obstetrical interventions such as cesarean delivery or operative vaginal delivery.