(1) the contacts between upper and lower dentures on the balancing or mediotrusive side for the purpose of stabilizing the dentures; (2) the contacts between upper and lower dentures at the opposite side from the working or laterotrusive side (anteroposteriorly or laterally) for the purpose of stabilizing the dentures; (3) the contacts between upper and lower natural or artificial teeth at the opposite side from the working or laterotrusive side. SYN: balancing occlusal surface.