The term posterior teeth defines the teeth in the back of our mouths with their flat surfaces to crush the food. There are two kinds and they are called molars and premolars. The proximal contact of posterior teeth refers to these teeth being in contact with each other's surface areas constantly which result in erosion over time. The answer given in option C, decreased lenght of anatomic crowns is true because anatomic crown is the part of the teeth that is visible and covered with enamel so the constant contact affects this area and causes it to wear in time.
<span>The vestibule of the ear has two ssensory chambers: the utricle and the saccule, and each contin a macula with the receptors for static equilibrium.</span>
