Disable ads (and more) with a membership for a one time $4.99 payment
Retrusion of the mandible occurs when it is positioned where in relation to the maxilla?
In front
Beside
Above
Behind
The correct answer is: Behind
Retrusion of the mandible refers to a backward movement of the lower jaw in relation to the upper jaw (maxilla). When the mandible is positioned behind the maxilla, it means that the lower jaw is displaced posteriorly, indicating retrusion. This positioning can lead to a variety of dental and orthodontic issues, impacting bite alignment and potentially causing discomfort or functional difficulties. In normal occlusion, the upper teeth typically overlap the lower teeth slightly in front. When the mandible is moved backward, it not only affects the relationship between the teeth but can also influence jaw function and facial aesthetics. Understanding retrusion is important in dentistry, as practitioners may need to address issues caused by this positioning during treatments such as braces or dentures.