Final answer:
Elastic orthodontic separators are used in dental health to create space between teeth before the attachment of orthodontic bands for braces. They exert slight pressure on the adjacent teeth, causing them to move apart. When braces are applied, tension from the wire, known as Fapp, realigns the teeth over time.
Step-by-step explanation:
Elastic orthodontic separators are small elastic rings that are placed between the teeth. These separators are used prior to getting braces, and their purpose is to create space between the teeth so that orthodontic bands can be easily fitted during the next stage of the orthodontic treatment. Separators may cause some discomfort as they push the teeth apart, but this is a normal part of the orthodontic process for realigning teeth.
The force applied by braces, as referenced in the figures provided, is controlled by the orthodontist to move teeth into the desired position over time. This force, often described as tension applied by the wire, guides the teeth in a specific direction. In the context provided, Fapp points straight toward the back of the mouth, indicating that the protruding tooth is being drawn backward into alignment.