Orthodontic Assistant Practice Exam

What is the definition of a fixed appliance in orthodontics?

1. A removable appliance with springs

2. An appliance with cemented bands and archwires

3. A device that aligns teeth using brackets

4. A temporary orthodontic retainer

The correct answer is: An appliance with cemented bands and archwires

A fixed appliance in orthodontics is defined as an appliance that utilizes cemented bands and archwires to achieve alignment and correction of teeth positions. This type of appliance is permanently attached to the teeth for the duration of treatment, which allows for continuous force to be applied to the teeth, facilitating movement in a controlled manner. The use of cemented bands provides stability, while the archwires connect the brackets placed on the teeth, enabling the orthodontist to exert pressure and guidance on the teeth as needed. This is essential for comprehensive orthodontic treatment, as it allows for precise adjustments based on a patient’s progress. Other options describe components or alternatives to fixed appliances, such as removable appliances or temporary retainers, which do not provide the same level of continuous, controlled force needed for effective tooth movement over time. Therefore, these alternatives do not meet the criteria for what constitutes a fixed appliance in orthodontics.