Ace the Smile Squad Challenge 2026 – Orthodontic Assistant Exam to Brighten Your Future!

The term "retainer" in orthodontics specifically refers to an appliance used to maintain the position of teeth after orthodontic treatment is completed. Once braces or other orthodontic appliances are removed, the teeth can still shift back to their original positions if a retainer is not used. Retainers help to keep the teeth in their new alignment, preventing relapse and ensuring the long-term success of the orthodontic treatment.

The other choices do not accurately describe the function of a retainer. For instance, an appliance to help with teeth cleaning does not serve the purpose of maintaining tooth position. Similarly, an initial aligner is associated with the process of teeth straightening rather than post-treatment stabilization. Lastly, a surgical tool is not related to the retention of tooth position after the active phase of orthodontic treatment.