The U.S. Food and Drug Administration (FDA) has warned against using clear aligners shipped directly to consumers without a prescription or supervision from a dentist or orthodontist. The core of the announcement is that the FDA has never authorized these ready-to-wear-out-of-the-box products.
In patient guidance published on October 1, the FDA stated that clear aligners are prescription medical devices that must undergo its review and receive authorization before they can be marketed. According to American Dental Association (ADA) News, the agency also stressed that it has never authorized products sold directly to consumers without a prescription or professional supervision.
Harms Reported by the FDA and How to Check Authorization
The FDA disclosed reports of harm from patients who had used clear aligners remotely, without professional supervision. The most common complaints were new or worsening tooth pain, jaw pain, bite problems, tooth alignment that actually got worse, and new gaps between teeth. The FDA recommended that patients see their dentist or orthodontist for an evaluation if they experience pain or unexpected symptoms. While the agency did not ban teledentistry, including remote monitoring, outright, it drew a clear line that periodic in-person visits are essential.
The FDA also cautioned consumers not to confuse "registration" with "authorization" when choosing a product. Some companies tout being "FDA-registered," but that only means the manufacturer has listed its facility and products with the agency; it does not mean the FDA has reviewed and approved the product, which is what "FDA-authorized" means. Consumers can ask their dentist directly or search the FDA's 510(k) database using product code "NXC" to check whether a product has been authorized.
The AAO's Demands and the Sales Model the Warning Targets
This guidance is also the result of a long-running push by the American Association of Orthodontists (AAO). AAO President Mike Durbin said the announcement "reflects years of sustained advocacy by the AAO and its members to elevate patient health and safety concerns associated with clear aligner treatment provided without appropriate clinical oversight." Last September, the AAO also submitted a letter signed by 1,745 members documenting reported side effects from products sold without a prescription.
Products like Invisalign, which a dentist prescribes in-office and manages step by step, are not the target of this warning. What the FDA is targeting is a sales model that skips diagnosis and prescription altogether, mailing an entire set of aligner trays to consumers based on nothing more than a questionnaire or a few photos. SmileDirectClub, the U.S. company that popularized this model, shut down after going bankrupt in late 2023, but this warning reads more as a reaffirmation aimed at the industry as a whole.
Korea's Crackdown on Overseas Direct Purchases and Device Classification
The same type of product has already been the target of a crackdown in Korea once before. Korea's Ministry of Food and Drug Safety identified and blocked access to 92 websites that advertised and sold clear aligners through overseas direct purchases or purchase-proxy services in 2023. At the time, Baek Seung-hak, then president of the Korean Association of Orthodontists, stressed that patients should decide whether to use these devices after an accurate diagnosis and consultation with an orthodontist.
In Korea, clear aligners are classified as a Class II medical device called "orthodontic appliance resin," and they cannot be legally used without a dental diagnosis. In the United States, the problem has been products shipped directly without a prescription; in Korea, bringing in the same products through overseas direct purchases or purchase-proxy services carries a similar risk. What anyone considering treatment can do right now is check whether the clear aligners they are using or plan to use come with a dentist's prescription and regular checkups.