A Spike in Broken Oral Appliance Reports Raises Questions

Oral appliances, such as mandibular advancement devices, have been used for over a decade to treat obstructive sleep apnea (OSA). These devices work by advancing the lower jaw forward, keeping the airway open during sleep. However, a recent study has found a significant increase in adverse event reports for these devices. The study, conducted by dentists Sue Ellen Richardson and Aaron Glick, examined the FDA's MAUDE database for reports of oral appliances used to treat OSA. The database showed a 10.1-fold increase in reports between 2024 and 2025 compared to the preceding four years. ## A Fundamental Shift in Safety Profile The researchers found that the majority of reports in the earlier period (2013-2023) involved allergy or biocompatibility reactions. However, in the later period (2024-2025), the majority of reports involved broken or fractured devices. This shift in safety profile is significant, as it suggests that there may be a problem with the quality of the devices. ## A Single Product Line Accounts for Most Reports The study found that a single product line, Silent Nite, manufactured by Prismatik Dentalcraft, accounted for 97.6% of the reports in the later period. The majority of these reports described fractures in the anchor or hinge components, typically occurring without patient injury. However, the company attributes the spike in reports to internal administrative changes rather than device quality. ## The Role of Direct-to-Consumer Models The emergence of telehealth and direct-to-consumer (DTC) distribution models has introduced new variables into the oral appliance market. The study found that 42 reports involved DTC models, involving nine distinct companies. However, the leadership of one of these companies, Daybreak, argues that the statistics require significant context to avoid misleading clinicians. ## Limitations of the MAUDE Database A central limitation of the MAUDE database is the lack of denominator data - the total number of devices sold or in use. Without this number, it is impossible to calculate the true incidence of failure. The FDA itself cautions that MAUDE data cannot be used to establish or compare event rates because the reporting is passive and voluntary. ## Clinical Implications While the spike in mechanical failure reports is notable, the researchers and manufacturers agree that oral appliances remain a safe and effective treatment for OSA. The majority of reported fractures did not result in patient injury or require medical intervention. However, the study highlights a discrepancy between clinical literature and MAUDE data, suggesting that dentists may be adept at managing clinical side effects in-office. The debate over the MAUDE data also touches on broader concerns regarding the safety and follow-up of telehealth-delivered oral appliances. Critics often argue that remote models may lack the clinical visibility needed to catch problems early. However, Daybreak defends its model, noting that it provides proactive monitoring that can help catch problems early. Ultimately, the study highlights the need for further research into the safety and efficacy of oral appliances, particularly in the context of direct-to-consumer models. It also underscores the importance of transparency and compliance in the medical device industry.