Oral Lesions at Occlusal Plane May Indicate Cinnamon-induced contact stomatitis, suggests study

The nature of the oral lesions varied, as 7 patients developed white plaque-like or lichenoid patches, resembling other chronic oral conditions and 26 patients presented with painful red, erosive, or ulcerative lesions. The largest group, 41 individuals, displayed a combination of whitish and red lesions, often mimicking other inflammatory oral diseases.

Also, once the patients discontinued the use of cinnamon-flavored gums or candies, all cases showed complete resolution within just one week. None of the patients experienced a recurrence, provided they avoided re-exposure to these cinnamon products.

This research reviewed previously reported cases and identified 40 well-documented examples of CCS tied to cinnamon-flavored gums, candies, and mints. In each instance, a clear temporal link between cinnamon consumption and oral lesion development was observed, supported by either clinical or histopathological images.

Overall, the findings suggest the importance of recognizing CCS as a potential cause of oral discomfort and lesions that may otherwise be mistaken for chronic inflammatory or autoimmune conditions. Dentists and clinicians are advised to consider CCS when patients present with unexplained white or red oral lesions, especially if these appear along the occlusal plane, which is the area where teeth meet during chewing. While cinnamon remains a popular flavor in gums and candies, this study highlights the need for caution among frequent consumers who develop unexplained mouth lesions. 

Source:

Kalogirou, E.-M., Aktypi-Bampouranou, A., Vasilaki, M., Chatzidimitriou, K., & Tosios, K. I. (2025). Cinnamon-induced contact stomatitis: A retrospective study of 74 cases and literature review. Oral Diseases, odi.70081. https://doi.org/10.1111/odi.70081