COLLEGE STATION, Texas, US: A new intra-oral biosensor developed in the US could transform how periodontal disease is detected and monitored. Aiming to help shift dentistry toward proactive disease monitoring, researchers at Texas A&M University in College Station have developed an intra-oral patch capable of detecting inflammatory biomarkers. Following successful testing, they say that the device establishes feasibility of effective point-of-care monitoring in the challenging oral cavity environment.
The biosensor is contained in a wearable patch and designed to continuously monitor the levels of target biomarkers within the oral cavity. Adhering directly to oral soft tissue, it targets the tumour necrosis factor alpha protein associated with inflammation and oral disease progression.
The performance of the biosensor was evaluated through in vitro, ex vivo and in vivo tests, which demonstrated effective adhesion, stable function in simulated dynamic oral conditions, and high sensitivity in detecting and quantifying the targeted protein. Study results demonstrated detection limits far below those typically detectable with conventional diagnostic methods.
Co-developer of the device Dr Chenglin Wu, associate professor in the Zachry Department of Civil and Environmental Engineering, explained in a university press release that the biosensor’s high sensitivity is achieved via a sensor surface engineered to detect very small amounts of the target protein, while a filtering layer helps prevent interference from other molecules in the oral environment. Dr Wu said: “For context, a patient with a viral infection might show symptoms at ten million or one billion virus copies per millilitre. Our sensor could detect 100 to 150 per millilitre.”
This sensitivity is supported by a hydrogel that provides robust adhesion. Dr Shaoting Lin, assistant professor at the Michigan State University College of Engineering, who collaborated with Dr Wu in developing the sensor, said in the press release: “Sensing measurements can be significantly influenced by the dynamic movement of tissues. A more robust tissue bond allows for a more reliable sensing performance independent of the strain.”
In their study, the researchers summarised: “Collectively, these findings establish the feasibility of real time in situ monitoring of inflammatory cytokines in the oral cavity and underscore the sensor’s potential for [point-of-care] diagnostics and personalised healthcare. Looking ahead, we aim to evaluate its clinical efficacy through expanded trials further, advancing its integration into routine dental practice and broader community health monitoring platforms.”
Although further validation in human clinical trials is required, the findings suggest broad potential applications. If successfully translated into clinical practice, such biosensors could significantly improve treatment outcomes, reduce healthcare costs and enhance patient engagement in preventive oral healthcare.
The article, titled “Tissue-adhesive hydrogel–MXene biosensor for in situ intraoral TNF-α detection”, was published online in the 16 January 2026 issue of Science Advances.
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