Dong-Eui University Professor Kim Sunghoon's Team Develops New Antibacterial Coating Technology for Transparent Dental Aligners

Dramatic Improvements Expected in Durability and Antibacterial Performance... Further Research on Other Medical Devices

The research team led by Professor Kim Sunghoon from the Department of Applied Chemistry at Dong-Eui University, in collaboration with Professor Oh Jongmin from Kwangwoon University, has developed a "binder-free ceramic powder coating method" that can dramatically enhance the durability and antibacterial performance of transparent orthodontic aligners.

Professor Seunghoon Kim of Dong-Eui University, who developed a new antibacterial coating technology for transparent dental aligners (from left, Professor Seunghoon Kim of Dong-Eui University, Professor Jongmin Oh of Kwangwoon University).

This study, titled "Binder-Free TiO2-Cu Composite Powder Coating for Thermoformable Orthodontic Clear Aligners," is scheduled to be published in the online September issue of the internationally renowned journal in the field of chemical engineering, the Chemical Engineering Journal.

In this research, Professor Kim Sunghoon's team introduced a novel method that directly coats a polyethylene terephthalate glycol (PETG) substrate with a titanium dioxide (TiO2) and copper (Cu) nanocomposite film using aerosol deposition, without employing any organic or inorganic binders.

The ceramic coating layer formed through this method maintained excellent transparency while exhibiting outstanding antibacterial performance. In particular, it demonstrated an antibacterial efficiency of up to 99.9% or higher against Streptococcus mutans (S. mutans), the primary bacteria responsible for dental caries.

The ceramic coating film developed by the research team shows superior abrasion resistance compared to existing commercial PETG substrates, and while maintaining flexibility, it also features enhanced Vickers hardness. This technology is gaining attention as it can meet the aesthetic demands of orthodontic treatment while simultaneously contributing to improved oral health.

Research Overview Diagram.

Professor Kim Sunghoon stated, "This study opens new possibilities for simultaneously improving the antibacterial performance and mechanical durability of transparent aligners without compromising their original aesthetic purpose," adding, "We plan to further explore various ceramic materials and nanocomposites to conduct additional research that can be applied to other medical devices as well."

This content was produced with the assistance of AI translation services.