Feature Of The Week 5/9/10: Optical Coherence Tomography for Real-Time Imaging of Polymerization Shrinkage in Dental Composites
Feature Of The Week 5/9/10: Dentistry is becoming an increasingly hot topic in optical coherence tomography as the promise for a real-time, high-resolution, non-ionizing radiation in a compact and low-cost system suitable for both research and commercial installations in dental offices comes closer. For example, OCT enables cross-sectional and 3D visualization of the changes in the complex surface displacement, shrinkage direction, tissue deformation, and gap generation that occur during dental procedures such as those that take place during polymerization shrinkage in applying dental composites.
The work shown here, from leading researchers at the Global Center of Excellence (GCOE), Tokyo Medical and Dental University as well as the National Center for Geriatrics and Gerontology, presents very interesting results on real-time tomographic imaging capability of Swept-Source detection OCT (SS-OCT). In order to take advantage of SS-OCT in dentistry, the researchers at Tokyo Medical and Dental University are developing new hardware, software and techniques for both research and clinical purposes. For decades, dental researchers have been discussing the effects of polymerization shrinkage of methacrylate-based resin composites, solely based on assumptions or indirect measurements. The presentation shown here illustrates impressive results in how OCT provides qualitative and quantitative information in this important area.