Disease activation maps for subgingival dental calculus identification based on intelligent dental optical coherence tomography

Abstract

During the treatment of periodontitis, removal of dental calculus is essential but still tricky despite developments of several imaging modalities. In this research, we propose a novel approach to provide an intuitive guidance, to automatically detect the present of subgingival calculus, and to identify the site of the lesion in optical coherence tomography images based on convolutional neural network model and the class activation maps technique. Our result shows good visualizations of dental calculus both in B‐scan and in volumetric view. We believe the improvement can break down the technical barrier and finally facilitate the prevalence of dental optical coherence tomography.

Differentiation of primary central nervous system lymphoma from glioblastoma using optical coherence tomography based on attention ResNet

“…As published beforehand, 37 the same OCT system in our laboratory was employed in this research. A single-mode fiber-based Mach–Zehnder interferometer configuration was utilized in our OCT system design.…”

Use of digital techniques in the diagnosis of oral diseases in children

“…It is possible to test soft tissues using this method. This imaging technique was first used in 1998 to examine the tissues of the oral cavity and teeth, and it turned out that OCT provides good opportunities for imaging enamel cracks, caries, and calculus [30]. In these studies, images from coherence tomography showing subgingival calculus were used to train the neural network to enable quick diagnosis of the presence of a subgingival calculus.…”

“…In the experiment the detection of subgingival calculus using ANN on optical coherence tomography images was 94.95% efficient. The results of such research performed so far outside the oral cavity are very promising, and it seems that the combination of OCT imaging technique and an artificial neural network for assessing the presence of a subgingival calculus is an objective, efficient, and quick method [30].…”

A Conceptual Model of Dual-Mode Tomography Technique for Dental Diagnostics: Ultrasound and Light Propagation Analysis.

“…However, OCT's image acquisition and FOV limitation can be overcome by combining OCT with ultrasound technique. The previous study proved that combining both techniques can reduce multiple scattering as measured by the point spread function (PSF) by at least 20% [5] [6].…”