Fig. 5
From: A perspective on the diagnosis of cracked tooth: imaging modalities evolve to AI-based analysis
Copyright © 2017. Korean Academy of Periodontology publishing
Comparison study of four crack detection methods: (a–c) images from trans-illumination detection; (d–f) images from intraoral radiography; (g–i) images from CBCT; (j–l) images from OCT. The red line indicates the cross section of CBCT and the OCT scan line. Red and blue arrows indicate crack lines. The blue circle indicates a false-positive crack in trans-illumination detection. The image resource was cited from reference [53].