Nondestructive observation of teeth post core space using optical coherence tomography: a pilot study.

Area of Science:

• Dental materials science
• Biomedical imaging
• Endodontics

Background:

• Optical coherence tomography (OCT) is effective for observing coronal tooth lesions.
• Its utility in visualizing root canal fill materials requires further investigation.

Purpose of the Study:

• To assess the capability of OCT in detailing resin core build-ups within root canals.
• To evaluate the impact of cementum presence on OCT imaging of root canal internal structures.

Main Methods:

• A pilot study utilized OCT to examine resin core build-ups in root canals at multiple stages.
• Two groups were compared: one with cementum removed, and one with intact cementum.
• Specific dental materials (Clearfil Bond SE ONE and Clearfil DC Core Automix ONE) were employed.

Main Results:

• OCT successfully visualized internal root structures and resin core build-ups.
• Bubbles within the resin core and gaps between the core and dentin were detected.
• Image clarity was significantly enhanced in the absence of cementum.

Conclusions:

• OCT is a promising tool for evaluating the quality of resin core build-ups in root canals.
• Removing cementum improves OCT visualization of root canal internal anatomy and potential defects.