Related Experiment Video
Updated: Feb 13, 2026

Doppler Optical Coherence Tomography of Retinal Circulation
Published on: September 18, 2012
Evaluation of marginal gap of lithium disilicate glass ceramic crowns with optical coherence tomography
Wenhao Li1, Jingming Liu2, Zhenting Zhang3
1Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Depa, China.
Abstract:
Marginal gap (MG) was the most important factor to evaluate the success of crowns. The study was to assess the MG of lithium disilicate glass ceramic crowns with spectral domain optical coherence tomography (OCT) and stereomicroscopy in vitro, and to provide evidence to measure the MG with OCT. Consistency was observed between OCT and stereomicroscopy to measure the MG after cementation. There was no significant difference between the MG of lithium disilicate glass ceramic crowns using OCT and stereomicroscopy (OCT 59.55 ± 7.22 μm, stereomicroscope 59.48 ± 6.53 μm, P = 0.736) after cementation. OCT was a noninvasive diagnostic technique to measure the MG of lithium disilicate glass ceramic crowns.
Related Concept Videos
Crown Ethers
The Looking Glass Self
Gap Junctions
Gap Junctions
Margin of Error
Self-Evaluation: Self-Enhancement and Self-Verification

