Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2020 Oct 12;9(10):3257. doi: 10.3390/jcm9103257

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

In vivo imaging of hard tooth tissues (a–f), intrinsic structures, and defects in enamel ((b–d), arrows). Partially also Retzius lines (RL; (c)) and superficial tissue structures of the gingiva (f) are indicated. (e) Premolar with vestibular brown discoloration. The OCT cross-sectional image (f) showed that besides the discoloration a carious lesion in enamel (L) is present. The lesion body appears as a bright zone with clear shadowing. Scales are related to refractive index n = 1.0. While the horizontal scale in an OCT cross-sectional image is independent of the refractive index (n) of the tooth structures, the length of the vertical scale has to be divided by it (mean n for enamel and dentin approx. 1.5). Enamel (E), dentin (D), enamel-dentin junction (EDJ), gingiva (G), region of interest (ROI).