Non-Invasive Periodontal Probing Through Fourier-Domain Optical Coherence Tomography.

Abstract:

BACKGROUND:Periodontitis is a multifactorial and infectious disease that may result in significant debilitation. The aim of this study is to exploit two optical coherence tomography (OCT) systems operating in the Fourier domain at different wavelengths, 930 and 1,325 nm, for structural analysis of periodontal tissue in porcine jaws. METHODS:Five fresh porcine jaws were sectioned and stored in formalin before OCT analysis. Two- and three-dimensional OCT images of the tooth/gingiva interface were performed, and measurements of the gingival structures were obtained. The 930-nm OCT system operates in the spectral domain, whereas the 1,325-nm system is a swept-source model. Stereomicroscope images, the gold standard, were used for direct comparison. RESULTS:Through image analysis, it is possible to identify the free gingiva and the attached gingiva, the calculus deposition over tooth surfaces, and the subgingival calculus that enables the enlargement of the gingival sulcus. In addition, the gingival thickness and the gingival sulcus depth can be non-invasively measured, varying from 0.8 to 4 mm. CONCLUSIONS:Regarding the ability of the two OCT systems to visualize periodontal structures, the system operating at 1,325 nm shows a better performance, owing to a longer central wavelength that allows deeper tissue penetration. The results with the system at 930 nm can also be used, but some features could not be observed due to its lower penetration depth in the tissue.

journal_name

J Periodontol

authors

Mota CC,Fernandes LO,Cimões R,Gomes AS

doi

10.1902/jop.2015.150047

subject

Has Abstract

pub_date

2015-09-01 00:00:00

pages

1087-94

issue

9

eissn

0022-3492

issn

1943-3670

journal_volume

86

pub_type

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