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Assessment of curing behavior of light-activated dental composites using intensity correlation based multiple reference optical coherence tomography

Overview of attention for article published in Lasers in Surgery and Medicine, November 2015
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Title
Assessment of curing behavior of light-activated dental composites using intensity correlation based multiple reference optical coherence tomography
Published in
Lasers in Surgery and Medicine, November 2015
DOI 10.1002/lsm.22447
Pubmed ID
Authors

Roshan Dsouza, Hrebesh Subhash, Kai Neuhaus, Ramakrishna Kantamneni, Paul M. McNamara, Josh Hogan, Carol Wilson, Martin Leahy

Abstract

Monitoring the curing kinetics of light-activated resin is a key area of research. These resins are used in restorative applications and particularly in dental applications. They can undergo volumetric shrinkage due to poor control of the depth dependent curing process, modulated by the intensity and duration of the curing light source. This often results in the formation of marginal gaps, causing pain and damage to the restoration site. In this study, we demonstrate the capabilities of a correlation method applied using a multiple references optical coherence tomography (MR-OCT) architecture to monitor the curing of the resin. A MR-OCT system is used in this study to monitor the curing of the resin. The system operates at the center wavelength of 1310 nm with an A-scan rate of 1200 A-scans per second. The axial and lateral resolution of the system is ∼13 μm and ∼27 μm. The method to determine the intensity correlation between adjacent B-frames is based on the Pearson correlation coefficient for a region of interest. Calculating the correlation coefficient for multiple B-frames related to the first B-frame at regular spaced time points, shows for a noncured resin a reduction of the correlation coefficient over time due to Brownian motion. The time constant of the reduction of the correlation value is a measure for the progress of the polymerization during LED light irradiation of the resin. The proposed approach is potentially a low-cost, powerful and unique optical imaging modality for measuring the curing behavior of dental resin and other resins, coatings, and adhesives in medical and industrial applications. To demonstrate the proposed method to monitor the curing process, a light-activated resin composite from GRADIA DIRECT ANTERIOR (GC Corporation, Japan) is studied. The curing time of resin was measured and monitored as a function of depth. The correlation coefficient method is highly sensitive to Brownian motion. The process of curing results in a change in intensity as measured by the MR-OCT signal and hence can be monitored using this method. These results show that MR-OCT has the potential to measure the curing time and monitor the curing process as a function of depth. Moreover, MR-OCT as a product has potential to be compact, low-cost and to fit into a smartphone. Using such a device for monitoring the curing of the resin will be suitable for dentists in stationary and mobile clinical settings. Lasers Surg. Med. © 2015 Wiley Periodicals, Inc.

Twitter Demographics

The data shown below were collected from the profile of 1 tweeter who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 15 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 15 100%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 3 20%
Student > Master 3 20%
Student > Ph. D. Student 2 13%
Professor 2 13%
Researcher 2 13%
Other 0 0%
Unknown 3 20%
Readers by discipline Count As %
Medicine and Dentistry 5 33%
Pharmacology, Toxicology and Pharmaceutical Science 2 13%
Physics and Astronomy 2 13%
Nursing and Health Professions 1 7%
Engineering 1 7%
Other 0 0%
Unknown 4 27%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 27 November 2015.
All research outputs
#9,738,134
of 12,181,521 outputs
Outputs from Lasers in Surgery and Medicine
#1,091
of 1,263 outputs
Outputs of similar age
#215,056
of 315,409 outputs
Outputs of similar age from Lasers in Surgery and Medicine
#15
of 26 outputs
Altmetric has tracked 12,181,521 research outputs across all sources so far. This one is in the 11th percentile – i.e., 11% of other outputs scored the same or lower than it.
So far Altmetric has tracked 1,263 research outputs from this source. They receive a mean Attention Score of 5.0. This one is in the 6th percentile – i.e., 6% of its peers scored the same or lower than it.
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We're also able to compare this research output to 26 others from the same source and published within six weeks on either side of this one. This one is in the 23rd percentile – i.e., 23% of its contemporaries scored the same or lower than it.