Navigation Links
Characterization of tooth decay

Quick and quantitative analytical evaluation of tooth decay is required in any study of the environmental factors promoting such decay. This information is essential to any study of which dental products are most effective in slowing or arresting the decay.

Teeth are naturally fluorescent solids, and are highly-scattering samples that can introduce interference that would mask fluorescence indicators. Thus, a SPEX FLUOROLOG spectrofluorometer was selected, taking advantage of double monochromators for ultra-pure spectra. Use of a FLUOROLOG allowed picosecond time-discrimination via the FLUOROLOG-Tau lifetime accessory for even more information about the samples.

Fig. 1 shows a contour plot of the excitation-emission matrix of the sample. The plot results from scanning the fluorescence at various excitation wavelengths. The clean enamel surface exhibited two large fluorescence bands at 430 and 470 nm.

Fig. 2 shows a surface heavily damaged by decay. Though the 430- and 470-nm peaks were still present, their relative intensities were reversed. In addition, a new peak surfaced at 650 nm. Lifetime data from the FLUOROLOG-Tau confirmed that there was indeed a third component present at 650 nm, with a long lifetime of about 600 ns.

The FLUOROLOG system provides a quantitative assessment of tooth decay, via the FLUOROLOGs exclusive strong stray-light rejection, and ability to detect IR fluorescence.

The FLUOROLOG-Tau accessory provides an additional dimension of discrimination. With these data, new dental treatments and products may be assessed. Further work may lead to a quick, convenient meth od of tracing decay.

back to top


Page: All 1 2

Related biology technology :

1. Characterization of Protein Oligosaccharides Using MSn
2. Purification and Characterization of beta-Lactoglobulin Genetic Variants A and B Using Preparative Electrophoresis and Isoelectric Focusing
3. Isolation and Characterization of Anti-Viral Nucleoside Compounds from the Chinese Herb Taraxacum Mongolicum
4. A Robust LC/MS/MS Method for the Quantitation of Very Long Chain Fatty Acids for Research into the Characterization of Peroxisomal Disorders
5. Sciclone ALH 3000 Liquid Handler: Functional Characterization of the High Volume Head - Part 1: Plate-to-Plate Precision Testing
Post Your Comments:

(Date:10/12/2017)... (PRWEB) , ... October 12, 2017 , ... ... for two-dimensional representations of a complex biological network, a depiction of a system ... big mess,” said Dmitry Korkin, PhD, associate professor of computer science at Worcester ...
(Date:10/12/2017)... ... October 12, 2017 , ... AMRI, a global contract ... to improve patient outcomes and quality of life, will now be offering its ... attributed to new regulatory requirements for all new drug products, including the finalization ...
(Date:10/11/2017)... USA (PRWEB) , ... October 11, 2017 , ... ComplianceOnline’s ... take place on 7th and 8th June 2018 in San Francisco, CA. The Summit ... as well as several distinguished CEOs, board directors and government officials from around the ...
(Date:10/11/2017)... ... October 11, 2017 , ... ... implantation and pregnancy rates in frozen and fresh in vitro fertilization (IVF) ... and maternal age to IVF success. , After comparing the results from the ...
Breaking Biology Technology:
(Date:5/23/2017)... May 23, 2017  Hunova, the first robotic gym for the rehabilitation ... officially launched in Genoa, Italy . The first 30 ... and the USA . The technology was developed and ... by the IIT spin-off Movendo Technology thanks to a 10 million euro ... Release, please click: ...
(Date:4/24/2017)... , April 24, 2017 ... and partner with  Identity Strategy Partners, LLP (IdSP) ... "With or without President Trump,s March 6, 2017 ... Terrorist Entry , refugee vetting can be instilled with ... resettlement. (Right now, all refugee applications are suspended ...
(Date:4/13/2017)... April 13, 2017 UBM,s Advanced Design and ... will feature emerging and evolving technology through its 3D ... will run alongside the expo portion of the event ... and demonstrations focused on trending topics within 3D printing ... and manufacturing event will take place June 13-15, 2017 at ...
Breaking Biology News(10 mins):