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:11/25/2015)... (PRWEB) , ... November 25, 2015 , ... ... and the Organization of Black Aerospace Professionals (OPBAP) has been formalized with the ... other AMA team leaders met with OPBAP leaders Capt. Karl Minter and Capt. ...
(Date:11/25/2015)... ... November 25, 2015 , ... ... featured on AngelList early in their initial angel funding process. Now, they are ... individuals looking to make early stage investments in the microbiome space. In ...
(Date:11/24/2015)... 2015 Cepheid (NASDAQ: CPHD ) today ... following conference, and invited investors to participate via webcast. ...      Tuesday, December 1, 2015 at 11.00 a.m. Eastern Time ...      Tuesday, December 1, 2015 at 11.00 a.m. Eastern Time ... New York, NY      Tuesday, December 1, 2015 ...
(Date:11/24/2015)... ... November 24, 2015 , ... Copper is ... it is bound to proteins, copper is also toxic to cells. With a ... Polytechnic Institute (WPI) will conduct a systematic study of copper in the bacteria ...
Breaking Biology Technology:
(Date:10/27/2015)... BERLIN, Germany , October 27, 2015 ... 2015. SMI,s Automated Semantic Gaze Mapping technology (ASGM) automatically ... SMI,s Eye Tracking Glasses , so that ... Suite BeGaze. --> Munich, Germany ... technology (ASGM) automatically maps data from mobile eye tracking ...
(Date:10/26/2015)... LAS VEGAS , Oct. 26, 2015 /PRNewswire/ ... innovator in modern authentication and a founding member of ... of its latest version of the Nok Nok™ S3 ... use standards-based authentication that supports existing and emerging methods ... is ideal for organizations deploying customer-facing applications that require ...
(Date:10/23/2015)... and GOLETA, California , October 23, ... BIOPAC and SensoMotoric Instruments (SMI) announce a mobile plug ... data captured during interactive real-world tasks SensoMotoric ... integration of their established wearable solutions for eye tracking ... gaze behavior captured with SMI Eye Tracking Glasses ...
Breaking Biology News(10 mins):