𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Determination of dental decay rates with optical coherence tomography

✍ Scribed by A.Z. Freitas; D.M. Zezell; M.P.A. Mayer; A.C. Ribeiro; A.S.L. Gomes; N.D. Vieira Jr.

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
176 KB
Volume
6
Category
Article
ISSN
1612-2011

No coin nor oath required. For personal study only.

✦ Synopsis

We report the use of optical coherence tomography (OCT) to detect and quantify demineralization process induced by S. mutans biofilm in third molars human teeth. Artificial lesions were induced by a S. mutans microbiological culture and the samples (N = 50) were divided into groups according to the demineralization time: 3, 5, 7, 9, and 11 days. The OCT system was implemented using a light source delivering an average power of 96 ΞΌW in the sample arm, and spectral characteristics allowing 23 ΞΌm of axial resolution. The images were produced with lateral scans step of 10 ΞΌm and analyzed individually. As a result of the evaluation of theses images, lesion depth was calculated as function of demineralization time. The depth of the lesion in the root dentine increased from 70 ΞΌm to 230 ΞΌm (corrected by the enamel refraction index, 1.62 @ 856 nm), depending of exposure time. The lesion depth in root dentine was correlated to demineralization time, showing that it follows a geometrical progression like a bacteria growth law.

Depth of the lesion in the root dentine, ΞΌm

πŸ“œ SIMILAR VOLUMES

Ability of optical coherence tomography
Ability of optical coherence tomography to detect caries beneath commonly used dental sealants
✍ Jennifer S. Holtzman; Kathryn Osann; Jessica Pharar; Kenneth Lee; Yeh-chan Ahn; πŸ“‚ Article πŸ“… 2010 πŸ› John Wiley and Sons 🌐 English βš– 195 KB

## Abstract ## Background and Objective The onset and progression of early tooth decay is often preventable with dental sealants. However, occasionally decay progresses underneath the sealant. Current technology does not permit monitoring of potential lesion progression or arrest. Dental sealants

Clinical optical coherence tomography co
Clinical optical coherence tomography combined with multiphoton tomography of patients with skin diseases
✍ Karsten KΓΆnig; Marco Speicher; Rainer BΓΌckle; Julia Reckfort; Gordon McKenzie; J πŸ“‚ Article πŸ“… 2009 πŸ› John Wiley and Sons 🌐 English βš– 356 KB

## Abstract We report on the first clinical study based on optical coherence tomography (OCT) in combination with multiphoton tomography (MPT) and dermoscopy. 47 patients with a variety of skin diseases and disorders such as skin cancer, psoriasis, hemangioma, connective tissue diseases, pigmented

Real-time tracking of vocal fold injecti
Real-time tracking of vocal fold injections with optical coherence tomography
✍ James A. Burns; Ki Hean Kim; James B. Kobler; Johannes F. deBoer; Gerardo Lopez- πŸ“‚ Article πŸ“… 2009 πŸ› John Wiley and Sons 🌐 English βš– 450 KB

## Abstract ## Objectives/Hypothesis: Optical coherence tomography (OCT) is a promising new imaging modality that can help discern the layered microstructure of vocal folds. In the future, subepithelial injections of implants will improve vocal fold pliability where there is stiffness of phonatory

Assessment of wave propagation on surfac
Assessment of wave propagation on surfaces of crystalline lens with phase sensitive optical coherence tomography
✍ R.K. Manapuram; S.A. Baranov; V.G.R. Manne; N. Sudheendran; M. Mashiatulla; S. A πŸ“‚ Article πŸ“… 2010 πŸ› John Wiley and Sons 🌐 English βš– 131 KB

We propose a real-time technique based on phasesensitive swept source optical coherence tomography (PhS-SSOCT) modality for noninvasive quantification of very small optical path length changes produced on the surface of a mouse crystalline lens. Propagation of submicron mechanical waves on the surfa