http://hdl.handle.net/2173/31432 Sat, 18 May 2013 20:04:04 GMT 2013-05-18T20:04:04Z http://hdl.handle.net/2173/107442 Title: Surface topography and physicochemistry of silver containing titanium nitride nanocomposite coatings Authors: Whitehead, Kathryn A.; Kelly, Peter; Li, Heqing; Verran, Joanna Description: Full-text of this article is not available in this e-prints service. This article was originally published following peer-review in Journal of Vacuum Science and Technology. Part B. Microelectronics and Nanometer Structures, published by and copyright American Institute of Physics. Fri, 01 Jan 2010 00:00:00 GMT http://hdl.handle.net/2173/107442 2010-01-01T00:00:00Z http://hdl.handle.net/2173/87514 Title: QLF is not readily suitable for in vivo denture plaque assessment. Authors: Coulthwaite, Lisa; Pretty, Iain A.; Smith, Philip W.; Higham, Susan M.; Verran, Joanna Abstract: OBJECTIVES: Current methods available for denture plaque assessment utilise visual and planimetric techniques. This paper evaluates the use of the Quantitative Light-induced Fluorescence system (QLF) in image capture of denture plaque and the suitability of these images for planimetric plaque measurement. It is proposed that fluorescence imaging could provide a valuable and sensitive standardising method for plaque assessment in clinical trials for denture cleansing products and denture hygiene. Indeed, the detection of red fluorescent plaque using the QLF system is indicative of black-pigmented obligate anaerobes and mature plaque. METHODS: The QLF system was evaluated in a clinical study for use in denture plaque assessment in comparison to white light based image capture. RESULTS: Despite appearing as a promising system for denture plaque quantification, this study revealed numerous problems associated with the QLF system including small focal depth, thus large numbers of images and processing time were required. In addition, differential fluorescence of acrylic made images unsuitable for plaque quantification. CONCLUSION: QLF is unsuitable for in vivo denture plaque assessment. However, the visualisation of red autofluorescence, indicating mature plaque, remains an important clinical use of QLF for denture hygiene assessment. Description: Full-text of this article is not available in this e-prints service. This article was originally published following peer-review in Journal of Dentistry, published by and copyright Elsevier. Sun, 01 Nov 2009 00:00:00 GMT http://hdl.handle.net/2173/87514 2009-11-01T00:00:00Z http://hdl.handle.net/2173/71614 Title: Denture plaque, denture stomatitis and the adhesion of Candida to inert materials Authors: Verran, Joanna Fri, 01 Jan 1999 00:00:00 GMT http://hdl.handle.net/2173/71614 1999-01-01T00:00:00Z http://hdl.handle.net/2173/71613 Title: The effect of substratum surface defects upon retention of, and biofilm formation by, microorganisms from potable water Authors: Verran, Joanna; Hissett, T. Fri, 01 Jan 1999 00:00:00 GMT http://hdl.handle.net/2173/71613 1999-01-01T00:00:00Z