The major advantage of the photographic marker is that identity is easily ascertained by lay persons with the unassisted eye (bar codes require a hand-held reading device); photographic markers are also relevant in the Indian context where one-third of the population is illiterate and diverse scripts are used across the country, making interpretation of written data challenging at times. This allows for photographic markers' routine use in residential and hospital set-ups. Although the photographic marker has low fire resistance, it may be useful in forensic contexts since dentures retained in the mouth are well-protected by the oro-facial tissues and may survive incineration.
Objectives: The aim of this study was to synthesize visible light activated titanium dioxide (TiO 2) nanoparticles using titanium nitride (TiN) by solution route to determine its antimicrobial activity against Staphylococcus aureus when combined with heat cure polymethyl methacrylate denture base resins (PMMA) in three different combinations. Methods: Visible light activated as-prepared TiO 2 photocatalyst was synthesized by peroxide based solution route technique using TiN. Part of the as-prepared TiO 2 was annealed and anatase form was obtained. Physical properties of the material were evaluated by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive Xray spectroscopy (EDAX) and Fourier transform infrared spectroscopy (FTIR). TiO 2 (3 w%, 5 w%)-PMMA composite samples (incorporated, precuring or post-curing coating) and unblended acrylic samples were prepared. They were placed in saline and exposed to light for 1 day, 1 week, 1month, 3 months and 6 months in a halogen light system specially fabricated for this study. Then the samples were subjected to microbiological tests to determine the inhibitory activity against S. aureus. Based on visible turbidity changes in the broth containing samples the antibacterial activity was reported. Statistical analysis of the data was done to interprete the results. Results: XRD, SEM, EDAX and FTIR showed better patterns with anatase form. This material showed consistent and reliable inhibitory activity in all forms when combined with PMMA in three different combinations. The best results were achieved at 3 w% concentration of TiO 2. Conclusion: 3 w% of anatase TiO 2 upon incorporation and postcuring coating with PMMA shows promising inhibitory activity against S.aureus. Clinical significance: To decrease the load of oral microflora on dentures by utilising visible light activated TiO 2 photocatalyst especially in elderly and handicapped denture wearers.
Evaluation of understanding levels of Indian dental students' knowledge and perceptions regarding older adults Abstract Increasing numbers of older people and decreasing rates of edentulism highlight the importance of dental education that focuses on oral health and ageing. Our evaluation study was carried out to assess the Indian dental graduate's geriatric knowledge, as well as their awareness, of the bio-psychosocial factors that are potential barriers to geriatric oral health care. A total of 98 students were evaluated during their rotational clinical posting in the fifth year of the dental education programme. The results suggest that general attitudes need to be changed by the inclusion of geriatric dentistry in the dental curriculum. Exposure of students to didactic and clinical setting appears to be a critical element towards positive knowledge and attitude of the elderly.
Handicap due to the loss of teeth in patients can be severe due to the impairment of masticatory function and facial disfigurement leading to negative psychological impact on the individual. To combat this, apart from the regular measures of positioning the teeth to obtain lip support, excellent denture esthetics can be achieved by providing additional support to the slumped tissues. This clinical report highlights a technique to provide support for sunken cheeks using detachable acrylic cheek plumpers, retained using iron-neodymium close-field magnets. The use of these magnets is a modification from the conventional technique of supporting the slumped tissues.
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