Context: The success of endodontic treatment therapy depends on how well we eliminate pathogenic microflora from the root canal system as micro organism as the major cause of root canal infection. Conventional root canal treatment can fail if microorganisms cannot be removed sufficiently by thorough cleaning, shaping of root canal. Newer modalities such as photodynamic therapy are being tried now a days for disinfection of root canals. Aim & Objectives:The basic aim of this study was assessment of the antimicrobial efficacy of Photodynamic Therapy in deeper dentinal tubules for effective disinfection of root canals using microbiological and scanning electron microscopic examination in vitro. Materials and Methods:The study was conducted at Teerthanker Mahaveer Dental College & Research Centre. The teeth required for study was collected from Department of Oral and Maxillofacial Surgery. Only freshly extracted 20 intact, non carious single rooted teeth which were indicated for orthodontic treatment were taken for this study. Statistical analysis was done using Student's Unpaired t-test were at (p<0.001) was found to be highly significant. Microbiological examination of samples were done and colony forming units were counted to assess the disinfection potential of photodynamic therapy. Scanning electron microscopic examination of samples was done to check penetration of bacteria's into deeper dentinal tubules.Results: On examination, there was a marked reduction in microbial growth after use of photodynamic therapy. On scanning electron microscopic examination, it was observed that there were less number of bacteria's in deeper dentinal tubules in case of PDT group as compared to control group. Conclusion:The results of the present study indicate that PDT can be effectively used during antimicrobial procedures along with conventional disinfection procedure for sterilization of root canals.
Abstract. Background: To date, no longitudinal prospective study has investigated the association between oral health status and cognitive decline in the geriatric Indian population, possibly because past studies differed in their target groups and methodologies. We investigated the association between tooth loss, as evaluated through clinical oral examinations, and the development of cognitive decline in older adults while considering baseline cognitive function. Objectives: This study served to find an association between oral health status and the subsequent development of cognitive decline in older adults of Maharashtra state while considering baseline cognitive function. Material and Methods: This 5-year prospective cohort study followed 140 participants without cognitive impairment aged ≥ 65 years (mean age: 70.9 ± 4.3 years) living in the Dhule region of Maharashtra, India. Cognitive function was evaluated with the Mini-Mental State Examination (MMSE) in baseline and follow-up surveys, while oral health examination was carried out using Oral Hygiene Index. To investigate the association between oral health status and cognitive decline, we applied a multiple logistic regression analysis adjusted for age, sex, hypertension, diabetes, cerebrovascular/cardiovascular disease, hypercholesterolemia, depressive symptoms, body mass index, smoking status, drinking status, duration of education, and baseline MMSE score. Results: In the 5 years after the baseline survey, we obtained an overall incidence of 20.71% in the population that developed cognitive decline (i.e., MMSE scores of ≤ 24). A multivariable logistic regression analysis indicated that participants with compromised oral health were more likely to develop cognitive decline than those with mild to moderate oral health were (odds ratio: 3.31; 95% confidence interval: 1.07–10.2). Age, male sex, and baseline MMSE scores were also significantly associated with cognitive decline. Conclusion: Among the geriatric population of India, poor oral health status was independently associated with the development of cognitive decline within 5 years. This finding corroborates the hypothesis that oral health may be a predictor or risk factor for cognitive decline.
Significant association exists between oral health awareness and periodontal health with the socio-economic status of the individual.
Nanorobotics is the technology of creating machines or robots at or close to the microscopic scale of a nanometer (10–9 meters). These nanorobots allow precision interactions with nanoscale objects or can manipulate with nanoscale resolution. Treatment opportunities in dentistry may include local anesthesia, dentition renaturalization, and permanent hypersensitivity cure, complete orthodontic realignments during single office visit, and continuous oral health maintenance using mechanical dentifrobots. Dental nanorobots could be constructed to destroy cariescausing bacteria or to repair tooth blemishes where decay has set in, by using a computer to direct these tiny workers in their tasks. Recent advances in the field of nanorobots prove that nanodentistry has strong potential to revolutionarize dentistry to diagnose and treat diseases. Although research into nanorobots is still in its primary stage, the promise of such technology for its use in future generation is endless! How to cite this article Dalai DR, Gupta D, Bhaskar DJ, Singh N, Jain A, Jain A, Singh H, Kadtane S. Nanorobot: A Revolutionary Tool in Dentistry for Next Generation. J Contemp Dent 2014;4(2):106-112.
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