This study evaluated the physicochemical and antibacterial properties of EQUIATM coat liquid (E) after incorporation of zinc oxide (ZnO) and titanium dioxide (TiO2) nanoparticles. ZnO and TiO2 (1 wt.% and 2 wt.%) were dispersed in EQUIA coat. Principal component analysis (PCA) and cluster analysis were performed to visualize systemic variation. Antibacterial activity was evaluated by colony-forming units and crystal violet staining using Streptococcusmutans and Lactobacillusacidophilus after 24 h, 48 h, and 72 h, and the microstructure was studied by scanning electron microscopy. The weight change was analyzed at 1 and 21 days. The PCA for TiO2- and ZnO-based groups showed 100% variance at all spectral ranges at 600–800/cm and 800–1200/cm, whereas 1200–1800/cm and 2700–3800/cm spectral regions demonstrated 99% variance. The absorbance values were significant (p < 0.05) for both nanoparticles-based adhesives, and the specimens with 2 wt.% ZnO showed the maximum response by minimum bacterial attachment, and the control group showed the least response by maximum attachment. The weight change percentage was reduced after the incorporation of antibacterial nanoparticles. It is suggested that EQUIATM coat containing nanoparticles exhibits promising results, and it may be recommended to clinically use as an improved coating material.
The aim of the present study was to find out the reasons of low frequency of dental visits by the patients having one or less than one visit per year. Materials and Methods: A questionnaire-based survey was carried out using convenient sampling technique, in the female dental OPD of College of Dentistry, King Khalid University, Abha, Saudi Arabia. Proformas were filled after interviewing patients having one or less than one per year frequency of dental visits and attending dental OPD on duty days of interviewing doctors. 159 questionnaires were filled. Frequency and percentage of each response were calculated through descriptive statistics using SPSS (V.16). Results: Lack of time was the reason given by 29% of patients, high cost of treatment by 24.5%, fear by 23.9%, difficulty in approaching dental clinics by 23.3%,unawareness by 21%, low income by 20%, personal dislike for dental treatment by 14.5%, pending the visits by 13% and lack of family support for dental treatment by 12% of patients for not attending dental clinics for regular check-ups. Conclusion: Lack of time, high cost of treatment and dental anxiety were the most common reasons for low frequency of dental visits by the patients. Unawareness about the importance of dental health was also a significant factor. Strategies should be adopted to address all the factors and to educate patients at all levels regarding importance of oral and dental health. Proper implementation of these strategies should improve the frequency of visits by the patients for regular dental-checkups. Key words: Dental visits, Frequency, Low attendance, Reasons.
Objective The objective of the present in vitro study was to assess the influence of commonly consumed beverages on the microhardness of microhybrid and nanofilled composite resins. Materials and methods Two hundred and forty cylindrical specimens were produced using circular aluminum molds of an internal diameter of 10 mm and a thickness of 2 mm, 120 samples each from microhybrid composite (Filtek Z250, 3M, ESPE, USA) and nanofilled composite (filtek Z250, 3M, ESPE, USA). They were divided into 4 subgroups of 30 specimens each. These specimens were immersed in distilled water, tea, coffee, and cola drink, respectively. Microhardness was calculated using Vickers microhardness tester (MMT-X7 Matsuzawa, Japan). Data were statistically analyzed using paired t -test and one-way analysis of variance (ANOVA) using Tukey’s correction was used for multiple subgroup comparison. Results Microhardness of both the composites reduced after immersing in different beverages compared to water. Nanofilled composites showed more change in microhardness than microhybrid composite. Cola caused a significant reduction in microhardness followed by coffee, tea, and water. Conclusion The beverages used have negative effects on the hardness of both the type of composites. The surface microhardness of nanofilled composite is significantly reduced when immersed in carbonated beverages like cola. How to cite this article Barve D, Dave PN, Gulve MN, et al. Effect of Commonly Consumed Beverages on Microhardness of Two Types of Composites. Int J Clin Pediatr Dent 2020;13(6):663–667.
Dentists are particularly vulnerable to ergonomically borne musculoskeletal diseases (MSDs), which decrease efficiency, productivity, and career longevity because to the exact and minute nature of their work. Objective: To determine different consequence of work related disorders among dentist of Lahore, Pakistan. Methods: In this cross-sectional survey 450 dentist of Lahore were approached and a structured proforma based survey was conducted using convenience sampling technique. In the study, dentists between the ages of 24 and 65 were included. Musculoskeletal Disorder has been presented in the form of frequency and percentage whereas age has been shown as mean and standard deviation. Chi square test has been applied to determine the association between musculoskeletal disorder and different study variables. P-value of 0.05 has been deemed significant. Results: In this study out of 450 dentists 236 (52.4%) were male and 214 (47.6%) were females. Mean age of the males were 37.08 ± 9.27 years and females were 33.43 ± 10.42 years. Among the subject’s musculoskeletal disorders were reported by 393(87.3%) dentist. Sick leave was availed by 278 (70.7%) whereas 373 (94.9%) seek medical treatment and 325 (82.7%) prevent daily activity. According to Dentist 388 (98.7%) believes that the disorder is caused by Dental Clinic I.e. Ergonomic issue. Conclusions: With two thirds of dentists taking sick time owing to musculoskeletal disorders, combined with the mental stress, it would appear that dentistry is not an easy profession. This would significantly limit the career of dentists.
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