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Synthesis of wrinkled mesoporous silica and its reinforcing effect for dental resin composites

Dental resin-based composites have been widely used as hard tissue substitutes to restore dental caries and other defects since the early 1960s, thanks to their superior aesthetics and biocompatibility over dental amalgams [1 –4]. These composites are primarily comprised of inorganic filler particles dispersed in a resin matrix which can be polymerized under a blue light irradiation. Despite recent advances in the optimization of monomer structures and filler compositions, the fracture of resin composite restorations i s still one of the main causes for failure in clinical applications, which prevents their applications in high-load and large area restorations [5–8].
Source: Dental Materials - Category: Materials Science Authors: Source Type: research

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Discussion In the US during 2011, ~60,000 youth were incarcerated at some time in a correctional facility. Boys are detained more than girls (86% vs 14% respectively in the US, 95% male in the United Kingdom in 2014) but girls have more health issues. There are racial and ethnic differences with 38-40% of detainees being black, 23% being Hispanic/Latino and 32% being white, and 5% other. For detained youth, 5% are for violent crimes, 22% for non-violent property crimes and the majority of the rest are for non-violent offices such as substance use. The average length of detainment is 3-4 months and unfortunately the rates o...
Source: PediatricEducation.org - Category: Pediatrics Authors: Tags: Uncategorized Source Type: news
This study was conducted among 2000 people 15-40 years of age living in Kurdistan, Iran in 2015. Using a questionnaire, data were collected by 4 trained dental students. The dependent variable was the decayed, missing, and filled teeth (DMF) index. Using principal component analysis, the socioeconomic status (SES) of families was determined based on their household assets. Inequality was measured using the concentration index; in addition, the Oaxaca analytical method was used to determine the contribution of various determinants to the observed inequality. Results: The concentration index for poor scores on the DMF in...
Source: Journal of Preventive Medicine and Public Health - Category: International Medicine & Public Health Tags: J Prev Med Public Health Source Type: research
In conclusion the tested EO's may be considered as a potential natural source with a resistance-modifying activity and may be applied to eradicate bacterial biofilm.
Source: Microbial Pathogenesis - Category: Infectious Diseases Source Type: research
AbstractIntroductionThe application of metabolomic analysis in the pediatric nephrology field may offer an innovative approach to profile analysis of renal diseases.ObjectiveWe aimed to analyze the salivary the major metabolites in the saliva of children and adolescents with chronic kidney disease (CKD) before and after hemodialysis.MethodThirty-six children diagnosed with CKD and forty healthy children were recruited for the study.1H-NMR spectra were analyzed using multivariate and univariate  approaches.ResultsThe CKD and the healthy control groups presented with similar numbers of dental caries (p  > &thi...
Source: Metabolomics - Category: Biology Source Type: research
ABSTRACT Objective To assess oral hygiene habits, and prevalence of dental caries and erosion in adolescents of Campina Grande, Para íba, Brazil. Methods Cross-sectional study with random cluster sampling involving 201 15-year-old schoolchildren. Oral health habits were obtained through questionnaire, and socioeconomic data, by means of interviews. The DMFT index was adopted to determine the prevalence of caries and that propos ed by O ’ Sullivan, to assess dental erosion. Data were analyzed using the Statistical Package for Social Sciences (SPSS) version 18. A 5% significance level was adopted. Results All su...
Source: RGO - Revista Gaucha de Odontologia - Category: Dentistry Source Type: research
Conclusions Arginine-containing toothpaste can significantly reduce the lactic acid production from the in situ plaques to a low level without changing the metabolic activity, live/dead bacteria ratio and total biofilm biomass through a critical clinical randomized double-blinded crossover study. Clinical significance Arginine is a potential ecological prevention and control agent for dental caries. Meanwhile, the in situ model is an easy and pragmatic way to evaluate oral hygiene products (clinical trial registration: ChiCTR-INR-16010226).
Source: Journal of Dentistry - Category: Dentistry Source Type: research
Conclusion Average proportion of arrested caries lesions in the silver diamine fluoride group was higher (0.72; 95% CI; 0.55, 0.84) than in the placebo group (0.05; 95% CI; 0.00, 0.16). Confirmatory analysis using generalized estimating equation log-linear regression, based on the number of arrested lesions and accounting for the number of treated surfaces and length of follow-up, indicates the risk of arrested caries was significantly higher in the treatment group (relative risk, 17.3; 95% CI: 4.3 to 69.4). No harms were observed. RNA sequencing analysis identified no consistent changes in relative abundance of caries-ass...
Source: Journal of Dentistry - Category: Dentistry Source Type: research
Abstract A paper published in this journal, “Measuring the short‐term impact of fluoridation cessation on dental caries in Grade 2 children using tooth surface indices,” by McLaren et al had shortcomings in study design and interpretation of results, and did not include important pertinent data. Its pre–post cross‐sectional design relied on comparison of decay rates in two cities: Calgary, which ceased fluoridation, and Edmonton, which maintained fluoridation. Dental health surveys conducted in both cities about 6.5 years prior to fluoridation cessation in Calgary provided the baseline. They...
Source: Community Dentistry and Oral Epidemiology - Category: Dentistry Authors: Tags: COMMENTARY Source Type: research
Conclusion: The current caries scores in preschoolers are low and similar to those reported in other western European countries. Nevertheless, as very early childhood is a key opportunity to intervene, an effort must be made to provide clear oral health guidance and increase the cooperation among all health professionals.
Source: Oral health and Preventive dentistry - Category: Dentistry Source Type: research
Conclusion: Although caries prevalence and experience was relatively low in infants, one third of all children were categorised as being at high caries risk. Early dental visits are necessary to detect the first signs of caries, to assess the caries risk and to establish a dental home with a risk-related recall system. The caries-risk assessment tool (CAT) of the AAPD can assist the clinician in the decision-making process.
Source: Oral health and Preventive dentistry - Category: Dentistry Source Type: research
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