Using a phosphoroscope and a pulsed light-signal integrator, the effect of alcohol on the delayed fluorescence of indole was investigated in alcohol-isopentane mixed glasses at 77 K. The delayed fluorescence intensity was strongly depended on the alcohol concentration and the polarity of alcohol. Trapped electrons causing the delayed fluorescence were separated into two species utilizing the sc...

Copyright © 2010 American Dental Association. All rights reserved. Reprinted by permission. on Sptem er 1, 2010 jadada.org D ow nladed from lence of asthma has been increasing since the 1980s across all age, sex and racial groups. Asthma appears to be, after dental caries, the most prevalent chronic childhood disease in the United States. In the 1980s, asthma was associated with 500,000 hospita...

The aim of the present study was to investigate the impact of oral diseases, socioeconomic status, and family environmental factors on changes in the perception of oral health-related quality of life (OHRQoL) in adolescents. A prospective cohort study was conducted in Juiz de Fora, Minas Gerais, Brazil, with a sample of 286 twelve-year-old adolescents from public and private schools, selected b...

The aim of the study was to analyze what sociodemographic and economic variables were associated with the presence of untreated caries in 12-year-old children in the city of São Paulo. This cross-sectional study had a complex sample design. It was based on secondary data generated by the Levantamento epidemiológico em saúde bucal (Epidemiological Oral Health Survey) in the city of São Paulo, co...

In the light of the scarcity of epidemiological studies on the oral health of the general population within the context of the Amazon region, this study aimed to estimate the prevalence of dental caries and gingivitis, as well as to evaluate the need for restorative treatment, among school students aged 15 to 19 years in the city of Manaus, AM, Brazil. A cross-sectional study was carried out on...

OBJECTIVES To report, at two and 4 years post-trial, on the potential legacy of a 3-year randomized controlled clinical trial (RCT) of the Caries Management System (CMS) at private general dental practices. The CMS was designed to reduce caries risk and need for restorative care. METHODS Nineteen dental practices located in city, urban, and rural locations in both fluoridated and nonfluoridat...

Aim: to assess prevalence and severity of dental caries (DMFT for permanent dentition dmft primary dentition) among Libyan children. Methods: A cross-sectional observational study including a random sample 372 children was conducted in Benghazi. Experience assessed by decayed, missing, filled teeth DMFT indices using WHO criteria diagnosing caries. The data were entered managed SPSS software ve...