The protective effect of CALD identity in the presence of low income on missing teeth of Australian adults over time.

BACKGROUND: 'Culturally And Linguistically Diverse (CALD)' populations have diverse languages, ethnic backgrounds, societal structures and religions. CALD populations have not experienced the same oral health benefits as non-CALD groups in Australia. However, the socio-demographic profile of Australian CALD populations is changing. This study examined how household income modifies the oral health of CALD and non-CALD adults in Australia. METHODS: Data were from two National Surveys of Adult Oral Health (NSAOH) conducted in 2004-06 (NSAOH 2004-06) and 2017-18 (NSAOH 2017-18). The outcome was self-reported number of missing teeth. CALD status was identified based on English not the primary language spoken at home and country of birth not being Australia. Social disadvantage was defined by total annual household income. Effect-measure modification was used to verify differences on effect sizes per strata of CALD status and household income. The presence of modification was indicated by Relative Excess Risk due to Interactions (RERIs). RESULTS: A total of 14,123 participants took part in NSAOH 2004-06. The proportion identifying as CALD was 11.7% and 56.7% were in the low-income group, and the mean number of missing teeth was 6.9. A total of 15,731 participants took part in NSAOH 2017-18. The proportion identifying as CALD was 18.5% and 38.0% were in the low-income group, and the mean number of missing teeth was 6.2. In multivariable modelling, the mean ratio (MR) for CALD participants with low household income in 2004-06 was 2% lower than the MR among non-CALD participants with high household income, with the RERI being - 0.23. Non-CALD participants from lower income households had a higher risk of having a higher number of missing teeth than low income CALD individuals (MR = 1.66, 95%CI 1.57-1.74 vs. MR = 1.43 95%CI 1.34-1.52, respectively). In 2017-18, the MR for CALD participants with low household income was 3% lower than the MR among non-CALD participants with high household income, with the RERI being - 0.11. Low income CALD participants had a lower risk of missing teeth compared to their non-CALD counterparts (MR = 1.43, 95% CI 1.34-1.52 vs. MR = 1.57, 95% CI 1.50-1.64). CONCLUSIONS: The negative RERI values indicate that the effect-measure modification operates in a negative direction, that is, there is a protective element to being CALD among low income groups with respect to mean number of missing teeth.

Evidence of thickness-dependent surface-induced ferroelectricity in few-layer germanium sulfide obtained via scanning tunneling spectroscopy.

The discovery of ferroelectricity in two-dimensional van der Waals materials has sparked enormous interest from the scientific community, due to its possible applications in next-generation nanoelectronic devices, such as random-access memory devices, digital signal processors, and solar cells, among others. In the present study, we used vapor phase deposition to synthesize ultrathin germanium sulfide nano-flakes on a highly oriented pyrolytic graphite substrate. Nanostructures of variable thicknesses were characterized using scanning tunneling microscopy and spectroscopy. Tunneling currents under forward and backward biases were measured as a function of nano-flake thickness. Remarkably, we clearly observed a hysteresis pattern, which we attributed to surface ferroelectric behavior, consistent with the screening conditions of polarization charges. The effect increases as the number of layers is reduced. This experimental result may be directly applicable to miniaturized memory devices, given the two-dimensional nature of this effect.

From biocolonialism to emancipation: considerations on ethical and culturally respectful omics research with indigenous Australians.

As part of a (bio)colonial project, the biological information of Indigenous Peoples has historically been under scientific scrutiny, with very limited benefits for communities and donors. Negative past experiences have contributed to further exclude Indigenous communities from novel developments in the field of omics research. Over the past decade, new guidelines, reflections, and projects of genetic research with Indigenous Peoples have flourished in Australia, providing opportunities to move the field into a place of respect and ethical relationships. This review explores the ethical and cultural implications of the use of biological samples from Indigenous communities in biomedical research. A structured framework outlining emerging topics of interest for the development of respectful omics research partnerships with Indigenous Australians is presented. This paper highlights aspects related to Indigenous governance, community and individual consent, respectful handling of biological samples, data management, and communication in order to protect Indigenous interests and rights and to promote communities' autonomy.

Oral Health Literacy, Sense of Coherence and Associations With Poor School Performance.

BACKGROUND: This study aimed to investigate the associations of oral health literacy (OHL), sense of coherence (SOC) and other covariates with self-reported school performance (SRSP) in adolescents enrolled in public schools in Brazil. METHODS: This was a cross-sectional study conducted with adolescents aged from 14 to 18 years enrolled in 6 public schools in Piracicaba, São Paulo, Brazil. Researchers carried out data collection at schools using a self-administered structured questionnaire. The dependent variable was SRSP. The explanatory factors included were sociodemographic characteristics, OHL, SOC, self-rated oral health, health behaviors, and experience of bullying. Analyses included simple and multiple logistic regression models. RESULTS: The final sample consisted of 385 adolescents with a mean age of 16 years. Poor school performance was associated (95%CI) with being male, with more than 1 sibling, individual whose last visit to the dentist was due to dental pain, with a lower level of OHL and SOC. CONCLUSIONS: OHL and SOC were important factors associated with SRSP performance together with other sociodemographic and oral health-related variables in high school students. Our findings reinforce the importance of intersectoral actions between the health and education sectors to promote better school performance among adolescents, including actions to improve OHL and SOC.

Multi-conformational monomer and dimer steady-states in domains of a few molecules: the consequences on the phosphorescence emission bands.

Dropcast films of very low concentration domains of phenazine 1,2,3-triazole molecules, blended in a Zeonex matrix, were studied by steady-state fluorescence as a function of temperature. These domains, randomly spread in the volume of the films, presented emission characteristics of singlet and triplet states coming from different molecular conformations. Emissions of singlet monomers, dimers or more complex aggregates, as well two distinct triplet phosphorescent bands, were observed to appear concomitantly or in isolated forms. From the analysis of the experimental results, the additional red-shifted phosphorescent band appeared as a consequence of the formation of dimer and/or more complex aggregated states. The emission characteristics of both phosphorescent bands were classified as coming from ensembles of a few interactive molecules. This statement was assumed based on the absence of replica modes of vibrational spin-orbit interactions.

Impact of oral conditions on the quality of life of incarcerated women in Brazil.

Imprisoned women represent a growing population worldwide with important health needs. In this study, we aimed to analyze the impact of oral health conditions on the quality of life of female inmates in a maximum security correctional facility. Participants were examined and answered the OHIP-14 questionnaire. A total of 305 inmates were included in the study. Prevalence of untreated caries was 84%. Worse quality of life was associated with dental caries, dental pain, deep periodontal pocket, prosthetic use, and age. Sociodental indicators should be incorporated into healthcare and health policies in order to promote wellbeing among this vulnerable population.