Resin-modified glass ionomer cement (RMGIC) has important properties. However, like other restorative materials, it has limitations such as decreased biocompatibility. The incorporation of nanoparticles (NP) in the RMGIC resulted in improvements in some of its properties. The aim of this study was to evaluate the physical-biological properties of RMGIC with the addition of nanohydroxyapatite (HANP). Material and Methods: Vitremer RMGIC was used, incorporating HANP by amalgamator, vortex and manual techniques, totaling ten experimental groups. The distribution and dispersion of the HANP were evaluated qualitatively by field emission scanning electron microscope (SEM-FEG). The evaluation of image porosity (SEM-FEG) with the help of imageJ. Cell viability 3-(4,5-dimethylthiazol-2yl)-2,5-diphenyl tetrazoline bromide (MTT) and cell morphology analyses were performed on MDPC-23 odontoblastoid cells at 24 and 72 h. Results: It was possible to observe good dispersion and distribution of HANP in the samples in all experimental groups. The incorporation of 5% HANP into the vortex stirred RMGIC resulted in fewer pores. The increase in the concentration of HANP was directly proportional to the decrease in cytotoxicity. Conclusions: It is concluded that the use of a vortex with the incorporation of 5% HANP is the most appropriate mixing technique when considering the smallest number of pores inside the material. A higher concentration of HANP resulted in better cell viability, suggesting that this association is promising for future studies of new restorative materials.

This study investigated the impact of home care, health status, and cognition. A qualitative and quantitative approach was employed through a cross-sectional study with a sample of 60 elderly individuals in need of home care in the municipality of Itatiba, São Paulo, Brazil. The analysis utilized the Discourse of the Collective Subject (DCS), EQ-5D, EQ VAS, and Mini-Mental State Examination (MMSE). The sample consisted of 40.0% male and 60.0% female individuals. The majority (61.6%) received weekly visits, mainly from community health agents, who were responsible for the majority of the care (45%). Positive considerations were highlighted, with 36.6% emphasizing the contribution to treatment continuity. The EQ VAS assessment indicated a moderately good perception of health. The EQ-5D analysis revealed significant differences between genders in personal care (p = 0.04). There were significant differences between clinical characteristics and EQ-5D dimensions, such as neoplasia and reduced mobility (p = 0.04), and arthritis/osteoarthritis/rheumatism and a limitation in common activities (p = 0.01). The presence of anxiety/depression was significant in cases of neoplasia (p = 0.006), arthritis/osteoarthritis/rheumatism (p = 0.01), and stroke (p = 0.04). The logistic regression analysis showed associations between usual activities and arthritis, osteoarthritis, rheumatism (p = 0.034), pain/malaise and arthritis, osteoarthritis, rheumatism (p = 0.038), and anxiety/depression and stroke (p= 0.028). The average MMSE scores (17.52) suggested a mild cognitive impairment, with no statistical differences between genders. Based on these results, it can be concluded that home care can provide a comprehensive approach and continuous assistance, emphasizing the importance of personalized care based on perceived and clinical differences.

Currently, oral health issues are increasingly been addressed and virtual reality (VR) is being used as an aid in health areas. However, there is little evidence of VR being used in preventing oral health problems. To evaluate the effectiveness of VR in oral hygiene education. Three hundred pupils, aged between 9 and 12 years, received instructions in oral hygiene by immersion VR and they gave their opinions about the performed activities. Chi-square and Fisher's exact tests were applied, with a significance level of 5%. Part perception of oral hygiene showed no statistically significant difference (P>0.550). There was an increase in the use of dental floss (P<0.001), tongue brushing (P<0.001), and tooth brushing (P<0.001). Both drawings and comments made by participants related to oral hygiene were positive regarding the project. Conclusions: The use of VR in oral hygiene instruction was effective. Most participants increased brushing and flossing frequency and produced drawings related to oral hygiene. VR is effective and should be used in dentistry for teaching and prevention , especially with children, as it presents an interactive instructional space that can be approached in a playful way. This study presents dentists with a promising alternative for changing oral hygiene habits.

The aim of this study were characterize acellular collagen matrices derived from porcine pericardium (PP) and to evaluate their properties after sterilization by ethylene oxide and gamma ray. PP matrices were subjected to alkaline hydrolysis (AH), and samples were characterized for biological stability, membrane thickness measurements, differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). Subsequently, the matrices were frozen, lyophilized and sterilized by ethylene oxide or gamma radiation. For in vitro assays, CHO-K1 cell culture was used and evaluated for cytotoxicity, clonogenic survival assay, genotoxicity and mutagenicity. Analysis of variance (ANOVA) was used, followed by Dunnett’s post-test, with a significance level of 5%. After AH, there was no significant change in matrix thickness. The relative biodegradability of the material after implantation was observed. Morphology and dimensions had small changes after AH. As for cell viability, none of the tested matrices showed a statistically significant difference (p > 0.05; Dunnett) regardless of the sterilization method. Furthermore, it was found that PP matrices did not interfere with the proliferation capacity of CHO-K1 cells (p > 0.05; Dunnett). As for genotoxicity, when sterilized with ethylene oxide (NP, P12 and P24), it showed genotoxic potential, but it was not genotoxic when sterilized by gamma radiation. No mutagenic effects were observed in either group. PP-derived collagen matrices hydrolyzed at different times were not cytotoxic. It is concluded that the best method of sterilization is through gamma radiation, since no significant changes were observed in the properties of the PP matrices.

Devido à sua abordagem qualiquantitativa, o Discurso do Sujeito Coletivo (DSC) destaca-se como uma metodologia de grande importância em pesquisas voltadas para a saúde pública, permitindo análises abrangentes, tanto qualitativa quanto quantitativa com base nos dados coletados. O propósito deste artigo é apresentar a fundamentação teórica e a aplicabilidade do DSC para o desenvolvimento e a análise de pesquisas qualitativas. No texto, discutem-se os conceitos de discurso e análise, estabelecendo relação com a metodologia de análise do DSC. A utilização dessa metodologia revela-se de maneira apropriada através de dados qualitativos, fundamenta-se na Teoria da Representação Social, que têm a capacidade de revelar pensamentos, representações, valores e crenças de uma coletividade sobre um tema específico, empregando métodos científicos. Acreditamos que este estudo convida o leitor para a reflexão metodológica do DSC, apresentando relevância como instrumento ou ferramenta prática no contexto das pesquisas qualitativas.

Virtual reality (VR) allows its application in different fields, such as healthcare. In dentistry, this technology has enormous potential, in the educational and clinical scope. Its applications are of increasing interest and importance in dentistry, especially in teaching, as it offers interactivity and high effectiveness in learning. In the treatment of phobia to dental treatments, this technology is also promising, since it shows satisfactory results and in the surgical area it has a high potential for complex treatments, allowing predictable and safe results. However, future studies should focus on establishing technological standards with high data quality and on the development of approved applications for the clinical routine. Thus, the objective of this literature review was to provide clarification on the knowledge and scientific development of VR in dentistry.