Acta odontologica latinoamericana

The negative oral health outcomes of disadvantaged racial groups have been well-documented, as racial disparity in oral health persists over time and in different locations1. However, it is important to note that skin colour has no biological meaning, and the observed differences can be physiological expressions of social injustice such as racism. Aim: The aim of this study was to analyse the association between levels of modern racism (camouflaged prejudice and affirmation of differences) and sociodemographic characteristics of Brazilian dental students. Material and Method: An epidemiological cross-sectional online survey was conducted on 441 Brazilian undergraduate dental students using Google Forms. Participants were recruited via emails and social media, using the snowball technique. The Checklist for Reporting of Survey Studies (CROSS) was followed. The survey used sociodemographic variables, and the Brazilian version of the Modern Racism Scale (B-MRS), which measures the cognitive component of subtle racial attitudes. The scale assesses the central notion of disguised prejudice and has two domains: ‘denial of prejudice’ and ‘affirmation of differences’. Participants’ self-declared skin colour was categorized as “white” and “non-white” (black, brown, indigenous, yellow). Univariate analysis and Poisson regression with robust variance were applied. Results: Participants’ mean age was 24.1 years (±5.4). Most participants were self-declared as white (54%) and 46% as non-white skin colour. Higher B-MRS overall-scores were observed in male (p=0.008) and non-white (p=0.002) students. B-MRS scores for the domain ‘affirmation of differences’ (representation of those who believe that whites and non-whites are truly different) were higher among male dental students (PR=1.138; CI 95%: 1.019–1.271) and those from low-income families (PR=1.306; CI 95%: 1.089–1.565). Scores for the domain ‘denial of prejudice’ (the idea that non-whites use their race to receive legal benefits) were higher among male dental students (PR=1.328; CI 95%: 1.129–1.562). Conclusions: In general, male non-white students had higher modern racism indicators. Male students from low-income families believed that whites and non-whites are truly different, accounting for the affirmation of difference in this sample.

Renata Lamenha-Lins

Saul M Paiva

Flavio F Mattos

Ivana M Prado

João Bastos

Junia M Serra-Negra

Acta odontológica latinoamericana/Acta odontológica latinoamericana

Camouflaged prejudice and the affirmation of skin colour differences: assessment of racism among Brazilian undergraduate dental students

伪装偏见与肤色差异的肯定：巴西本科牙科学生种族主义评估

The concept of quality of life (QoL) developed from early studies on subjective wellbeing and satisfaction with life, interpreted as resulting from living conditions, and recognized by means of objective indicators. Indicators have been developed and validated to measure the relationship between quality of life and health Aim: To determine, during an Educational Social Practice, the association between presence of dental caries lesions and its impact on quality of life of adolescents living in rural and urban areas in Argentina. Materials and Method: This was an observational cross-sectional study in (a) a rural area (Tres Isletas; Chaco Province/Schools No. 601 and 477) and (b) an urban area (Villa Soldati; Buenos Aires City/Nuestra Sra. Fátima School). The sample included 40 students from the urban area (UG) and 30 from the rural area (RG). A calibrated researcher (Kappa 0.80) collected the survey data and performed the clinical examinations. The following were recorded: (a) sociodemographic distribution in terms of age and gender; (b) presence of dental biofilm according to Silness and Löe; caries lesions according to ICDAS II /INTCy criteria, and (d) DMFT, total and per component. Quality of life was assessed using the CPQ 11-14r. Statistical processing included calculation of frequency distribution of the variables (X± DS), and chi-square and Mann-Whitney tests to calculate association and comparisons between groups. Results: The sample included 47 girls (67.1%) and 23 boys (32.9%). Distribution according to sex and age did not differ significantly between sites (UG:12.9 years ± 0.5 and RG:11.8 years ±1.1). No significant difference was found between sites for a) plaque biofilm (p=0.759); b) DMFT, total value and per component, or c) individual and grouped ICDAS scores. Percentage analysis of the CPQr 1-14 scores showed significant differences between groups for questionnaire total scores (26.9% ± 2.2 in UG and 4.1% ± 0.8 in RG) and for the different domains. Conclusion: Perceived impact on quality of life caused by dental caries lesions was significantly higher in urban than the rural group, although neither the dental caries process nor the amount of biofilm differed significantly between groups.

Carlos Fernández

Maria C Pagano

Pablo A Salgado

Angela B Argentieri

Aldo F Squassi

Noemí E Bordoni

Dental caries lesions and impact on quality of life in adolescents living in urban and rural areas.A case study

城市和农村地区青少年龋齿病变及其对生活质量的影响：一项案例研究

The color and the surface roughness of aesthetic restorations are related to the clinical sucess and longevity of these treatments. Aim: This study evaluated the influence of finishing and polishing systems, and storage media on the surface roughness and color stability of aesthetic restorative composites. Materials and Method: Cylindrical specimens (n=10) were prepared and treated according to: 1. Type of composite resin (nanofilled- Filtek Z350XT, suprananofilled- Estelite Omega, nanohybrid- Empress Direct); 2. Type of finishing and polishing systems (no polishing, aluminum oxide discs or abrasive rubber polishers); and 3. Type of immersion medium (water or coffee, 3 h/day/30 days). Surface roughness (Ra - μm) and color stability (L, ∆Eab, and ∆E00) were evaluated at baseline (after polishing) and final time (after immersion). Data were subjected to Kruskal-Wallis, Mann-Whitney, Wilcoxon, and Student- Newman-Keuls tests (α=0.05). Results: Nanohybrid (p&lt;0.001) and suprananofilled composite resins (p=0.004) showed an increase in Ra after polishing, regardless the finishing and polishing system. After immersion in coffee, the nanofilled composite had the highest roughness values (p=0.032). L values increased for all resins after polishing (p&lt;0.05). Suprananofilled composites had the greatest color stability with the lowest values of ∆Eab and ∆E00. Conclusions: Finishing and polishing systems had an impact on the surface roughness and color stability of all aesthetic resins, and their effectiveness depended on the type of composite resin.

Ana C Ferreira Alvarenga

Kamila R Kantovitz

Cecília P Turssi

Roberta T Basting1

Waldemir F Vieira-Junior

Fabiana MG França

Effect of finishing and polishing systems on surface roughness and color stability of aesthetic restorations exposed to staining solution.

涂层和抛光系统对暴露于染色溶液的美学修复体表面粗糙度和颜色稳定性的影响。

Giomers are bioactive hybrid restorative materials consisting of composite resin and glass ionomer filler pre-reacted on the surface, which maintain acceptable clinical qualities over time. One of the main factors that explains this is the surface hardness that is achieved by inhibiting the oxygen layer. Aim: To compare the effect of blue and conventional Mylar strips used as oxygen inhibiting agents on the surface microhardness of giomer restorative materials. Materials and Method: A total 96 giomer specimens were prepared in disc-shaped molds 2 mm tall x 5 mm in diameter (ISO 4049: 2019-05). The specimens were grouped according to type of giomer: Beautifil II (BII) or Beautifil II LS (BIILS), and according to the type of Mylar strip: conventional, blue, or control group without strip. They were subsequently subjected to the Knoop (KHN) microhardness test. The database was analyzed with Stata SE v18 statistical software, and two-way ANOVA was performed. Results: Interaction was found between the type of giomer and Mylar strip (p=0.039). Significant differences were found between surface microhardness values according to the type of giomer (0.001) and the type of Mylar strip (0.001). Beautifil II LS presented significant differences between conventional Mylar strip vs. without Mylar strip (43.58 ± 1.65 vs. 40.44 ± 2.12) and between blue Mylar strip and without Mylar strip (44.69 ± 1.75 vs. 40.44 ± 2.12). In the Bonferroni Post hoc test, a significant difference was found between Conventional Mylar Strip and without Mylar Strip (p=0.001) and Blue Mylar Strip and without Mylar Strip (p=0.001). Conclusion: The use of blue and conventional Mylar strips inhibits the oxygen layer on the Beautifil II and Beautifil II LS giomers, endowing them with high values of surface microhardness.

Diana J De La Cruz

Melvin Cisneros-del Águila

Effect of two oxygen-inhibiting agents on the surface microhardness of giomer restorative materials

两种氧抑制剂对吉默尔修复材料表面显微硬度的影响

Dengue is a global public health problem, especially in countries with tropical and subtropical climates. Aim: To describe the oral manifestations, present during dengue infection. Materials and method: A qualitative systematic review was conducted in OSF Registries. The search was conducted in PubMed, Scielo and Scopus, from June 15 to July 18, 2023, using MeSH term equations with Boolean operators. A total 299 articles were analyzed in three stages, leaving 8 studies for review. RAYYAN was used for selection and tables for study analysis. Studies were assessed under two criteria: metadata, and intraoral and extraoral manifestations of dengue. Results: The review included 8 studies, published in 2012, 2013, 2014, 2019, 2020 and 2021. The studies reported hemorrhagic dengue and type 1 dengue as diagnoses. They recorded presence of hemorrhagic and edematous gums, maculopapular lesions in the mucosa of the lower lip with pain and dysphagia, Pseudomembranous candidiasis, and edematous and erythematous taste buds. Conclusions: Reports of oral manifestations of dengue are deficient, and further research is required to enable correct diagnosis and differentiation from other pathologies.

ISSN	0326-4815, 1852-4834
h-index	22

Publication Information	Publisher: Acta Odontologica Latinoamericana，Publishing cycle: ，Journal Type: journal，Open Access Journals: No
Basic data	Year of publication: 2019，Proportion of original research papers: ，Self Citation Rate:， Gold OA Rate:

Acta odontologica latinoamericana

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Camouflaged prejudice and the affirmation of skin colour differences: assessment of racism among Brazilian undergraduate dental students

Dental caries lesions and impact on quality of life in adolescents living in urban and rural areas.A case study

Effect of finishing and polishing systems on surface roughness and color stability of aesthetic restorations exposed to staining solution.

Effect of two oxygen-inhibiting agents on the surface microhardness of giomer restorative materials

Oral manifestations during dengue infection: a systematic review

Camouflaged prejudice and the affirmation of skin colour differences: assessment of racism among Brazilian undergraduate dental students

Dental caries lesions and impact on quality of life in adolescents living in urban and rural areas.A case study

Effect of finishing and polishing systems on surface roughness and color stability of aesthetic restorations exposed to staining solution.

Effect of two oxygen-inhibiting agents on the surface microhardness of giomer restorative materials

Oral manifestations during dengue infection: a systematic review