RESUMO Diversas patologias conduzem frequentemente a divergências quanto à sua identificação na prática clínica, nomeadamente no contexto das patologias orais. Os dados obtidos durante a anamnese e o exame físico frequentemente necessitam de revisão para o diagnóstico. Objetivo: O presente estudo teve como objetivo avaliar a concordância entre os diagnósticos clínicos e histopatológicos e relatar a frequência de preenchimento de formulários de espécimes submetidos ao exame histopatológico, examinados retrospectivamente. Métodos: Dados de 93.950 espécimes submetidos para exame histopatológico foram obtidos de prontuários médicos. Resultados: Foram incluídos 5.052 laudos de pacientes de 0 a 14 anos. A concordância foi definida a partir da categorização da natureza da lesão de acordo com sua categoria diagnóstica. A maior taxa de concordância foi observada para mucocele e papiloma (86%), seguido por granuloma piogênico (60%). Baixas taxas de confirmação histopatológica de impressões clínicas foram observadas para hemangioma (17,5%) e lesão periférica de células gigantes (35%). Entre as lesões relacionadas aos tecidos dentários, o odontoma apresentou maior concordância (84%), seguido pelo ceratocisto (74%), enquanto o cisto radicular apresentou maior discordância (21%). Conclusão: Este estudo encontrou nível de concordância aceitável para as lesões mais frequentes. No entanto, compreender as características das lesões orais em crianças e suas correlações clinicopatológicas é crucial para proporcionar o tratamento ideal em cada caso. clínica diagnóstico Objetivo retrospectivamente Métodos 93950 93 950 93.95 médicos Resultados 5052 5 052 5.05 1 anos diagnóstica 86%, 86 86% , (86%) 60%. 60 60% . (60%) 17,5% 175 17 (17,5% 35%. 35 35% (35%) dentários 84%, 84 84% (84%) 74%, 74 74% (74%) 21%. 21 21% (21%) Conclusão frequentes entanto caso 9395 9 95 93.9 505 05 5.0 8 (86% 6 (60% 17,5 (17,5 3 (35% (84% 7 (74% 2 (21% 939 93. 50 5. (86 (60 17, (17, (35 (84 (74 (21 (8 (6 (17 (3 (7 (2 ( (1

ABSTRACT Several pathologies often lead to disagreements regarding their identification in clinical practice, particularly in the context of oral pathologies. The data obtained during anamnesis and physical examination frequently require revision to reach a diagnosis. Objective: The present study aimed to evaluate the agreement between clinical and histopathological diagnoses and report the frequency of completing forms for specimens submitted to histopathological examination, examined retrospectively. Methods: Data on 93,950 specimens submitted for histopathological examination were retrieved from medical records. Results: A total of 5,052 reports from patients aged 0 to 14 years were included. Agreement was defined based on categorizing the nature of the injury according to its diagnostic category. The highest agreement rate was observed for mucocele and papilloma (86%), followed by pyogenic granuloma (60%). Low rates of histopathological confirmation of clinical impressions were observed for hemangioma (17.5%) and peripheral giant cell lesion (35%). Among lesions related to dental tissues, odontoma showed the highest agreement (84%), followed by keratocyst (74%), while radicular cyst showed the most discordance (21%). Conclusion: This study found an acceptable level of agreement for the most frequent injuries. However, understanding the characteristics of oral lesions in children and their clinicopathological correlations is crucial for providing optimal treatment in each case. practice diagnosis Objective retrospectively Methods 93950 93 950 93,95 records Results 5052 5 052 5,05 1 included category 86%, 86 86% , (86%) 60%. 60 60% . (60%) 17.5% 175 17 (17.5% 35%. 35 35% (35%) tissues 84%, 84 84% (84%) 74%, 74 74% (74%) 21%. 21 21% (21%) Conclusion injuries However case 9395 9 95 93,9 505 05 5,0 8 (86% 6 (60% 17.5 (17.5 3 (35% (84% 7 (74% 2 (21% 939 93, 50 5, (86 (60 17. (17. (35 (84 (74 (21 (8 (6 (17 (3 (7 (2 ( (1

Abstract Policy evaluation and guidance on fluoride use and sugar consumption in Latin American and Caribbean countries (LACC) may provide a scientific evidence basis for policymakers, dental professionals, civil society organizations and individuals committed to improving public oral health. A cross-sectional study was conducted to evaluate the extent of implementation of policies/guidelines on fluoride use, and sugar consumption in LACC. The study had two stages. First a questionnaire covering four major areas was developed: fluoridation of public water supplies; salt fluoridation; fluoride dentifrices, and sugar consumption. Then, the questionnaire was applied to collect data among representative participants in public oral health from LACC. Ninety-six participants from 18 LACC answered the questionnaire. One-hundred seventy documents were attached, and 285 links of websites were provided by the respondents. Implementation of policies and guidelines on water and table salt fluoridation and processed and ultra-processed food consumption were found in most countries, with some issues in the consensus and coverage. Thus, differences were identified in the extent of implementation of public oral health strategies on sugar consumption and fluoridation among the countries. There is no consensus on the policies in LACC to reduce sugar consumption and for the use of fluoride. A few policies and guidelines were applied in isolated countries, with a variety of strategies and standards. For future actions, it will be important to encourage the development of strategies and public policies within countries, and to evaluate the effectiveness of existing policies in reducing dental caries and in improving oral health in LACC. (LACC policymakers professionals crosssectional cross sectional policiesguidelines stages developed supplies dentifrices Then Ninetysix Ninety six 1 Onehundred One hundred attached 28 respondents ultraprocessed ultra coverage Thus standards actions 2

Abstract The aim of this paper was to present a summary of the process of developing and preparing the final documents of the national consensus for teaching undergraduate Brazilian dental students the dental caries curriculum in the Portuguese language. The final document was developed in three steps: a) The ABENO and LAOHA cariology group invited experts from all five regions of Brazil to participate in the discussion. The theoretical support for crafting the first draft of the consensus was based on two publications: National Curriculum Guidelines of the Dentistry graduation in Brazil, Ministry of Education (2021) and the competences described in the European Core Curriculum for Cariology (ORCA-ADEE, 2011); b) The group of experts was divided into 5 working groups: G1-Domain, Main and Specific Competences, G2-Essential knowledge, G3-Life course perspective, G4-Social determinants and dental caries, G5- Glossary. The document was finalized by thoroughly reviewing the process using Delphi methodology; c) The 5-chapter document (one from each working group) was submitted to three open public consultations in 2022 (May-June, August, and October) using Google-forms. The suggestions (content/wording) were discussed within the group as: totally accepted, partially accepted, and rejected. A total of 192 suggestions were registered from 31 dental schools in all regions of Brazil. The number of suggestions received per Group were: 84, 28, 26, 24, 30 suggestions for G1, G2, G3, G4 and G5, respectively. The majority of suggestions were totally accepted by the group of experts (n = 172, 89.6%), 15 were partially accepted (7.8%), and 5 were rejected. Conclusion The final document could be considered to be the first national consensus for teaching the dental caries curriculum in Brazil. language steps discussion publications 2021 (2021 ORCAADEE, ORCAADEE ORCA ADEE, ADEE (ORCA-ADEE 2011 2011) b groups G1Domain, G1Domain GDomain G1 Domain, Domain G G1-Domain Competences G2Essential GEssential G2 Essential knowledge G3Life GLife G3 Life perspective G4Social GSocial Social G5 Glossary methodology c 5chapter chapter one 202 MayJune, MayJune May June, June (May-June August October Googleforms. Googleforms Google forms. forms Google-forms content/wording contentwording content wording (content/wording as rejected 19 3 84 28 26 24 respectively n 172 89.6%, 896 89.6% , 89 6 89.6%) 1 7.8%, 78 7.8% 7 8 (7.8%) (202 201 20 2 17 89.6 7.8 (7.8% (20 89. 7. (7.8 (2 (7. ( (7

Abstract Oral health personnel must acknowledge the health needs of sexual and gender minorities. They should consult scientific literature to deepen their knowledge about sexuality, gender identity, general and oral health status, and treatment disparities among LGBTQIA+ people. The aim of this scoping review was to portray the development and current stage of internationally indexed literature approaching the oral health of this population. In this study, the search strategy used consisted of combinations of subject descriptors (MeSH terms), in two concept blocks: LGBTQIAP+ people and oral health. Global literature was searched through Medline (PUBMED), Web of Science, Embase, Lilacs, and Scopus electronic databases, with no language or date restrictions. Records were selected and evaluated by two independent reviewers, under the supervision of three senior reviewers and the inclusion criteria resulted in 189 eligible papers. Since the first study was published in 1974, numbers increased over the decades, reaching 67 (35.4%) in 2010-2019. The most frequently studied populations were North American (42.9%) and European (19.0%) and the most frequent language of publication was English (99.0%). There were 38 open access papers (20.1%). Medical (57.7%) and dental journals (20.1%) predominated. Cross-sectional studies were found more frequently (65.1%), followed by the cohort type (11.1%). Oral manifestation of STI (58.7%) was the topic most frequently addressed. The search for literature approaching the oral health of LGBTQIAP+ people showed evidence of the need to encourage research reported in papers made easily available, with more robust scientific evidence, and on a broader scope of topics, including oral health needs and treatment, and planning of oral health services. minorities sexuality identity status LGBTQIA population MeSH terms, terms , terms) blocks LGBTQIAP PUBMED, PUBMED (PUBMED) Science Embase Lilacs databases restrictions 18 1974 decades 6 35.4% 354 35 4 (35.4% 20102019. 20102019 2010 2019. 2019 2010-2019 42.9% 429 42 9 (42.9% 19.0% 190 19 0 (19.0% 99.0%. 990 99.0% . 99 (99.0%) 3 20.1%. 201 20.1% 20 1 57.7% 577 57 7 (57.7% (20.1% predominated Crosssectional Cross sectional 65.1%, 651 65.1% 65 (65.1%) 11.1%. 111 11.1% 11 (11.1%) 58.7% 587 58 (58.7% addressed available topics services (PUBMED 197 35.4 (35.4 2010201 2010-201 42.9 (42.9 19.0 (19.0 99.0 (99.0% 20.1 2 57.7 5 (57.7 (20.1 65.1 (65.1% 11.1 (11.1% 58.7 (58.7 35. (35. 201020 2010-20 42. (42. 19. (19. 99. (99.0 20. 57. (57. (20. 65. (65.1 11. (11.1 58. (58. (35 20102 2010-2 (42 (19 (99. (57 (20 (65. (11. (58 (3 2010- (4 (1 (99 (5 (2 (65 (11 ( (9 (6

RESUMO Objetivo: Identificar características bucais em crianças hepatopatas em programação para o transplante hepático. Fontes de dados: A metodologia foi descrita de acordo com o PRISMA-ScR. Adotamos a estrutura metodológica e recomendações para este tipo de revisão por Arksey e O’Malley e o Instituto Joanna Briggs. O protocolo foi registrado no Open Science Framework (https://doi.org/10.17605/OSF.IO/QCU4W). Uma pesquisa sistemática (Medline/PubMed, Scopus, Web of Science e ProQuest) foi conduzida para identificar estudos que preenchessem os critérios de inclusão: revisões sistemáticas; ensaios clínicos prospectivos (desenhos de grupos paralelos ou cruzados); estudos observacionais (coorte, caso-controle e estudos transversais); séries de casos clínicos; e relatos de casos que avaliam crianças com doenças hepáticas em preparação para o transplante. A última busca foi conduzida em julho de 2021, e não foram impostas restrições quanto ao idioma ou ano de publicação. Foram excluídos estudos que apresentavam dados mistos com avaliação pós-transplante e estudos que avaliavam não só o transplante de fígado, mas também de outros órgãos sólidos. O rastreio, inclusão e extração de dados foram realizados por dois revisores independentemente. Foi conduzida uma síntese narrativa para identificar os resultados do estudo. Síntese dos dados: A pesquisa bibliográfica identificou 830 referências. Foram lidos 21 artigos na íntegra após avaliação dos critérios de inclusão. Finalmente, após a avaliação dos critérios de exclusão, apenas três estudos foram considerados para análise. Conclusões Crianças com doença hepática em preparação para o transplante podem apresentar defeitos de esmalte, pigmentação dentária, cárie, gengivite além de infecções oportunistas como a candidíase. Objetivo hepático PRISMAScR. PRISMAScR PRISMA ScR. ScR PRISMA-ScR OMalley Malley Briggs https//doi.org/10.17605/OSF.IO/QCU4W. httpsdoiorg1017605OSFIOQCU4W httpsdoiorgOSFIOQCUW https //doi.org/10.17605/OSF.IO/QCU4W . doi org 10 17605 OSF IO QCU4W QCU W (https://doi.org/10.17605/OSF.IO/QCU4W) Medline/PubMed, MedlinePubMed Medline PubMed (Medline/PubMed Scopus ProQuest sistemáticas desenhos cruzados cruzados) coorte, coorte (coorte casocontrole caso controle transversais transversais) 2021 publicação póstransplante pós fígado sólidos rastreio independentemente estudo 83 referências 2 Finalmente exclusão análise esmalte dentária cárie candidíase https//doi.org/10.17605/OSF.IO/QCU4W httpsdoiorg OSFIOQCU doiorg1017605OSFIOQCU4W doiorgOSFIOQCUW 1 1760 QCUW (https://doi.org/10.17605/OSF.IO/QCU4W Medline/PubMed 202 8 doiorg 176 20 17

Abstract Objective: To identify oral characteristics found in children with liver disease in programming for liver transplantation. Data source: The methodology was written according to PRISMA-ScR. We adopted the methodological framework and recommendations for this type of review by Arksey and O’Malley and the Joanna Briggs Institute. The protocol was registered in the Open Science Framework (https://doi.org/10.17605/OSF.IO/QCU4W). A systematic search (Medline/PubMed, Scopus, Web of Science, and ProQuest) was conducted to identify studies that met the inclusion criteria: systematic reviews; prospective clinical trials (parallel or crossover group designs); observational studies (cohort, case-control, and cross-sectional studies); clinical case series; and case reports evaluating children with liver disease in preparation for transplantation. The last search was conducted in July 2021, and no restrictions were imposed as to language or year of publication. Studies presenting mixed data with post-transplant evaluation, and studies evaluating not only liver transplantation but also other solid organs were excluded. Screening, inclusion, and data extraction were performed by two reviewers independently. A narrative synthesis was conducted to describe the findings of the study. Data synthesis: The bibliographic search identified 830 references. A total of 21 articles were read in their entirety after the inclusion criteria assessment. Finally, after evaluating the exclusion criteria, only 3 studies were considered for the qualitative analysis. Conclusions: Children with liver disease in preparation for transplantation may present enamel defects, tooth pigmentation, caries, gingivitis, and opportunistic infections such as candidiasis. Objective source PRISMAScR. PRISMAScR PRISMA ScR. ScR PRISMA-ScR OMalley O Malley Institute https//doi.org/10.17605/OSF.IO/QCU4W. httpsdoiorg1017605OSFIOQCU4W httpsdoiorgOSFIOQCUW https //doi.org/10.17605/OSF.IO/QCU4W . doi org 10 17605 OSF IO QCU4W QCU W (https://doi.org/10.17605/OSF.IO/QCU4W) Medline/PubMed, MedlinePubMed Medline PubMed (Medline/PubMed Scopus ProQuest reviews parallel designs designs) cohort, cohort (cohort casecontrol, casecontrol control, control case-control crosssectional cross sectional studies) series 2021 publication posttransplant post transplant evaluation excluded Screening independently study 83 references 2 assessment Finally analysis Conclusions defects pigmentation caries gingivitis candidiasis https//doi.org/10.17605/OSF.IO/QCU4W httpsdoiorg OSFIOQCU doiorg1017605OSFIOQCU4W doiorgOSFIOQCUW 1 1760 QCUW (https://doi.org/10.17605/OSF.IO/QCU4W Medline/PubMed 202 8 doiorg 176 20 17

Resumo Introdução A relação entre aparência dentária e bem-estar emocional/social em áreas carentes com urbanização acelerada é desconhecida. Objetivo Avaliar se o bem-estar emocional e social de adolescentes residentes em área urbana pode ser mais impactado pela aparência dentária desfavorável controlada pelas condições bucais. Método Um estudo exploratório transversal de base populacional envolvendo escolares brasileiros de 12 anos foi realizado em dois bairros carentes foi realizado, na cidade de São Paulo, Brasil. O desfecho foi a gravidade da qualidade de vida relacionada à saúde bucal (QVRSB) devido ao bem-estar emocional e social, e as exposições foram condições bucais e distrito de residência (rural e urbano). Resultados O impacto sobre a gravidade da QVRSB em decorrência do bem-estar emocional e do bem-estar social, respectivamente, foi 14% e 16% maior para aqueles que apresentavam pelo menos um dente cariado não tratado; 36% e 54% maior para aqueles com aparência dentária desfavorável e 25% e 39% maior para aqueles moradores em distrito urbano. Nenhuma associação entre má oclusão e distrito foi observada. Conclusão Apesar da maior prevalência de cárie dentária não tratada no distrito rural, os adolescentes do distrito urbano sentiram-se mais afetados negativamente em sua qualidade de vida relacionada à saúde bucal ajustada pelas condições bucais, sugerindo que as possíveis influências do ambiente urbano podem trazer experiências sociais estressantes devido à aparência dentária impactando no bem-estar emocional e social. bemestar bem estar emocionalsocial desconhecida 1 Paulo Brasil (QVRSB rural . urbano) respectivamente 14 16 tratado 36 54 25 39 observada sentiramse sentiram 3 5 2

Abstract Background The relationship between dental appearance and emotional/social well-being in underprivileged areas undergoing rapid urbanization is unknown. Objective To assess if the emotional and social well-being of teenagers living in urban areas might be more affected by unfavorable dental appearance determined by oral conditions. Method A population-based cross-sectional exploratory study with 12-year-old Brazilian schoolchildren was carried out in two poor, underserviced districts of Sao Paulo City, Brazil. Outcome was severity of oral health-related quality of life (QHRQoL) due to the emotional and social well-being and exposures were oral conditions and residence district (rural or urban). Results The impact on severity of QHRQoL due to emotional well-being and due to social well-being, respectively, were 14% and 16% higher for those presenting at least one untreated decayed tooth; 36% and 54% higher for those with unfavorable dental appearance and 25% and 39% higher for those from the urban district. No association between malocclusion and district was observed. Conclusion Despite higher prevalence of untreated dental caries in the rural district, teenagers from the urban district felt that their OHRQoL, adjusted by oral conditions investigated, was more negatively affected. This suggests that urban environmental influences can lead to stressful social pressures stemming from dental appearance, leading to diminished emotional and social well-being. emotionalsocial wellbeing well being unknown populationbased population based crosssectional cross sectional 12yearold yearold 12 year old poor City Brazil healthrelated health related (QHRQoL urban. . urban) wellbeing, being, respectively 14 16 tooth 36 54 25 39 observed OHRQoL investigated wellbeing. being. 1 3 5 2

Abstract This cross-sectional study aimed to verify the influence of parental behavior on the development of dental caries in children by assessing parents’ behavior during their children’s meals and their parental level of oral health literacy. This study was conducted with children aged 2 to 4 in Diadema, São Paulo, Brazil. Six hundred and thirty children were examined to assess the prevalence of dental caries (dmft index). Parents answered a questionnaire related to socio-demographic conditions, oral health literacy (OHL), and the parents’ behavior during the meal - Parent Mealtime Action Scale - (PMAS). The analysis fitted zero-inflated negative binomial regression (ZINB) models to assess unadjusted and adjusted associations between the study outcome and covariates. In the unadjusted analysis, the child’s age, the number of siblings, household crowding, family income, socioeconomic status and OHL were associated with the outcome (p <0.05). In the adjusted model, dental caries was more prevalent among 3- (PR: 1.85, 95%CI: 1.19–2.87) and 4-year-old children (PR: 2.43, 95%CI: 1.60–3.71), those with at least one sibling (PR: 1.66, 95%CI:1.18–2.33). Poor children were more likely to have dental caries (PR: 0.66, 95%CI: 0.48–0.91); the Use of Rewards dimension of the PMAS was associated positively with dental caries severity (RR: 0.90, 95%CI: 0.84–0.97). Although OHL was not associated with caries, parents’ mealtime behaviors were related to dental caries. This suggested that communication between parents and children related to good eating practices could play a protective role against dental caries in children.

Abstract This review aimed to describe the importance of the first 1000 days of a child’s life as a golden period for interventions and actions to prevent dental caries and other chronic non-communicable diseases (NCDs) throughout the life course and highlight that the first 450 days of life could be even more important for oral health. During the first 1000 days of life (pregnancy and first two years of life), health care providers can identify unhealthy lifestyles, behaviors, and their determinants. Bearing in mind contextual factors like socioeconomic conditions and cultural aspects, this is a unique period to work together with the family and identify opportunities for adopting healthy habits that might last throughout the life of the expected or newborn child. This is a “window of opportunity” for the prevention of chronic NCDs of both systemic and oral origin, such as overweight, obesity, diabetes, cardiovascular diseases, and dental caries. In fact, to effectively prevent dental caries, pregnancy and the first 6 months of a child’s life (first 450 days) should be considered the critical period to work together with families to facilitate the adoption of healthy habits. Knowledge about the first thousand days of life is essential and represents a crucial period for the implementation of actions and interventions that will guarantee good oral and general health development that can persist throughout life.

Abstract Dental caries can be effectively managed and prevented from developing into cavitated lesions while preserving tooth structure at all levels. However, the strong correlation between caries and socioeconomic factors may compromise the efficacy of preventive strategies. The high prevalence of persistent inequalities in dental caries in Latin American and Caribbean countries (LACC) is a matter of concern. The estimates of the burden of disease in some countries in this region are outdated or absent. This paper aims to summarize and present the final recommendations of a regional Consensus for Dental Caries Prevalence, Prospects, and Challenges for LACC. This consensus is based on four articles that were written by a team of Latin American experts, reviewed by dental associations, and presented and discussed in two consensus events. The following domains were explored: epidemiology, risk factors, prevention strategies, and management of dental caries with a focus on restorative procedures. Dental caries can manifest throughout the lifespan of an individual, making it a matter of concern for infants, children, adults, and older people alike. The prevalence rates of untreated caries in deciduous and permanent teeth are high in many parts of the world, including LACCs. Previous evidence suggests that the prevalence of dental caries in 12-year-olds is moderate to high in most Latin American countries. Moreover, the prevalence of treatment needs and dental caries in the adult and elderly population can also be regarded as high in this region. The risk/protective factors (e.g., sugar consumption, exposure to fluoride, and oral hygiene) probably operate similarly in all LACCs, although variations in the interplay of these factors in some countries and within the same country cannot be ruled out. Although salt and water fluoridation programs are implemented in many countries, there is a need for implementation of a surveillance policy. There is also room for improvement with regard to the introduction of minimal intervention techniques in practice and public health programs. Dental caries is a marker of social disadvantage, and oral health promotion programs and interventions aimed at reducing the burden of dental caries in LACCs must consider the complexity of the socioeconomic dynamics in this region. There is an urgent need to promote engagement of stakeholders, policymakers, medical personnel, universities, dental associations, community members, and industries to develop regional plans that enhance the oral health agenda for LACCs. A list of recommendations has been presented to underpin strategies aimed at reducing the prevalence and severity of dental caries and improving the quality of life of the impacted LACC population in the near future.

RESUMO Objetivo: Analisar a expressão do marcador de células-tronco STRO-1 e o marcador relacionado à diferenciação da Hsp25 e ao desenvolvimento dental durante a odontogênese em ratos. Métodos: Embriões de ratos Wistar de dezoito dias e animais de sete dias de idade foram analisados morfologicamente através da coloração com Hematoxilina e Eosina (HE) e através de marcação imuno-histoquímica para STRO-1 e Hsp25 em seções seriais de 5uM. Resultados: Na análise morfológica da HE em embriões de 18 dias, o estágio de desenvolvimento dos dentes estava na fase capuz, enquanto nos animais de 7 dias estava na fase de campânula. Conclusão: Nos embriões, a expressão de STRO-1 não foi encontrada na região da papila dentária ou no órgão do esmalte; no entanto, nos animais de sete dias de idade, células positivas para STRO-1 estava presente na região do folículo e papila dentária. Quanto ao Hsp25, este apresentou fraca marcação na fase capuz, enquanto na fase campânula houve reação, principalmente nos odontoblastos. As expressões no local desses marcadores variam de acordo com o estágio do desenvolvimento dentário.

ABSTRACT Objective: Therefore, the purpose of the currently study was to analyze the expression of the STRO-1 stem cell marker and the marker related to Hsp25 differentiation and dental development during odontogenesis in rats. Methods: Eighteen-day Wistar rat embryos and 7-day-old animals were analyzed morphologically via Hematoxylin and Eosin (HE) staining and via immunohistochemical marking for Stro-1 and Hsp25 in 5uM serial sections. Results: In the HE morphological analysis in 18-day embryos, the stage of tooth development was in the cap phase, while in the 7-day old animals it was in the bell phase. Conclusion: The expression of STRO-1 in the embryos was not found in the region of the dental papilla or enamel organ, however, in the 7-day-old animals, STRO-1-positive cells were found in the region of the dental follicle and dental papilla. As for the Hsp25, this exhibited weak marking in the cap phase while in the bell phase, there was a reaction, mainly in the odontoblasts. The expressions in the site of these markers vary according to the stage of tooth development.

RESUMO Objetivos Os objetivos deste estudo foram avaliar a prevalência e a gravidade da fluorose dentária e avaliar o impacto da fluorose dentária na qualidade de vida relacionada à saúde bucal (QVRSB) de crianças residentes em duas cidades peruanas com diferentes níveis de flúor de água. Métodos Uma amostra de 292 crianças entre 11 e 14 anos de idade e ambos os sexos foram selecionada nas escolas públicas e privadas de ensino fundamental nas duas cidades. O exame oral clínico foi realizado utilizando-se o índice de Dean para avaliar a prevalência e a gravidade da fluorose dentária e o Questionário de Percepção Infantil 11-14 (CPQ 11-14) para avaliar a associação entre fluorose dentária e QVRSB. Resultados A prevalência de fluorose dentária foi de 75% e o escore moderado foi o mais frequente (36%). As duas cidades têm baixo nível socioeconômico e predominam as crianças de escolas públicas (74%). Não houve impacto da fluorose na QVRSB. É possível que os adolescentes que vivem em um contexto social em que a aparência dentária seja muito semelhante entre as pessoas tenham um senso de identidade diferente de outras sociedades, o que pode influenciar em sua percepção de QVRSB. Conclusão Embora a prevalência de fluorose dentária tenha sido muito alta, não teve impacto na QVRSB.

ABSTRACT Objectives The aims of this study were to evaluate the prevalence and severity of dental fluorosis and to assess the impact of dental fluorosis on oral health related quality of life (OHRQoL) of children living in two Peruvian towns with different water fluoride levels. Methods A sample of 292 children between 11 and 14 years of age and both genders were selected among public and private primary schools in the 2 towns. Clinical oral examination was carried out using Dean’s index to assess the prevalence and severity of dental fluorosis and the Child Perceptions Questionnaire 11-14 (CPQ 11-14) was used to evaluate the association between dental fluorosis and OHRQoL. Results Dental fluorosis prevalence was 75% and the moderate score was the most frequent (36%). The two towns have a low socioeconomic level and children from public schools predominate (74%). There was no impact of fluorosis on OHRQoL. It is possible that adolescents living in a context with very similar dental appearance of their peers build a sense of identity different than other populations, which can influence in their OHRQoL perception. Conclusions Even though dental fluorosis prevalence was very high it did not have impact on OHRQoL.

Abstract The objective of this study was to evaluate the effect of different follow-up consultation intervals on caries incidence in children with low caries risk. The study was composed of 224 children aged between 3 and 5 years and with low risk of caries. The children were randomly allocated into two groups, according to two different follow-up consultation intervals: Group 1 (G1) – 12-month follow-up interval; Group 2 (G2) – 18-month follow-up interval. All oral clinical examinations were performed by a single examiner who was previously calibrated and blinded in relation to the study groups. An external dentist provided the advice on oral hygiene and diet and evaluated the children’s socioeconomic conditions. The Chi-square and Mann-Whitney tests were used to evaluate the differences between groups. Poisson regression analyses were performed to assess the association of caries incidence with the other variables. At the end of the study there was a significant difference between the groups regarding initial active lesions (p = 0.012), and children in G2 were at a higher risk of developing initial active lesions than those in G1 (p = 0.047). Children who had a higher number of teeth with initial active lesions in the follow-up consultations were at a higher risk of developing cavitated dentin caries (p = 0.001). Both follow-up intervals are justifiable. Although significant results have been observed for initial active caries lesions within the 18-month follow-up interval, it should be noted that these lesions can be treated using just preventive measures. Besides, different return interval had no effect in cavitated dentin lesions.

Abstract: The increasing number of cases of COVID-19 worldwide poses challenges to healthcare systems not only in effectively identifying individuals positive for SARS-CoV-2, but also in isolating cases to minimise contagion in early diagnosing more severe cases that will need hospitalization. Less-invasive collection methods are indispensable in a pandemic scenario as large-scale tests are necessary to understand the actual evolution of contagion in different populations, thus enabling decision-making based on scientific evidence. Saliva has been shown to be an alternative for diagnosing viral infections as this biological fluid can be easily and quickly collected without using specific devices and causing less discomfort during collection, which is an important factor for use in children. Despite the smaller percentage of severe cases of COVID-19 among children, they seem to play an important role in the contagion as they have the same potential of transmission as that of adults. Knowing the evolution of COVID-19 pandemic in children is extremely important, mainly regarding the changing in rules of social distancing, such as re-opening schools and recreational activities spaces. In addition, countless cases of a severe multi-systemic inflammatory syndrome that shares clinical and laboratory features with Kawasaki's disease have been recently related to SARS-CoV-2 infections in children, adolescents and young adults. In view of this scenario, the aim of this study was to present saliva as an alternative for seeking diagnostic and prognostic markers of COVID-19 in children, including adequate sample collection techniques for different age groups.