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OBJECTIVES: This retrospective study evaluated the performance of posterior composites after up to 33 years of clinical service and investigated factors associated with the risk of failures over time including patient- and tooth-related variables. METHODS: Patients who received at least one Class I or Class II direct composite restoration in a private office in 1986-1992 and had follow-up appointments were included. Failures and interventions over time were investigated using the dental records. A follow-up clinical recall was carried out in 2020. Two scenarios were considered: restorations that did not require any intervention (success) or restorations that were repaired and still functional (survival). Multivariate Cox regression analyses and Kaplan-Meier curves were performed using success and survival rates (p < 0.05). RESULTS: One hundred patient records and 683 restorations were included. A total of 353 failures were reported (success rate= 48%). Main reasons for failure were fracture and secondary caries. Most interventions after failures were repairs. Replacements were registered in 183 cases (survival rate= 73%). Annual failure rates were below 2.5% (success) and 1.1% (survival). Larger restorations and maxillary molars had higher failure risks. No significant differences in success rates among different resin composites was observed. A typical observation in this sample of restorations was the presence of moderate to advanced signs of aging, including marginal and surface staining, wear, chipping, changes in anatomical shape and translucency. Clearly aged restorations were still clinically satisfactory. SIGNIFICANCE: This long-term, practice-based study indicates that resin composites can be used to restore posterior teeth with a long-lasting durability.

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This study investigated the presence of co-authorship from Brazil in articles published in top-tier dental journals and analyzed the influence of international collaboration, article type (original research or review), and funding on citation rates. Articles published between 2015 and 2017 in 38 selected journals from 14 dental subareas were screened in Scopus. Bibliographic information, citation counts, and funding details were recorded for all articles (N=15619). Collaboration with other top-10 publishing countries in dentistry was registered. Annual citations averages (ACA) were calculated. A linear regression model assessed differences in ACA between subareas. Multilevel linear regression models evaluated the influence of article type, funding, and presence of international collaboration in ACA. Brazil was a frequent co-author of articles published in the period (top 3: USA=25.5%; Brazil=13.8%; Germany=9.2%) and the country with most publications in two subareas. The subjects with the biggest share of Brazil are Operative Dentistry/Cariology, Dental Materials, and Endodontics. Brazil was second in total citations, but fifth in citation averages per article. From the total of 2155 articles co-authored by Brazil, 74.8% had no co-authorship from other top-10 publishing countries. USA (17.8%), Italy (4.2%), and UK (3.2%) were the main co-author countries, but the main collaboration country varied between subjects. Implantology and Dental Materials were the subjects with most international co-authorship. Review articles and articles with international collaboration were associated with increased citation rates, whereas the presence of study funding did not influence the citations.

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Objetivos: O condicionamento da superfície dos tecidos dentários duros com ácido fosfórico 35% é normalmente utilizado para fornecer retenção micromecânica para adesivos odontológicos. Quando lavado da superfície, o ácido pode gerar gosto amargo e desagradável ao paladar do paciente. O objetivo deste estudo foi analisar o efeito da adição de um agente aromatizante à composição do gel de ácido fosfórico 35% e investigar se existe alteração de características fundamentais deste material, como sua capacidade de desmineralizar a superfície dentária. Métodos: Além de um grupo controle (sem flavorizante), foram testados grupos de ácido fosfórico 35% com a adição de 0,5% ou 3% do aromatizante (Aroma Abacaxi Pó; Bio Green Ingredients). Foram realizadas análises de viscosidade, estabilidade do pH e de desmineralização da superfície de esmalte condicionada por microscopia eletrônica de varredura, além de teste de resistência de união ao esmalte por microcisalhamento. Resultados: Apesar dos grupos apresentarem pequenas diferenças entre si, nenhuma das alterações se mostrou significativa, exceto o aumento da viscosidade do gel contendo 3% do aromatizante. Conclusões: A adição de agente aromatizante ao gel condicionador de ácido fosfórico 35% parece ser alternativa viável para reduzir os problemas relacionados ao contato com o sabor desagradável do material, uma vez que não promoveu alteração negativa significativa nas características e comportamento do ácido(AU)

Objectives: Etching of dental hard tissues surfaces with 35% phosphoric acid is usually used to provide micromechanical interlocking with dental adhesives. When washed from the surface, the acid can cause a bitter taste unpleasant to the patient. The aim of this study was to analyze the effect of the addition of a flavoring agent to 35% phosphoric acid gel and investigate whether there is change in the fundamental characteristics of this material, including its ability to demineralize dental surfaces. Methods: In addition to a control group (without flavoring agent), groups were tested with the addition of 0.5% or 3% of the flavoring compound (pineapple flavor powder, Bio Green Ingredients) to 35% phosphoric acid. Analyses of viscosity, pH stability and demineralization of enamel surfaces by scanning electron microscopy were carried out, as well microshear bond strength to enamel. Results: Although the groups had minor differences among themselves, none of the changes were significant, except the increased viscosity of the gel containing 3% of the flavoring agent. Conclusions: The addition of flavoring agent to 35% phosphoric acid gel conditioner seems to be a viable alternative to reduce the problems related to contact with the unpleasant taste of the material, since it promoted no negative changes in the characteristics and behavior of the acid(AU)

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Abstract This study investigated the presence of co-authorship from Brazil in articles published in top-tier dental journals and analyzed the influence of international collaboration, article type (original research or review), and funding on citation rates. Articles published between 2015 and 2017 in 38 selected journals from 14 dental subareas were screened in Scopus. Bibliographic information, citation counts, and funding details were recorded for all articles (N=15619). Collaboration with other top-10 publishing countries in dentistry was registered. Annual citations averages (ACA) were calculated. A linear regression model assessed differences in ACA between subareas. Multilevel linear regression models evaluated the influence of article type, funding, and presence of international collaboration in ACA. Brazil was a frequent co-author of articles published in the period (top 3: USA=25.5%; Brazil=13.8%; Germany=9.2%) and the country with most publications in two subareas. The subjects with the biggest share of Brazil are Operative Dentistry/Cariology, Dental Materials, and Endodontics. Brazil was second in total citations, but fifth in citation averages per article. From the total of 2155 articles co-authored by Brazil, 74.8% had no co-authorship from other top-10 publishing countries. USA (17.8%), Italy (4.2%), and UK (3.2%) were the main co-author countries, but the main collaboration country varied between subjects. Implantology and Dental Materials were the subjects with most international co-authorship. Review articles and articles with international collaboration were associated with increased citation rates, whereas the presence of study funding did not influence the citations.

Resumo Este estudo investigou a presença de coautoria do Brasil em artigos publicados nos principais periódicos odontológicos e analisou a influência da colaboração internacional, tipo de artigo (artigo original ou revisão) e financiamento nas taxas de citação. Artigos publicados entre 2015 e 2017 em 38 periódicos selecionados de 14 subáreas foram pesquisados no Scopus. Informações bibliográficas, número de citações e detalhes de financiamento foram registrados para todos os artigos (N=15619). Colaboração com outros países no top-10 de publicações em odontologia foi coletada. Médias anuais de citação (MAC) foram calculadas. Um modelo de regressão linear avaliou as diferenças de MAC entre as subáreas. Modelos multinível de regressão linear avaliaram a influência do tipo de artigo, financiamento e presença de colaboração internacional nas MAC. O Brasil foi coautor frequente de artigos publicados no período (top 3: EUA=25,5%; Brasil=13,8%; Alemanha=9,2%) e o país com mais publicações em duas subáreas. As subáreas com maior participação do Brasil foram Dentística/Cariologia, Materiais Dentários e Endodontia. O Brasil foi o segundo no total de citações, porém quinto em citações médias por artigo. Do total de 2155 artigos de coautoria do Brasil, 74,8% não tiveram coautoria de outros países do top-10 de publicação. EUA (17,8%), Itália (4,2%) e Reino Unido (3,2%) foram os principais países coautores, porém o principal país de colaboração variou entre as subáreas. Implantodontia e Materiais Dentários foram as subáreas com mais coautoria internacional. Artigos de revisão e artigos com colaboração internacional foram associados a maiores taxas de citação, enquanto a presença de financiamento do estudo não influenciou as citações.

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This study analyzes the characteristics of the top-100 most cited articles published in international dental journals with at least one coauthor affiliated to Brazil. A search in Scopus database for articles published between 1996 and 2017 was carried out in the 178 journals belonging to the category "Dentistry" identified in SCImago Journals & Country Rank. From the top-100 most cited articles, variables related to the journal, article, and authors were collected. Annual citation averages (ACA) and relative citation ratios (RCR) were calculated. Data were analyzed descriptively. There were 75 original reports and 25 reviews in the sample. The number of citations ranged between 124 and 657 (mean=202, median=168). The papers were published in 31 different journals (46% in only four journals), none based in Brazil. The most frequent subjects (61%) were Dental Materials, Endodontics, and Periodontology, which accounted for 63.6% of the total citations. The subject with the highest ACA was Oral and Maxillofacial Surgery and the subject with the highest RCR was Oral Radiology. Only 12 articles were cited more than 300 times. International collaboration was present in 61 articles and funding was reported in 49 articles. The first author was from Brazil in 70% and corresponding author in 55% of the papers. Southeast (83%) and South (20%) were the regions of Brazil with most presence of coauthors. This top-100 list is presented to provide an overview of the most cited articles and aid in supporting further analyses regarding publication and citation behaviors of Brazilian dentistry.

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Abstract This study analyzes the characteristics of the top-100 most cited articles published in international dental journals with at least one coauthor affiliated to Brazil. A search in Scopus database for articles published between 1996 and 2017 was carried out in the 178 journals belonging to the category "Dentistry" identified in SCImago Journals & Country Rank. From the top-100 most cited articles, variables related to the journal, article, and authors were collected. Annual citation averages (ACA) and relative citation ratios (RCR) were calculated. Data were analyzed descriptively. There were 75 original reports and 25 reviews in the sample. The number of citations ranged between 124 and 657 (mean=202, median=168). The papers were published in 31 different journals (46% in only four journals), none based in Brazil. The most frequent subjects (61%) were Dental Materials, Endodontics, and Periodontology, which accounted for 63.6% of the total citations. The subject with the highest ACA was Oral and Maxillofacial Surgery and the subject with the highest RCR was Oral Radiology. Only 12 articles were cited more than 300 times. International collaboration was present in 61 articles and funding was reported in 49 articles. The first author was from Brazil in 70% and corresponding author in 55% of the papers. Southeast (83%) and South (20%) were the regions of Brazil with most presence of coauthors. This top-100 list is presented to provide an overview of the most cited articles and aid in supporting further analyses regarding publication and citation behaviors of Brazilian dentistry.

Resumo Este artigo analisa as características dos 100 artigos mais citados publicados em periódicos internacionais de odontologia com ao menos um co-autor afiliado ao Brasil. Uma busca na base de dados Scopus por artigos publicados entre 1996 e 2017 foi realizada nos 178 periódicos pertencentes à categoria "Dentistry" identificados no SCImago Journals & Country Rank. Dos 100 artigos mais citados, variáveis relacionadas ao periódico, artigo e autores foram coletadas. Médias anuais de citação (MAA) e razões de citação relativa (RCR) foram calculadas. Os dados foram analisados descritivamente. A amostra foi composta por 75 artigos originais e 25 revisões. O número de citações variou entre 124 e 657 (média=202, mediana=168). Os artigos foram publicados em 31 periódicos diferentes (46% em apenas quatro periódicos), nenhum do Brasil. Os temas mais frequentes (61%) foram Materiais Dentários, Endodontia e Periodontia, somando 63,6% do total de citações. O tema com maior MAA foi Cirurgia Oral e Maxilofacial e o tema com maior RCR foi Radiologia Oral. Apenas 12 artigos foram citados mais de 300 vezes. Colaboração internacional estava presente em 61 artigos e financiamento foi reportado em 49 artigos. O primeiro autor era do Brasil em 70% e o correspondente em 55% dos artigos. As regiões do Brasil com mais co-autores presentes foram Sudeste (83%) e Sul (20%). Esta lista é apresentada para prover uma fotografia dos 100 artigos mais citados e ajudar a fomentar análises posteriores em relação a comportamentos de citação e publicação da odontologia brasileira.

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