ABSTRACT
Background: Microscopy is a resource used in endodontics as an aid in the study of pulp and periapical pathologies; it has allowed Endodontics to become more accurate, less invasive and has enabled greater chances of success in treatment. We aimed to map the scientific production on "microscopy" and "endodontics" in the databases, the ISI Web of Knowledge/Web of Science tm. Methods: This bibliometric survey was conducted using ISI Web of Knowledge/Web of Science database, in the time frame between the years 1945 and 2016, the first being found in 1981. Results: Overall, 287 articles were identified. These articles are published in 63 different journals and were written by 1145 authors who have links to 336 institutions, located in 46 countries. To achieve these articles, 5,668 references were used, with an average of approximately 20 references per article. In the national literature the number of studies on the subject is broad compared to the international literature. Conclusion: The bibliometric review showed the potential of microscopy in clinical practice, the continuity of the investigation, in view of the need to expand knowledge on the topic that remains relevant.
ABSTRACT
O objetivo do presente estudo é verificar o teor de cloro ativo e pH das soluções de hipoclorito de sódio nas concentrações de 0,5%, 1% e 2,5% adquiridas em lojas de material odontológico de Teresina - PI. Analisou-se 11 amostras medindo o teor de cloro ativo através do método da titulometria e pH utilizando pHmetro eletrônico. Observou-se que as substâncias analisadas se encontravam com o teor de cloro acima do especificado nos rótulos e pH alcalino, sendo apenas uma das amostras com o teor abaixo do especificado e pH menor que 9. De acordo com os resultados, conclui-se que as amostras avaliadas com soluções de hipoclorito de sódio dotam de concentrações de cloro diferentes daquelas especificadas nos rótulos.
One of the most important stages of endodontic treatment is the chemical-mechanical preparation that aims to generate cleaning, with the use of chemical irrigation solutions and instruments that help to sanitize the canal. The objective of the present study is to verify the active chlorine content and pH of the sodium hypochlorite solutions at the concentrations of 0.5%, 1% and 2.5% obtained at dental material stores in Teresina - PI. The 11 samples were analyzed by measuring the active chlorine content using the titration method and pH using electronic pH meter. It was observed that the substances analyzed were chlorine content higher than specified on the labels and alkaline pH, being only one of the samples with chlorine content below the specified and pH less than 9. According to the results, it was concluded that samples tested with sodium hypochlorite solutions were contained chlorine concentrations different from those specified on the labels.
ABSTRACT
Os dentes de estoque são dentes artificiais utilizados para a confecção de próteses, sendo que a resina acrílica tem sido o material de eleição devido às suas inúmeras vantagens, porém, assim como qualquer outro material, possui suas desvantagens, dentre elas: instabilidade de cor. O uso diário de bebidas ácidas em geral, como café e refrigerantes, tem tornando-se cada vez mais frequente, podendo comprometer a estética alterando a cor dos dentes artificiais. Assim, o avanço tecnológico tem almejado o melhoramento da composição dos dentes de estoque. Este estudo teve como objetivo analisar a alteração de cor de dentes de estoque de diferentes marcas após serem submetidos à submersão em dois líquidos com potencial de coramento. Foram selecionadas três marcas de dentes: Pop Dent (DentBras®), Biolux (Vipi®) e Trilux (Vipi®), sendo utilizados 15 incisivos centrais superiores direitos de cada marca. Tais dentes foram imersos em café e Coca-Cola®. A avaliação da alteração da cor foi feita por espectrofotometria, nos intervalos de 7, 15 e 30 dias, sendo os dados obtidos submetidos à análise estatística. Observou-se que os dentes Pop Dent (DentBras®) apresentaram alterações estatisticamente significantes nos três intervalos de tempo para os dois líquidos; os Biolux (Vipi®) apenas após 15 dias e os Trilux (Vipi®) evidenciaram alteração estatisticamente significante apenas com 30 dias para o café e 15 dias para a Coca-Cola®. O café e a Coca-Cola® apresentaram o potencial de manchamento semelhante um ao outro (AU).
Stock teeth are artificial teeth used to make prostheses, and acrylic resin has been the material of choice because of its numerous advantages, but, like any other material, it has its disadvantages, among them: color instability. The daily use of acidic beverages in general, as coffee and soft drinks, has become increasingly frequent and can compromise the aesthetics by altering the color of artificial teeth. So technological advance has been aiming the improvement of stock teeth composition. The aim of this study was to analyze color change of different brands of stock teeth after being submitted to submersion in two liquids with stain potential. Three different teeth brands were selected: Pop Dent (DentBras®), Biolux (Vipi®) and Trilux (Vipi®), 15 central superior incisors of each brand were used. These teeth were immersed in coffee and Coca-Cola®. The color change was evaluated by spectrophotometry, at intervals of 7, 15 and 30 days, the data was submitted to statistical analysis. It was observed that the Pop Dent teeth (DentBras®) presented statistically significant changes in the three time intervals for the two liquids; the Biolux (Vipi®) only after 15 days and the Trilux (Vipi®) showed statistically significant alteration only in 30 days for coffee and 15 days for Coca-Cola®. Coffee and CocaCola® showed the potential for staining similar to each other (AU).
