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
Aim: To evaluate the aesthetic self-perception capacity of adolescents from public schools regarding the presence of oral alterations from malocclusions. Methods: Cross-sectional and quantitative study with 374 adolescents between 16 and 18 years old, belonging to public schools in the city of Parnaíba, Piauí. The adolescents were separated by gender (male and female) and examined for malocclusions. The problem identified for each participant was recorded for later comparison of the influence of its presence with aesthetic self-perception. Then, all adolescents, including those who demonstrated normal occlusion during the clinical evaluation, answered a questionnaire containing eight questions about their perception of their own smile and its impact on their interpersonal relationships. Self-perception was also analyzed by comparing the responses of those with normal occlusion with that of malocclusion individuals. Student's t-tests were used to verify if there was a difference between the groups. Results: The most prevalent malocclusions after clinical examination were midline deviations, crowding and diastemas, and the ones that most scored in the adolescents' perception were crowding, misalignment and diastemas. Conclusion: The adolescents were able to perceive the aesthetic alterations resulting from malocclusions, being determinants of dissatisfaction when smiling. They were not ashamed to smile, did not consider that the ideal smile would improve their self-esteem and that misaligned teeth would not interfere with flirting and interpersonal relationships