Brazilian primary school teachers' knowledge about immediate management of dental trauma

OBJECTIVE: To assess the level of knowledge of primary school teachers in the public school network of Northeastern Brazil with respect to management of dental trauma and its relationship with prognosis. METHODS: A questionnaire was applied to 195 school teachers of public schools in Northeastern Brazil. The questionnaire comprised 12 objective questions about dental trauma and methods for its prevention and management. Data were submitted to chi-square test and Poisson regression test (P > 0.05). RESULTS: Out of the 141 teachers who responded the questionnaires, the majority were women (70.2%) and most of them had experienced previous dental accidents involving a child (53.2%). The majority (84.4%) had incomplete college education and few were given some training on how to deal with emergency situations during their undergraduate course (13.5%) or after it (38.3%). Their level of knowledge about dental trauma and emergency protocols showed that unsatisfactory knowledge level was associated with the male sex: 46% higher for men in comparison to women (P = 0.025). CONCLUSIONS: Approximately half of teachers evaluated had unsatisfactory knowledge about dental trauma and emergency protocols, with female teachers showing more knowledge than men. .

OBJETIVO: avaliar o nível de conhecimento de professores de escolas primárias na rede pública de ensino na região nordeste do Brasil, no que diz respeito ao manejo do paciente traumatizado e sua relação com o prognóstico. MÉTODOS: aplicou-se um questionário a 195 professores da rede pública de ensino da região nordeste do Brasil. O questionário continha 12 questões objetivas sobre os traumatismos dentários e seus métodos de prevenção e manejo. Após obtenção dos dados, esses foram submetidos ao teste qui-quadradro e ao teste de regressão de Poisson (p > 0,05). RESULTADOS: dos 141 professores que responderam o questionário, a maioria era composta pelo sexo feminino (70,2%) e a maior parte já vivenciara algum episódio de acidente com criança (53,2%). A maioria (84,4%) possui ensino superior incompleto e poucos foram contemplados com manobras de urgência na graduação (13,5%) ou após essa (38,3%). Os resultados da regressão para o nível de conhecimento sobre traumatismos dentários e protocolo de urgência em relação às variáveis explanatórias do estudo demonstraram que o conhecimento insatisfatório foi associado ao sexo masculino, sendo 46% maior para os homens (p = 0,025). CONCLUSÃO: aproximadamente metade dos professores possui conhecimento insatisfatório sobre traumatismos dentários e protocolo de urgência, sendo que os professores do sexo feminino apresentaram maior conhecimento do que os do sexo masculino. .

Brazilian primary school teachers' knowledge about immediate management of dental trauma.

OBJECTIVE: To assess the level of knowledge of primary school teachers in the public school network of Northeastern Brazil with respect to management of dental trauma and its relationship with prognosis. METHODS: A questionnaire was applied to 195 school teachers of public schools in Northeastern Brazil. The questionnaire comprised 12 objective questions about dental trauma and methods for its prevention and management. Data were submitted to chi-square test and Poisson regression test (P > 0.05). RESULTS: Out of the 141 teachers who responded the questionnaires, the majority were women (70.2%) and most of them had experienced previous dental accidents involving a child (53.2%). The majority (84.4%) had incomplete college education and few were given some training on how to deal with emergency situations during their undergraduate course (13.5%) or after it (38.3%). Their level of knowledge about dental trauma and emergency protocols showed that unsatisfactory knowledge level was associated with the male sex: 46% higher for men in comparison to women (P = 0.025). CONCLUSIONS: Approximately half of teachers evaluated had unsatisfactory knowledge about dental trauma and emergency protocols, with female teachers showing more knowledge than men.

In vitro evaluation of shear bond strength of materials used in bonding 3x3 lingual retainer / Evaluación in vitro de la resistencia al cizallamiento de los materiales utilizados en la adhesión del retenedor lingual 3x3

The aim of the present study was to evaluate which material and technique were the best for bonding 3x3 lingual retainer. One hundred and five bovine mandibular incisors were used, to which contention bars with a standardized size of 7 mm were bonded to the lingual surface. Initially all teeth received prophylaxis with pumice stone and water. After this they were randomly divided into seven groups, denominated and characterized as follows: Group (1) bars bonded with Transbond XT in accordance with the manufacturer's instructions; (2) Tooth surface etching with self-etching agent Transbond (SEPT) followed by bonding with Transbond XT; (3) Bonding with Transbond Plus Color Change (TPCC) without adhesive; (4) Bonding with TPCC + SEPT; (5) Bonding with restorative composite Z100 + adhesive Prime Bond, (6) Z100 without adhesive and (7) Z100 + SEPT. Before bonding in Groups 1, 3, 5 and 6 the lingual surface was etched with 37 percent phosphoric acid for 20 seconds, followed by washing and drying. After bonding the mechanical tests were performed in a Universal mechanical test machine. The values obtained were submitted to the analysis of variance (ANOVA) and afterwards to the Tukey test (p<0.05). We observed absence of statistical differences among Groups 1, 2, 5 and 7 and among Groups 3, 4, 5 and 6 (p<0.05). Group 1 presented the highest bond strength value and Group 6 the lowest. It could be concluded that where bonding of lingual retainer is concerned; the best material to use is Transbond XT irrespective of the etching method, followed by composite Z100 etched with SEPT.

El objetivo fue evaluar cuáles materiales y técnicas eran mejores para la adhesión del retenedor lingual 3x3. Se utilizaron 105 incisivos mandibulares bovinos, a los que se adhirieron barras de contención con un tamaño estándar de 7 mm en la superficie lingual . Inicialmente todos los dientes recibieron profilaxis con piedra pómez y agua. Luego, se dividieron aleatoriamente en siete grupos, denominados y caracterizados como: Grupo (1) con barras unidas con Transbond XT de acuerdo con las instrucciones del fabricante , (2) Con la superficie del diente grabada con el agente de auto- grabado Transbond (SEPT), seguido por la adhesión con Transbond XT, (3) Adhesión con Transbond Plus Color Change (TPCC ) sin adhesivo, (4) Adhesión con TPCC + SEPT, (5) Adhesión con la resina restauradora Z100 + adhesivo Prime Bond, (6) Adhesión con Z100 sin adhesivo y (7) Z100 + SEPT. Previo a la adhesión en los Grupos 1, 3, 5 y 6 la superficie lingual fue grabada con ácido fosfórico al 37 por ciento durante 20 segundos, lavado y secado. Se realizaron los ensayos con una máquina de ensayo mecánico universal. Los valores obtenidos fueron sometidos al análisis de varianza (ANOVA ) y a la prueba de Tukey ( p < 0,05). No hubo diferencias estadísticas entre los grupos 1, 2, 5 y 7 y entre los Grupos 3, 4, 5 y 6 (p < 0,05 ). El grupo 1 presentó el mayor valor de resistencia de adhesión y el Grupo 6 el menor. Se podría concluir que cuando se trata de la adhesión de un retenedor lingual, el mejor material para usar es Transbond XT independiente del método de grabado, seguido de la resina Z100 grabada con SEPT.