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1.
Revista Naval de Odontologia ; 47(1): [7-13], 12/06/2020.
Article in English | LILACS | ID: biblio-1359694

ABSTRACT

This study evaluated the ex vivo effectiveness of different final irrigation protocols in smear layer removal and intraradicular dentine erosion. Thirty five extracted human canines were instrumented and randomly divided, according to final rinse techniques used, into 7 groups: 1 (ED3M) and 3 (ED3US), 17% EDTA for 3 minutes with manual and ultrasonic agitation, respectively; 2 (CA30M) and 4 (CA30US), 10% citric acid for 30 seconds with manual and ultrasonic agitation, respectively; 5 (CA3M) and 6 (CA3US), 10% citric acid for 3 minutes with manual and ultrasonic agitation, respectively; and, 7 (Na3), 5.25% NaOCl for 3 minutes without agitation (control). All specimens then were irrigated with 5.25% NaOCl, split lengthwise, and examined under scanning electron microscopy (SEM) in apical, middle and coronal thirds. Data were analyzed with Kruskal-Wallis and Mann-Whitney tests. The effectiveness of 17% EDTA and 10% citric acid in removing smear layer was significantly greater than 5.25% NaOCl (control). There were no significant differences among final irrigation protocols in smear layer removal or erosive effects. However, when comparing the thirds in groups 1 (ED3M) and 2 (CA30M), the least smear layer removal and erosion was seen in the apical third, but the group 4 procedure (CA30US) was more effective than 1 (ED3M) (p=0.0004), 2 (CA30M) (p=0.0018) or 3 (ED3US) (p=0.0003) in smear layer removal for the apical third. It was concluded that protocols used in this study were similar in smear layer removal and erosive effects.


Subject(s)
Humans , Male , Female , Tooth Erosion , Microscopy, Electron, Scanning , Edetic Acid , Citric Acid
2.
Rev. flum. odontol ; 16(33): 27-30, jan.-jun. 2010. tab, graf
Article in Portuguese | LILACS, BBO | ID: lil-589635

ABSTRACT

O objetivo desta pesquisa foi avaliar o nível de informação dos alunos dos 4º, 5º e 6º períodos da Faculdade de Odontologia da Universidade Federal Fluminense (FO-UFF) acerca da importância do Banco de Dentes Humanos (BDH) e sua funcionalidade. Foram entrevistados 95 alunos, utilizando questionário com perguntas fechadas. Os resultados indicaram que 100% dos alunos tem consciência da existência do BDH na FO-UFF e que 71,3% tem conhecimento de sua finalidade. Esse conhecimento é diferenciado em função do período que o aluno esteja cursando (x2), sendo a proporção de alunos do 4º período significativamente menor (p<0,05). Os autores concluíra, que há necessidade de um maior trabalho de divulgação na população de alunos estudada sobre a importância do BDH.


This research’s goal was to evaluate the level of information known by the 4th, 5th and 6th terms’ students from the Dental School at Universidade Federal Fluminense (FO-UFF) about the importance of the Human Teeth Bank (BDH) and its functionality. There were 95 students in the research, and it was used an objective assessment. The results indicated that 100% of the students know about UFF´s Dental School teeth bank, and that 71,3% knowm it’s purpose. This knowledge depends on the term the student’s on (x2), and the proportion of students who are on their 4th term is highly smaller (p<0,05). The authors concluded that there’s a need to inform more the 4th, 5th and 6th terms’ students about the importance of BDH.


Subject(s)
Education, Dental , Schools, Dental , Students, Dental
3.
Rev. bras. odontol ; 65(2): 202-206, jul.-dez. 2008. ilus, tab
Article in Portuguese | LILACS, BBO | ID: lil-541827

ABSTRACT

O objetivo deste trabalho, in vitro, foi comparar a detecção de canais em 100 pré-molares inferiores humanos por método radiográfico, exame a olho nu, com auxílio de microscópio operatório clínico (MOC), após diafanização, e também analisar a frequência de multiplicidade anatômica dos canais observados. Não houve diferença significativa entre os meios de detecção (Kruskal-Wallis). A maior incidência foi de canais únicos, sendo 52% nos primeiros e 86% nos segundos. Observou-se a presença de três canais em 6% dos primeiros pré-molares. Houve diferença significativa (Mann-Whitney - p<0,0001) na presença de múltiplos canais nos primeiros pré-molares em relação aos segundos.


Subject(s)
Bicuspid , Dental Pulp Cavity/anatomy & histology , Dental Pulp Cavity , In Vitro Techniques , Bicuspid
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