5 results on '"Bittencourt, Tatiane Sampaio"'
Search Results
2. Acting and knowledge of emergency rescue teams in dental trauma
- Author
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Abu Hasna, Amjad [UNESP], Ferrari, Carlos Henrique [UNESP], Bittencourt, Tatiane Sampaio [UNESP], Camargo, Carlos Henrique Ribeiro [UNESP], Carvalho, Cláudio Antonio Talge [UNESP], and Universidade Estadual Paulista (Unesp)
- Subjects
stomatognathic diseases ,stomatognathic system ,Emergency rescue teams ,Tooth Avulsion ,Traumatic dental injury - Abstract
Made available in DSpace on 2020-12-12T01:41:19Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-01-01 Objective: Dental trauma is regularly frequent in patients assisted by rescue teams at sites of accidents and by emergency teams in hospitals. However, these professionals are given little or no information about taking care of the injured teeth and mouth. The aim of this study was to evaluate the level of knowledge of rescue and emergency teams’ professionals (physicians, Nurses, and Paramedics) concerning dental trauma first management. Material and methods: 196 professionals of rescue and emergency units had received a standard questionnaire of 5 questions concerning dental trauma first management and reserving avulsed dental tissue (a tooth or its fragment). Results: The results showed high level of attendance of dental trauma patients by paramedics, nurses, and physicians, with very low-level knowledge about dealing with such cases, and with moderate results about the best medium to preserve the avulsed tooth, and the actions taken during the rescue process. Conclusion: Our results show a high occurrence of cases of dental trauma attended by rescue and emergency medical teams, with a lack of knowledge, this suggests a need for more educational campaigns for these professionals with a long-term follow-up. São Paulo State University (Unesp) Institute of Science and Technology São José dos Campos Department of Restorative Dentistry Endodontic Division São Paulo State University (Unesp) Institute of Science and Technology São José dos Campos Department of Restorative Dentistry Endodontic Division
- Published
- 2019
3. In vitro analysis of N-Acetylcysteine in periodontal ligament fibroblasts stimulated by bacterial LPS
- Author
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Bittencourt, Tatiane Sampaio, Universidade Estadual Paulista (Unesp), and Camargo, Carlos Henrique Ribeiro [UNESP]
- Subjects
N-Acetilcisteína ,Cell viability ,Lipopolissacarídeo ,Espécies reativas de oxigênio ,Viabilidade celular ,N-Acetylcysteine ,Lipopolysaccharide ,Oxigen-reactive species ,Fibroblasts ,Fibroblastos - Abstract
Submitted by TATIANE SAMPAIO BITTENCOURT (dratatisampaio@gmail.com) on 2018-04-11T16:45:24Z No. of bitstreams: 1 Dissertação final - Tatiane Sampaio Bittencourt - UNESP.pdf: 2306748 bytes, checksum: 2c8b1dc80443dde5641b966081d8e34f (MD5) Approved for entry into archive by Silvana Alvarez null (silvana@ict.unesp.br) on 2018-04-16T15:54:30Z (GMT) No. of bitstreams: 1 bittencourt_ts_me_sjc.pdf: 2306748 bytes, checksum: 2c8b1dc80443dde5641b966081d8e34f (MD5) Made available in DSpace on 2018-04-16T15:54:30Z (GMT). No. of bitstreams: 1 bittencourt_ts_me_sjc.pdf: 2306748 bytes, checksum: 2c8b1dc80443dde5641b966081d8e34f (MD5) Previous issue date: 2018-02-16 O objetivo deste estudo foi avaliar in vitro o comportamento biológico celular da N-Acetilcisteína (NAC), diante da estimulação ou não pelo LPS bacteriano. Foram utilizados fibroblastos do ligamento periodontal, que ficaram em contato por 48 horas com as substâncias testadas: NAC, Hidróxido de cálcio p.a. (HC), Lipopolissacarídeo de Escheria Coli (LPS), NAC + LPS e HC + LPS. Para os grupos NAC + LPS, HC + LPS e LPS, as células foram estimuladas com 2µg/mL de LPS por 24 horas, previamente aos tratamentos descritos. Foram realizados os testes biológicos de viabilidade celular (XTT), Espécies Reativas de Oxigênio (ROS), Elisa (para as citocinas IL-6, IL-8, IL-10, IL-1β e TNF-α) e Micronúcleo (MNT). Os dados foram analisados estatisticamente pela análise descritiva e pelos testes ANOVA e Kruskall Wallis, seguido do teste Dunn (p˂0.05) para os testes de XTT, ROS e MNT, e para o teste Elisa foi realizado cálculo das médias e desvio padrão. Os resultados obtidos mostraram que NAC teve um bom comportamento, frente à agressão provocada pelo LPS, quanto à produção de ROS. HC apresentou maior viabilidade celular que NAC, embora NAC não tenha apresentado citotoxicidade. Em relação à expressão das citocinas, NAC foi capaz de reduzir o potencial inflamatório do LPS quando da análise do TNF- α e IL-1β. NAC foi capaz de reduzir a genotoxicidade do LPS, como mostrado pelo teste MNT. Concluiu-se que NAC apresentou um comportamento biológico satisfatório, pela viabilidade celular dos fibroblastos, pela redução da geração de ROS e do potencial inflamatório provocado pelo LPS, e por reduzir a sua genotoxicidade. The purpose of this study was to evaluate in vitro the action of N-Acetylcysteine (NAC) and calcium hydroxide (CH) on biological activity, either without or with LPS stimulation in periodontal ligament fibroblasts (PDLF) cells. PDLF were placed in contact with NAC, CH, NAC + LPS, LPS and CH + LPS for 48 hours. PDLF were stimulated by bacterial LPS for 24 hours in NAC + LPS, LPS and CH + LPS groups, before the substances described above are applied. The LPS and NAC effect on cell viability was measured using a XTT test. Reactive oxygen species (ROS) production was evaluated using ROS/superoxide detection kit. Inflammatory cytokines (IL-6, IL-8, IL-10, IL-1β and TNF-α) were evaluated by enzyme-linked immunosorbent (ELISA) assay. Genotoxicity was measured using micronucleus test (MNT). The means and standard deviation for all tests were calculated. Data were analyzed statistically by descriptive analysis, ANOVA and Kruskall Wallis tests, followed by Dunn test (p˂.05). CH was superior to NAC on cellular viability, although NAC was not cytotoxic. The results showed that NAC was able to reduce ROS production of LPS. NAC was able to reduce the inflammatory potential of LPS by decreasing the TNF-α and IL-1β release. NAC was able to reduce the genotoxicity of LPS. It was concluded that NAC showed a satisfactory biological activity, presenting a minimal effect on cell viability of PDLF cells and reducing ROS production and inflammatory potential provoked by LPS, and to decrease its genotoxicity.
- Published
- 2018
4. Acting and knowledge of emergency rescue teams in dental trauma
- Author
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Abu Hasna, Amjad, primary, Ferrari, Carlos Henrique, additional, Bittencourt, Tatiane Sampaio, additional, Camargo, Carlos Henrique Ribeiro, additional, and Carvalho, Cláudio Antonio Talge, additional
- Published
- 2019
- Full Text
- View/download PDF
5. Cyclic fatigue, torsional failure, and flexural resistance of rotary and reciprocating instruments.
- Author
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Ribeiro Camargo CH, Bittencourt TS, Hasna AA, Palo RM, Talge Carvalho CA, and Valera MC
- Abstract
Aim: The aim was to compare cyclic fatigue, torsional failure, and flexural resistance of NiTi endodontic files: Hyflex CM (HYF), Genius files (GEN), WaveOne Gold (WOG), and ProTaper Universal (PTU)., Materials and Methods: Fifteen files of each brand were used in cyclic fatigue test and other fifteen files for flexural test and torsional failure test. To the cyclic fatigue test, used torque limit and revolutions per minute were set according to the respective manufacturer guidelines. The test was performed under deionized water at 36°C, and all files were tested in a 3 mm radius of curvature with an angle of curvature of 60°, time of the fracture was recorded. Torsional fatigue test was performed in the torsional machine (Instron MT, USA), recording the fractured time and torque data by the machine software. Flexural fatigue test was performed in 60° of curvature. All data were statistically analyzed by one-way analysis of variance, and Tukey test for multiple comparisons., Results: Cyclic fatigue (seconds)= HYF: 744.1 ± 231.9/GEN: 477.3 ± 220.5/WO: 278.4 ± 57.0/PTU: 152.4 ± 65.2; torsional failure (N × cm)= HYF: 6.85 ± 1.484/GEN: 6.55 ± 0.828/WOG: 5.73 ± 0.360/PTU: 4.43 ± 0.900; flexural resistance (N × mm)= HYF: 0.33 ± 0.294/GEN: 0.19 ± 0.136/WOG: 0.98 ± 0.216/PTU: 1.85 ± 0.276., Conclusion: HYF and GEN showed the best results for cyclic fatigue, torsional failure, and flexural resistance, followed by WOG and PTU., Competing Interests: There are no conflicts of interest., (Copyright: © 2021 Journal of Conservative Dentistry.)
- Published
- 2020
- Full Text
- View/download PDF
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