Efeito antibacteriano do preparo biomecânico e de uma pasta à base de hidróxido de cálcio sobre bactérias presentes em canais radiculares de dentes decíduos necrosados após trauma

Detalhes bibliográficos
Autor(a) principal: Sousa, Denise Lins de
Data de Publicação: 2008
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Repositório Institucional da Universidade Federal do Ceará (UFC)
Texto Completo: http://www.repositorio.ufc.br/handle/riufc/1724
Resumo: One of the main objectives of endodontic treatment of roots canals with necrotic pulps consists in eliminating the microorganisms spread throughout the ramifications of root canal system. This study, comprised by one manuscript, had the objective to evaluate the antiseptic efficacy of biomechanical preparation and a calcium hydroxide-paste in root canals of human primary teeth with necrotic pulp after trauma and to detect the microorganisms Fusobacterium nucleatum and black-pigmented bacilli in this teeth. According to stringent inclusion criteria, 18 primary teeth with necrotic pulp were selected. Bacterial samples were taken after crown access (S1) and 72h after the removal of dressing with a calcium hydroxide paste (S3), but to 10 teeth were taken a other bacterial sample after chemomechanical preparation with 0.5% NaOCl as an irrigant (S2). Bacteriological samples were collected by introducing 3 sequential sterile absorbent paper points, of a size visually compatible with the root canal diameter. After approximately 1 min, the paper points were removed and placed in a test tube containing reduced transport fluid and were sent for microbiological evaluation. In the S1, the microorganisms were found in 7/18 (94,4%) of the samples, with a colony forming units (CFU’s) media of 5.4 x 105. In the S2, bacteria were cultured in only 1/10 (10%) root canal, with the CFU’s media of 4.3 x 102, and in the S3 bacteria were cultured in 15/18 (83.3%), with the CFU’s media of 1.5 x 105. A statistically significant reduction in bacterial counts was observed between S1 and S2, however no statistically significant difference was observed for comparisons involving S1 and S3, and S2 and S3. The microorganisms Fusobacterium nucleatum and black-pigmented bacilli were detected in 55.5% (10/18) and 11.1% (2/18), respectively, in the S1, no were found in the S2, and in the S3 were found in 16.6% (3/18) and 5.5% (1/18), respectively. In the S1, the gram-negative cocci (15/18) and gram-negative rods (14/18) were the most prevalent groups (83.3% and 77.8%, respectively). In the S2, the gram-positive cocci was the only group of the bacteria observed (1/10), and in the S3, the gram-positive cocci was the group most commonly recovered (66.7%). It was conclude that biomechanical preparation were important in the antisepsis of the root canal because reduced significantly the number of bacteria in the main canal however the calcium hydroxide paste had a antibacterial efficacy limited, no prevent the regrowing bacterial after used as dressing intracanal.
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spelling Efeito antibacteriano do preparo biomecânico e de uma pasta à base de hidróxido de cálcio sobre bactérias presentes em canais radiculares de dentes decíduos necrosados após traumaAntiseptic efficacy of biomechanical preparation and a calcium hydroxide-paste in root canals of human primary teeth with necrotic pulp after traumaDente DecíduoNecrose da Polpa DentáriaHidróxido de CálcioOne of the main objectives of endodontic treatment of roots canals with necrotic pulps consists in eliminating the microorganisms spread throughout the ramifications of root canal system. This study, comprised by one manuscript, had the objective to evaluate the antiseptic efficacy of biomechanical preparation and a calcium hydroxide-paste in root canals of human primary teeth with necrotic pulp after trauma and to detect the microorganisms Fusobacterium nucleatum and black-pigmented bacilli in this teeth. According to stringent inclusion criteria, 18 primary teeth with necrotic pulp were selected. Bacterial samples were taken after crown access (S1) and 72h after the removal of dressing with a calcium hydroxide paste (S3), but to 10 teeth were taken a other bacterial sample after chemomechanical preparation with 0.5% NaOCl as an irrigant (S2). Bacteriological samples were collected by introducing 3 sequential sterile absorbent paper points, of a size visually compatible with the root canal diameter. After approximately 1 min, the paper points were removed and placed in a test tube containing reduced transport fluid and were sent for microbiological evaluation. In the S1, the microorganisms were found in 7/18 (94,4%) of the samples, with a colony forming units (CFU’s) media of 5.4 x 105. In the S2, bacteria were cultured in only 1/10 (10%) root canal, with the CFU’s media of 4.3 x 102, and in the S3 bacteria were cultured in 15/18 (83.3%), with the CFU’s media of 1.5 x 105. A statistically significant reduction in bacterial counts was observed between S1 and S2, however no statistically significant difference was observed for comparisons involving S1 and S3, and S2 and S3. The microorganisms Fusobacterium nucleatum and black-pigmented bacilli were detected in 55.5% (10/18) and 11.1% (2/18), respectively, in the S1, no were found in the S2, and in the S3 were found in 16.6% (3/18) and 5.5% (1/18), respectively. In the S1, the gram-negative cocci (15/18) and gram-negative rods (14/18) were the most prevalent groups (83.3% and 77.8%, respectively). In the S2, the gram-positive cocci was the only group of the bacteria observed (1/10), and in the S3, the gram-positive cocci was the group most commonly recovered (66.7%). It was conclude that biomechanical preparation were important in the antisepsis of the root canal because reduced significantly the number of bacteria in the main canal however the calcium hydroxide paste had a antibacterial efficacy limited, no prevent the regrowing bacterial after used as dressing intracanal.Um dos principais objetivos do tratamento endodôntico dos canais radiculares de dentes com polpa necrótica consiste em eliminar os microorganismos localizados no sistema de canais radiculares. Dessa forma, esta dissertação, constituída por um artigo, propõe-se a avaliar o efeito antibacteriano do preparo químico-mecânico e de uma pasta à base de hidróxido de cálcio sobre bactérias presentes em canais radiculares de dentes decíduos necrosados após trauma bem como verificar a presença dos microorganismos Fusobacterium nucleatum e bacilo pigmentado negro nestes dentes. Seguindo os critérios de inclusão, a amostra consistiu de 18 dentes, totalizando 14 pacientes. As coletas microbiológicas foram realizadas após a abertura coronária (C1) e 72h após a remoção da medicação intracanal (C3), sendo que, para 10 dentes, realizou-se outra coleta após a instrumentação (C2). As coletas foram realizadas introduzindo-se sequencialmente 3 cones de papel absorvente estéril, de diâmetro visualmente compatível com o do canal radicular, no interior deste por aproximadamente 1 minuto. Após este intervalo, os cones foram removidos, transferidos para um tubo contendo um fluido reduzido para transporte e levados ao laboratório para processamento microbiológico. Na C1, os microorganismos foram isolados em 17/18 (94,4%) dos canais radiculares, sendo a média de CFUs de 5.4 x 105, na C2, em apenas 1/10 (10%) canal radicular, com uma média de 4.3 x 102, e na C3 em 15/18 (83.3%), com média de 1.5 x 105. Houve uma diferença estatisticamente significante entre C1 e C2, o mesmo não ocorrendo entre C1 e C3 e entre C2 e C3. O microorganismo Fusobacterium nucleatum e o bacilo pigmentado negro foram observados em 55.5% (10/18) e 11.1% (2/18), respectivamente, na C1, não sendo detectados na C2, e na C3 estavam presentes em 16.6% (3/18) e 5.5% (1/18), respectivamente. Na C1, observou-se uma predominância de cocos gram-negativos (15/18) e bacilos gram-negativos (14/18), representando 83.3% e 77.8%, respectivamente. Na C2, os únicos morfotipos detectados foram cocos gram-positivos (1/10), presente em 10% das amostras positivas, e na C3, os cocos-gram positivos predominaram (66.7%). Pode-se concluir que o preparo químico-mecânico desempenhou sua função antibacteriana ao reduzir significativamente o número de microorganismos do canal principal, porém o hidróxido de cálcio possui um efeito antibacteriano limitado, não sendo capaz de prevenir o recrescimento de bactérias após seu uso como medicação intracanal.Moreira Neto , José Jeová SiebraSousa, Denise Lins de2012-02-01T12:46:35Z2012-02-01T12:46:35Z2008info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfSOUSA, D. L. de. Efeito antibacteriano do preparo biomecânico e de uma pasta à base de hidróxido de cálcio sobre bactérias presentes em canais radiculares de dentes decíduos necrosados após trauma. 2008. 40 f. Dissertação (Mestrado em Odontologia) - Universidade Federal do Ceará. Faculdade de Farmácia, Odontologia e Enfermagem, Fortaleza, 2008.http://www.repositorio.ufc.br/handle/riufc/1724porreponame:Repositório Institucional da Universidade Federal do Ceará (UFC)instname:Universidade Federal do Ceará (UFC)instacron:UFCinfo:eu-repo/semantics/openAccess2019-02-01T16:05:09Zoai:repositorio.ufc.br:riufc/1724Repositório InstitucionalPUBhttp://www.repositorio.ufc.br/ri-oai/requestbu@ufc.br || repositorio@ufc.bropendoar:2024-09-11T19:02:36.192173Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)false
dc.title.none.fl_str_mv Efeito antibacteriano do preparo biomecânico e de uma pasta à base de hidróxido de cálcio sobre bactérias presentes em canais radiculares de dentes decíduos necrosados após trauma
Antiseptic efficacy of biomechanical preparation and a calcium hydroxide-paste in root canals of human primary teeth with necrotic pulp after trauma
title Efeito antibacteriano do preparo biomecânico e de uma pasta à base de hidróxido de cálcio sobre bactérias presentes em canais radiculares de dentes decíduos necrosados após trauma
spellingShingle Efeito antibacteriano do preparo biomecânico e de uma pasta à base de hidróxido de cálcio sobre bactérias presentes em canais radiculares de dentes decíduos necrosados após trauma
Sousa, Denise Lins de
Dente Decíduo
Necrose da Polpa Dentária
Hidróxido de Cálcio
title_short Efeito antibacteriano do preparo biomecânico e de uma pasta à base de hidróxido de cálcio sobre bactérias presentes em canais radiculares de dentes decíduos necrosados após trauma
title_full Efeito antibacteriano do preparo biomecânico e de uma pasta à base de hidróxido de cálcio sobre bactérias presentes em canais radiculares de dentes decíduos necrosados após trauma
title_fullStr Efeito antibacteriano do preparo biomecânico e de uma pasta à base de hidróxido de cálcio sobre bactérias presentes em canais radiculares de dentes decíduos necrosados após trauma
title_full_unstemmed Efeito antibacteriano do preparo biomecânico e de uma pasta à base de hidróxido de cálcio sobre bactérias presentes em canais radiculares de dentes decíduos necrosados após trauma
title_sort Efeito antibacteriano do preparo biomecânico e de uma pasta à base de hidróxido de cálcio sobre bactérias presentes em canais radiculares de dentes decíduos necrosados após trauma
author Sousa, Denise Lins de
author_facet Sousa, Denise Lins de
author_role author
dc.contributor.none.fl_str_mv Moreira Neto , José Jeová Siebra
dc.contributor.author.fl_str_mv Sousa, Denise Lins de
dc.subject.por.fl_str_mv Dente Decíduo
Necrose da Polpa Dentária
Hidróxido de Cálcio
topic Dente Decíduo
Necrose da Polpa Dentária
Hidróxido de Cálcio
description One of the main objectives of endodontic treatment of roots canals with necrotic pulps consists in eliminating the microorganisms spread throughout the ramifications of root canal system. This study, comprised by one manuscript, had the objective to evaluate the antiseptic efficacy of biomechanical preparation and a calcium hydroxide-paste in root canals of human primary teeth with necrotic pulp after trauma and to detect the microorganisms Fusobacterium nucleatum and black-pigmented bacilli in this teeth. According to stringent inclusion criteria, 18 primary teeth with necrotic pulp were selected. Bacterial samples were taken after crown access (S1) and 72h after the removal of dressing with a calcium hydroxide paste (S3), but to 10 teeth were taken a other bacterial sample after chemomechanical preparation with 0.5% NaOCl as an irrigant (S2). Bacteriological samples were collected by introducing 3 sequential sterile absorbent paper points, of a size visually compatible with the root canal diameter. After approximately 1 min, the paper points were removed and placed in a test tube containing reduced transport fluid and were sent for microbiological evaluation. In the S1, the microorganisms were found in 7/18 (94,4%) of the samples, with a colony forming units (CFU’s) media of 5.4 x 105. In the S2, bacteria were cultured in only 1/10 (10%) root canal, with the CFU’s media of 4.3 x 102, and in the S3 bacteria were cultured in 15/18 (83.3%), with the CFU’s media of 1.5 x 105. A statistically significant reduction in bacterial counts was observed between S1 and S2, however no statistically significant difference was observed for comparisons involving S1 and S3, and S2 and S3. The microorganisms Fusobacterium nucleatum and black-pigmented bacilli were detected in 55.5% (10/18) and 11.1% (2/18), respectively, in the S1, no were found in the S2, and in the S3 were found in 16.6% (3/18) and 5.5% (1/18), respectively. In the S1, the gram-negative cocci (15/18) and gram-negative rods (14/18) were the most prevalent groups (83.3% and 77.8%, respectively). In the S2, the gram-positive cocci was the only group of the bacteria observed (1/10), and in the S3, the gram-positive cocci was the group most commonly recovered (66.7%). It was conclude that biomechanical preparation were important in the antisepsis of the root canal because reduced significantly the number of bacteria in the main canal however the calcium hydroxide paste had a antibacterial efficacy limited, no prevent the regrowing bacterial after used as dressing intracanal.
publishDate 2008
dc.date.none.fl_str_mv 2008
2012-02-01T12:46:35Z
2012-02-01T12:46:35Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv SOUSA, D. L. de. Efeito antibacteriano do preparo biomecânico e de uma pasta à base de hidróxido de cálcio sobre bactérias presentes em canais radiculares de dentes decíduos necrosados após trauma. 2008. 40 f. Dissertação (Mestrado em Odontologia) - Universidade Federal do Ceará. Faculdade de Farmácia, Odontologia e Enfermagem, Fortaleza, 2008.
http://www.repositorio.ufc.br/handle/riufc/1724
identifier_str_mv SOUSA, D. L. de. Efeito antibacteriano do preparo biomecânico e de uma pasta à base de hidróxido de cálcio sobre bactérias presentes em canais radiculares de dentes decíduos necrosados após trauma. 2008. 40 f. Dissertação (Mestrado em Odontologia) - Universidade Federal do Ceará. Faculdade de Farmácia, Odontologia e Enfermagem, Fortaleza, 2008.
url http://www.repositorio.ufc.br/handle/riufc/1724
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dc.source.none.fl_str_mv reponame:Repositório Institucional da Universidade Federal do Ceará (UFC)
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repository.name.fl_str_mv Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)
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