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Previous issue date: 2017-02-17 / Este trabalho objetivou avaliar a efic?cia dos m?todos de desinfec??o na descontamina??o
de pinos de fibra de vidro, bem como sua influ?ncia na resist?ncia de uni?o dos pinos ao
canal radicular. Foram utilizados 64 pinos de fibra de vidro, sendo 32 deles do tipo
serrilhado e 32 do tipo liso. Estes foram submersos em solu??o contendo 5mL de
suspens?o de E. faecalis durante 1 hora. Foram divididos em 8 grupos (n=8), sendo 4
grupos compostos por pinos do tipo serrilhado e 4 por pinos lisos, cada grupo permaneceu
por 5 minutos em seus respectivos agentes de desinfec??o (clorexidina 2%, ?cido
fosf?rico 35% e ?lcool 70%), com exce??o dos grupos controles. Posteriormente, foi
determinado o n?mero de unidades formadoras de col?nia por mililitro (UFC/mL) de E.
faecalis. Ap?s esta etapa, os pinos foram cimentados em 64 ra?zes bovinas. Ap?s 7 dias
da cimenta??o, as ra?zes foram seccionadas perpendicularmente ao longo eixo, e os
esp?cimes foram submetidos ao teste de resist?ncia de uni?o (push-out). Foi realizado o
m?todo estat?stico Anova 2 fatores e p?s-teste de Tukey para an?lise dos resultados
obtidos. As an?lises das UFC/mL n?o apresentaram crescimento/desenvolvimento de
col?nias de E. faecalis para os grupos experimentais. A avalia??o da resist?ncia de uni?o,
levando em considera??o o fator tipo de pino, apresentou diferen?a estat?stica
significativa (p<0,05) apenas nos grupos controle e ?lcool onde o pino do tipo liso
mostrou melhores resultados. N?o houve diferen?a estat?stica significativa (p<0,05) no
grupo dos pinos serrilhados. As subst?ncias antimicrobianas testadas foram eficazes na
elimina??o de col?nias do E. faecalis. O ?lcool 70% apresentou melhores resultados de
resist?ncia de uni?o quando comparados as demais subst?ncias testadas e aos grupos
controles. / The purpose of this study was to evaluate which disinfection method was more effective
on the decontamination of fiberglass posts, and to observe if these methods influence on
the bond strength between the post to the root canal. Sixty-four fiberglass posts were used,
being 32 serrated type, and 32 smooth type. They were submersed in solution containing
5mL of E. faecalis suspension during one hour. Then, were divided in 8 groups (n=8),
being 4 groups composed by posts serrated type, and 4 groups composed by posts smooth
type, each group remained for 5 minutes in its respective disinfection agents
(Chlorhexidine 2%, phosphoric acid 35%, and alcohol 70%), with the exception of the
control groups. Afterwards, the number of colony forming units per milliliter (UFC/mL)
of E. faecalis was determined. Then, the posts were cemented in 64 bovine roots. Passed
7 days of cementation, the roots were sectioned perpendicular to the long axis, and the
specimens were submitted to the adhesive resistance test (push-out). Anova 2 factors and
Tukey post test were used as statistical method to analysis of the results obtained. The
UFC/mL analysis did not present any growing/development of E. faecalis colonies at the
experimental groups. The evaluation of bond strength, considering the post type,
presented significant statistical difference (p<0,05) only on control and alcohol groups,
in which the smooth type post showed greater results. There was not any significant
statistical difference (p<0,05) on the group of serrated posts. The antimicrobial substances
tested were effective at the elimination of E. faecalis colonies. Alcohol 70% presented
greater bond strength results when compared to the others tested substances and control
groups.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/23926 |
| Date | 17 February 2017 |
| Creators | Nogueira, Camila de Oliveira Picado |
| Contributors | 01065593465, Assun??o, Isauremi Vieira de, 66427983415, Pereira, Brunna Moreira de Farias, 06160833430, Caldas, Marilia Regalado Galv?o Rabelo |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM SA?DE COLETIVA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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