Avalia??o da efic?cia dos m?todos de desinfec??o de pinos de fibra de vidro e sua influ?ncia na resist?ncia de uni?o

• Main Author: Nogueira, Camila de Oliveira Picado
• Other Authors: 01065593465
• Language: Portuguese
• Published: PROGRAMA DE P?S-GRADUA??O EM SA?DE COLETIVA 2017
• Subjects: CNPQ::CIENCIAS DA SAUDE::SAUDE COLETIVA; Pinos dent?rios; Desinfec??o; Adesividade
• Online Access: https://repositorio.ufrn.br/jspui/handle/123456789/23926

Submitted by Automa??o e Estat?stica ([e-mail]) on 2017-09-05T19:56:00Z No. of bitstreams: 1 CamilaDeOliveiraPicadoNogueira_DISSERT.pdf: 7007080 bytes, checksum: 1c9a1ad99f83d71e4351d1656e58c493 (MD5) === Approved for entry into archive by Arlan Eloi Leite Silva ([e-mail]) on 2017-09-15T23:31:49Z (GMT) No. of bitstreams: 1 CamilaDeOliveiraPicadoNogueira_DISSERT.pdf: 7007080 bytes, checksum: 1c9a1ad99f83d71e4351d1656e58c493 (MD5) === Made available in DSpace on 2017-09-15T23:31:49Z (GMT). No. of bitstreams: 1 CamilaDeOliveiraPicadoNogueira_DISSERT.pdf: 7007080 bytes, checksum: 1c9a1ad99f83d71e4351d1656e58c493 (MD5) 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.