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Micro-leakage at the implant-abutment interface with different tightening torques in vitro
Silva-Neto, João Paulo da; Prudente, Marcel Santana; Carneiro, Thiago de Almeida Prado Naves; Nóbilo, Mauro Antônio de Arruda; Penatti, Mario Paulo Amante; Neves, Flávio Domingues das.
Afiliação
  • Silva-Neto, João Paulo da; Federal University of Uberlândia. School of Dentistry. Department of Fixed Prostheses, Occlusion and Dental Materials. Uberlândia. BR
  • Prudente, Marcel Santana; Federal University of Uberlândia. School of Dentistry. Department of Fixed Prostheses, Occlusion and Dental Materials. Uberlândia. BR
  • Carneiro, Thiago de Almeida Prado Naves; Federal University of Uberlândia. School of Dentistry. Department of Fixed Prostheses, Occlusion and Dental Materials. Uberlândia. BR
  • Nóbilo, Mauro Antônio de Arruda; University of Campinas. Piracicaba Dental School. Department of Prosthodontics and Periodontology. Campinas. BR
  • Penatti, Mario Paulo Amante; Federal University of Uberlândia. Technical School of Health. Uberlândia. BR
  • Neves, Flávio Domingues das; Federal University of Uberlândia. School of Dentistry. Department of Fixed Prostheses, Occlusion and Dental Materials. Uberlândia. BR
J. appl. oral sci ; J. appl. oral sci;20(5): 581-587, Sept.-Oct. 2012. ilus
Article em En | LILACS | ID: lil-654925
Biblioteca responsável: BR1.1
ABSTRACT

OBJECTIVES:

This study evaluated the microleakage at the implant/abutment interface of external hexagon (eH) implants and abutments with different amounts of bacteria and tightening torques. MATERIAL AND

METHODS:

A bacterial suspension was prepared to inoculate the implants. The first phase of this study used nine EH implants and abutments that were divided into three groups with different amounts of bacterial suspension (n=3) V0.5 0.5 µL; V1.0 1.0 µL e V1.5 1.5 µL, and tightened to the manufacturer's recommended torque. The second phase of this experiment used 27 assemblies that were similar to those used in the first phase. These samples were inoculated with 0.5 µL of bacterial suspension and divided into three groups (n=9). T10 10 Ncm; T20 20 Ncm and T32 32 Ncm. The samples were evaluated according to the turbidity of the broth every 24 hours for 14 days, and the bacteria viability was tested after that period. The statistical evaluation was conducted by Kruskal-Wallis testing (p<.05).

RESULTS:

During the first phase, groups V1.0 and V1.5 was presented with bacterial contamination in all samples after 24 h. During the second phase, two samples from group T10 and one from T20 presented positive results for bacterial contamination. Different amounts of bacterial solution led to overflow and contamination during the first 24 h of the experiment. The tightening torques did not statistically affect the microleakage in the assemblies. However, the group that was tightened to 32 Ncm torque did not show any bacterial contamination.

CONCLUSION:

After 14 days of experimentation, the bacteria were proven to remain viable inside the implant internal cavity.
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Texto completo: 1 Índice: LILACS Assunto principal: Implantes Dentários / Dente Suporte / Torque / Infiltração Dentária / Projeto do Implante Dentário-Pivô Tipo de estudo: Evaluation_studies Limite: Humans Idioma: En Revista: J. appl. oral sci Assunto da revista: ODONTOLOGIA Ano de publicação: 2012 Tipo de documento: Article

Texto completo: 1 Índice: LILACS Assunto principal: Implantes Dentários / Dente Suporte / Torque / Infiltração Dentária / Projeto do Implante Dentário-Pivô Tipo de estudo: Evaluation_studies Limite: Humans Idioma: En Revista: J. appl. oral sci Assunto da revista: ODONTOLOGIA Ano de publicação: 2012 Tipo de documento: Article