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Artigo Acesso aberto Produção Nacional
BIBTEX RIS

Influence of mechanical cycling in the microbiological seal and microgaps in tapered connection implants

2019; International Network for Scientific Information Publication; Linguagem: Inglês

10.22587/ajbas.2019.13.8.7

ISSN

2309-8414

Autores

Benedito Damasceno, Ferreira Neto, Elizabeth Ferreira Martinez, Cristina Peruzzo, Júlio César Joly, FabianaMantovani Gomes França, Marcelo Henrique Napimoga, Faculdade São, Leopoldo Mandic,

Tópico(s)

Dental materials and restorations

Resumo

Background: This study evaluated the bacterial seal and adaptation of the abutments in a tapered connection implant system (Titaoss, Intraoss, Brazil) by means of microbiological and morphological analysis after cyclic loading.Objectives: The hypothesis of the study was to evaluate if after cycling the adaptation between abutment and implant creates gap allowing the passage of microorganisms.Methods: Twelve implants and their respective prosthetic abutments/crowns were fixed with a screw under torque of 20N.cm.The gap between the abutment and the implant was measured after the initial torque with the aid of a stereomicroscope and then subjected to compressive loads of 120 N and 2 Hz.After cycling, a new microgap measurement was performed and the samples were immersed in Escherichia coli suspension and incubated at 37°C.After 14 days, the prosthetic abutments were separated from the respective implants, and the presence of bacterial infiltration was evaluated.For the statistical calculations, the Student t test, binomial and G tests were used at a significance level of 5%.Results: The results showed that the specimens submitted to compressive load showed significantly smaller microgaps between the abutment and implant significantly than the non-cycled samples (p = 0.032).There was no significant difference in bacterial leakage in the implant models studied, regardless of mechanical cycling (p = 0.296).Conclusion: The tapered connection implant system used showed an effective bacterial seal, regardless of mechanical cycling.

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