dc.creatorNASCIMENTO, Cassio do
dc.creatorPEDRAZZI, Vinicius
dc.creatorMIANI, Paola Kirsten
dc.creatorMOREIRA, Larissa Daher
dc.creatorALBUQUERQUE JUNIOR, Rubens Ferreira de
dc.date.accessioned2012-10-20T01:20:23Z
dc.date.accessioned2018-07-04T15:26:38Z
dc.date.available2012-10-20T01:20:23Z
dc.date.available2018-07-04T15:26:38Z
dc.date.created2012-10-20T01:20:23Z
dc.date.issued2009
dc.identifierCLINICAL ORAL IMPLANTS RESEARCH, v.20, n.12, p.1394-1397, 2009
dc.identifier0905-7161
dc.identifierhttp://producao.usp.br/handle/BDPI/26364
dc.identifier10.1111/j.1600-0501.2009.01769.x
dc.identifierhttp://dx.doi.org/10.1111/j.1600-0501.2009.01769.x
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1623028
dc.description.abstractObjectives Bacterial penetration along the implant-abutment interface as a consequence of abutment screw loosening has been reported in a number of recent studies. The aim of this in vitro study was to investigate the influence of repeated tightening of the abutment screw on leakage of Streptococcus mutans along the interface between implants and pre-machined abutments. Materials and methods Twenty pre-machined abutments with a plastic sleeve were used. The abutment screws were tightened to 32 N cm in group 1 (n=10 - control) and to 32 N cm, loosened and re-tightened with the same torque twice in group 2 (n=10). The assemblies were completely immersed in 5 ml of Tryptic Soy Broth medium inoculated with S. mutans and incubated for 14 days. After this period, contamination of the implant internal threaded chamber was evaluated using the DNA Checkerboard method. Results Microorganisms were found on the internal surfaces of both groups evaluated. However, bacterial counts in group 2 were significantly higher than that in the control group (P < 0.05). Conclusion These results suggest that bacterial leakage between implants and abutments occurs even under unloaded conditions and at a higher intensity when the abutment screw is tightened and loosened repeatedly. To cite this article:do Nascimento C, Pedrazzi V, Kirsten Miani P, Daher Moreira L, de Albuquerque Junior RF. Influence of repeated screw tightening on bacterial leakage along the implant-abutment interface.Clin. Oral Impl. Res. 20, 2009; 1394-1397.doi: 10.1111/j.1600-0501.2009.01769.x.
dc.languageeng
dc.publisherWILEY-BLACKWELL PUBLISHING, INC
dc.relationClinical Oral Implants Research
dc.rightsCopyright WILEY-BLACKWELL PUBLISHING, INC
dc.rightsrestrictedAccess
dc.subjectabutment screws
dc.subjectbacterial leakage
dc.subjectdental implants
dc.subjectDNA Checkerboard
dc.titleInfluence of repeated screw tightening on bacterial leakage along the implant-abutment interface
dc.typeArtículos de revistas


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