An in vitro investigation concerning the bacterial leakage at implants with internal hexagon and Morse taper implant-abutment connections.

Abstract:

PURPOSE:To evaluate, in vitro, the leakage observed in internal hexagon and Morse taper implant-abutment connections. MATERIALS:Ten specimens with internal hexagon and 10 with Cone Morse connection were used. The inner parts of 5 implants, per group, were inoculated with Pseudomonas aeruginosa (PS) suspension and 5 implants, per group, with Aggregatibacter actinomycetemcomitans (AA). The penetration of bacterial suspension into the surrounding solution was determined by observation of turbidity of the broth. RESULTS:In the internal hexagon implants, bacterial contamination was found in 2 of 5 implant-abutment assemblies seeded with the PS, and in the assemblies seeded with AA, the contamination was found in 3 samples, with a total of leaked assemblies in this group in 5 of 10. In the Cone Morse implants, bacterial contamination was found in 2 of 5 implant-abutment assemblies seeded with the PS, whereas in the assemblies seeded with AA, no contamination was found, with a total of leaked assemblies in 2 of 10. CONCLUSION:The data support a not significantly higher permeability to bacterial leakage and a lower infiltration rate of screw-retained abutment connections when compared to Cone Morse taper internal connections.

journal_name

Implant Dent

journal_title

Implant dentistry

authors

Tripodi D,Vantaggiato G,Scarano A,Perrotti V,Piattelli A,Iezzi G,DʼErcole S

doi

10.1097/ID.0b013e31825cd472

subject

Has Abstract

pub_date

2012-08-01 00:00:00

pages

335-9

issue

4

eissn

1056-6163

issn

1538-2982

pii

00008505-201208000-00016

journal_volume

21

pub_type

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