Effectiveness of implant surface decontamination using a high-pressure sodium bicarbonate protocol: an in vitro study.

Objectives: To evaluate the effectiveness of a high-pressure sodium bicarbonate spray protocol to decontaminate implant surfaces intentionally inoculated with bacteria.

Materials And Methods: Twenty commercially pure titanium implants, 10 with machined surfaces and 10 with rough surfaces, were inoculated with Streptococcus sanguis and then submitted to a decontamination protocol using a high-pressure sodium bicarbonate spray device for 1 minute under aseptic conditions.

Results: After the application of the decontamination protocol, all bacterial cells were removed from the tested implants, regardless of surface roughness.

Evaluation of implant-abutment microgap and bacterial leakage in five external-hex implant systems: an in vitro study.

Purpose: The aim of the present study was to verify the presence of a microgap between implants and prosthetic abutments on their external surfaces in five different external-hex implant systems and to determine whether bacterial leakage occurs through the implant-abutment (I-A) interface.

Materials And Methods: Ten samples of each implant system were used. Eight samples of each implant system were inoculated with 0.

Influence of titanium surface roughness on attachment of Streptococcus sanguis: an in vitro study.

The purpose of the present study was to investigate the efficacy of the decontamination protocol for bacterial removal in titanium surfaces with three different levels of roughness using a high-pressure sodium bicarbonate device for 1 minute under aseptic conditions. Group 1 was composed of 10 as-machined titanium sheets and Groups 2 and 3 of titanium sheets blasted with aluminum oxide (Al2O3, alumina) particles with different diameters: Group 2 was blasted with 65-microm particles and Group 3 with 250-microm particles. The titanium specimens were sterilized and incubated in tubes containing a suspension of Streptococcus sanguis.