Soft Tissue Integration of Different Abutment Surfaces

abutments allocated to the test group were placed in an Argon plasma reactor (Diener Electronic GmbH, Jettingen, Germany) for decontamination and activation. In order to restrict any post-treatment contamination; abutments were inserted immediately after the end of the plasma process. The reactor was set at 75 W of power and -10 MPa of pressure for 12 min.

the abutments assigned to the control group were screwed onto the implants without receiving argon plasma pretreatment