Black particles found on glass plate from samples with titanium abutments.
A = swab from implant head and mucosa shows particle around 44 µm and round erythrocytes surrounding it.
B = swab from sample around implant mucosa before detachment of implant crown shows particles embedded in cell, around 18 and 26 µm in size.
C = swab from implant head/mucosa shows particle around 35 µm surrounded with different cells.