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Polarized light microscopy of the peri-implant soft tissues: (A) longitudinal bundles distributed parallel to the surface of the abutment (yellow arrow) in the coronal portion, while in the apical portions—and far away from the implant surface—there was a lattice composed of interwoven bundles (white arrow); (B) the transverse section with the majority of semicircular collagen bundles (black arrow) around the abutment (acid fuchsin–toluidine blue 40×).
