Soft Tissue Response to Titanium Abutments with Different Surface Treatment: Preliminary Histologic Report of a Randomized Controlled Trial

Figure 2

Soft tissue around healing abutment. Histological evaluation of soft tissue surrounding no conditioned abutments, customized by laboratory procedures and cleaned by steam (Steam Group). (a) Low magnification view of a pocket epithelium, revealing minimal acute and chronic infiltrate, diffuse collagenization bands, and pseudoepitheliomatous hyperplasia due to chronic trauma and characterized by multiple layers of keratinocytes with hyper- and orthokeratosis (×100, acid fuchsine and toluidine blue staining). (b) Representative histological image showing absence of acute infiltrate, minimal chronic infiltrate, and presence of collagenization bands (×100, acid fuchsine and toluidine blue staining).

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