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Soft tissue histomorphology at implants with a transmucosal modified surface. A study in minipigs
Author(s) -
Liñares Antonio,
Muñoz Fernando,
Permuy María,
Dard Michel,
Blanco Juan
Publication year - 2015
Publication title -
clinical oral implants research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.407
H-Index - 161
eISSN - 1600-0501
pISSN - 0905-7161
DOI - 10.1111/clr.12417
Subject(s) - collar , materials science , connective tissue , implant , soft tissue , biomedical engineering , dentistry , medicine , surgery , pathology , mechanical engineering , engineering
Objectives To investigate soft tissue histomorphology and quality around implants with a modified transgingival collar surface comparatively to a machined. Material and methods Twenty‐seven S traumann S tandard T issue L evel implants belonging to the following groups (nine of each group): Ti mod SLA with machined collar ( T i‐ M ), T i mod SLA with machined, acid‐etched surface collar ( T i‐mod MA ), and T i Z r mod SLA with machined, acid‐etched surface collar ( T i Z r‐mod MA ) were placed in the mandible of six minipigs. After 8 weeks of healing, buccal sections were obtained and processed for histological evaluation. Results Histometric soft tissue outcomes were similar for the three types of implants. The percentage of connective tissue attached to implant surface and its length was longer at T i Z r‐mod MA with respect to T i‐ M implants. The number of inflammatory cells was slightly higher at the T i Z r‐mod MA with respect to T i‐ M implant. The percentage of area occupied by perpendicular collagen fibers was slightly higher for the modified surfaces in comparison with the machined. Conclusions Modified implant collar surfaces at T i and T i Z r implants showed a soft tissue interface similar to machined. A tendency of increasing number of perpendicular collagen fibers and improved connective tissue contact was found at the modified implant surfaces.