Volume 26, Issue 9 pp. 996-1005
Novel Development

Soft tissue histomorphology at implants with a transmucosal modified surface. A study in minipigs

Antonio Liñares

Corresponding Author

Antonio Liñares

Periodontology Unit, School of Medicine and Dentistry, University of Santiago de Compostela, Santiago de Compostela, Spain

Corresponding author:

Dr. Antonio Liñares

Periodontology Unit

School of Medicine and Dentistry

University of Santiago de Compostela

Rúa San Francisco

s/n 15782 Santiago de Compostela

Spain

Tel.: +34 62 649 2454

Fax: +34 981 571826

e-mail: [email protected]

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Fernando Muñoz

Fernando Muñoz

Department of Veterinary Clinical Sciences, University of Santiago de Compostela, Lugo, Spain

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María Permuy

María Permuy

Department of Veterinary Clinical Sciences, University of Santiago de Compostela, Lugo, Spain

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Michel Dard

Michel Dard

Department of Periodontology and Implant Dentistry, College of Dentistry, New York University, New York, NY, USA

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Juan Blanco

Juan Blanco

Periodontology Unit, School of Medicine and Dentistry, University of Santiago de Compostela, Santiago de Compostela, Spain

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First published: 21 May 2014
Citations: 18

Abstract

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 Straumann Standard Tissue Level implants belonging to the following groups (nine of each group): Ti modSLA with machined collar (Ti-M), Ti modSLA with machined, acid-etched surface collar (Ti-modMA), and TiZr modSLA with machined, acid-etched surface collar (TiZr-modMA) 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 TiZr-modMA with respect to Ti-M implants. The number of inflammatory cells was slightly higher at the TiZr-modMA with respect to Ti-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 Ti and TiZr 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.

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