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Soft tissue histomorphology at implants with a transmucosal modified surface. A study in minipigs
Antonio Liñares1, Fernando Muñoz2, María Permuy2
1Periodontology Unit, School of Medicine and Dentistry, University of Santiago de Compostela, Santiago de Compostela, Spain.
Clinical Oral Implants Research
|July 28, 2015
Summary
Modified implant collar surfaces on titanium (Ti) and titanium-zirconium (TiZr) implants showed similar soft tissue integration compared to machined surfaces. Modified surfaces demonstrated a trend towards increased perpendicular collagen fibers and improved connective tissue contact for dental implants.
Area of Science:
- Dental Implantology
- Biomaterials Science
- Histomorphology
Background:
- The transgingival collar surface of dental implants plays a crucial role in soft tissue integration and stability.
- Understanding the histomorphological and qualitative aspects of soft tissue around modified implant collars is essential for optimizing clinical outcomes.
Purpose of the Study:
- To compare the soft tissue histomorphology and quality around dental implants with modified transgingival collar surfaces versus machined surfaces.
- To evaluate the influence of different surface modifications (Ti modSLA, TiZr modSLA) on soft tissue attachment and inflammatory response.
Main Methods:
- Twenty-seven Straumann Standard Tissue Level implants of three types (Ti-M, Ti-modMA, TiZr-modMA) were placed in minipig mandibles.
- After 8 weeks of healing, buccal sections were obtained for histological evaluation of soft tissue parameters.
Main Results:
- Soft tissue outcomes were comparable across all three implant groups.
- Implants with modified acid-etched collars (TiZr-modMA) showed a longer connective tissue attachment length compared to machined collars (Ti-M).
- Modified surfaces exhibited a higher percentage of perpendicular collagen fibers and a trend towards increased connective tissue contact.
Conclusions:
- Modified implant collar surfaces on Ti and TiZr implants provide a soft tissue interface comparable to machined surfaces.
- Modified surfaces show a tendency for increased perpendicular collagen fibers and enhanced connective tissue contact, suggesting potential benefits for soft tissue integration.
