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Gingival fibroblast response to (hybrid) ceramic implant reconstruction surfaces is modulated by biomaterial type and surface treatment
University of Freiburg, Germany.
University of Freiburg, Germany.
University of Freiburg, Germany.
University of Freiburg, Germany.
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2024 (English)In: Dental Materials, ISSN 0109-5641, E-ISSN 1879-0097, Vol. 40, no 4, p. 689-699Article in journal (Refereed) Published
Abstract [en]

Objectives: Surface characteristics of implant reconstructions determine the gingival fibroblast (GF) response and thus soft tissue integration (STI). However, for monolithic implant reconstructions it is unknown whether the (hybrid) ceramic biomaterial type and its surface treatment affect GF response. Therefore, this investigation examined the influence of the implant reconstruction biomaterials hybrid ceramic (HC), lithium disilicate ceramic (LS), 4 and 5 mol% yttria partially stabilized zirconiumdioxide ceramics (4/5Y-PSZ) and their surface treatment - machining, polishing or glazing - on surface characteristics and GF response. Methods: After characterization of surface topography and wettability by scanning electron microscopy, interferometry and contact angle measurement, the adhesion, morphology, metabolic activity and proliferation of GFs from six donors was investigated by fluorescent staining and a resazurin-based assay at days 1, 3 and 7. Titanium (Ti) served as control. Results: Biomaterial type and surface treatment affected the GF response in a topography-dependent manner. Smooth polished and glazed surfaces demonstrated enhanced GF adhesion and earlier proliferation onset compared to rough machined surfaces. Due to minor differences in surface topography of polished and glazed surfaces, however, the GF response was similar for polished and glazed HC, LS, 4- and 5Y-PSZ as well as Ti. Significance: Within the limits of the present investigation, polishing and glazing of machined HC, LS and 4/5Y-PSZ can be recommended to support STI-relevant cell functions in GF. Since the GF response on polished and glazed HC, LS, 4- and 5Y-PSZ surfaces and the Ti control was comparable, this investigation proofed equal cytocompatibility of these surfaces in vitro. © 2024 The Authors

Place, publisher, year, edition, pages
Elsevier Inc. , 2024. Vol. 40, no 4, p. 689-699
Keywords [en]
Adhesion; Cell culture; Contact angle; Dental prostheses; Fibroblasts; Lithium compounds; Polishing; Repair; Scanning electron microscopy; Surface topography; Tissue; Topography; Yttrium oxide; Cad/cams; Ceramic; Fibroblast response; Gingival fibroblasts; Hybrid ceramics; Lithium disilicate; Soft tissue; Soft tissue integration; Tissue integration; Titania; Zirconia
National Category
Medical Biotechnology
Identifiers
URN: urn:nbn:se:ri:diva-72820DOI: 10.1016/j.dental.2024.02.018Scopus ID: 2-s2.0-85186084744OAI: oai:DiVA.org:ri-72820DiVA, id: diva2:1857825
Note

This work was funded by the German Society for Prosthetic Dentistry and Biomaterials (DGPro) and the Berta-Ottenstein-Program for Advanced Clinician Scientists, Faculty of Medicine, University of Freiburg 

Available from: 2024-05-14 Created: 2024-05-14 Last updated: 2024-05-14Bibliographically approved

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Adolfsson, Erik

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