Projects / Programmes
Research of dental ceramics
| Code |
Science |
Field |
Subfield |
| 2.04.01 |
Engineering sciences and technologies |
Materials science and technology |
Inorganic nonmetallic materials |
| Code |
Science |
Field |
| T153 |
Technological sciences |
Ceramic materials and powders |
| Code |
Science |
Field |
| 2.05 |
Engineering and Technology |
Materials engineering |
dental cearmics, tetragonal zirconia (Y-ZTP), ageing, adhesion, clinical trials
Researchers (15)
Organisations (2)
Abstract
This project proposal addresses some of emerging problems related to fabrication of tetragonal zirconia (Y-TZP) based all-ceramic fixed partial dentures (FPDs), their cementation as well as the performance of these FPDs under clinical conditions. The relationship between the composition, microstructure and the mechanical properties of Y-TZP ceramics will be studied, as well as the mechanisms and the kinetics of the reactions leading to a material’s degradation under thermal and mechanical cyclic loading in a chemically aggressive environment of the oral cavity. Also considered in the project are chemical reactions and physical phenomena contributing to adhesion of commonly used dental cements to the core material of all-ceramic FPDs, as well as those relevant to bonding between the ceramic core and the veneering porcelain. Yet another part of the project is aimed at developing new and/or substitute materials as well as developing novel dental ceramic technologies, such as, for example, moderately porous Y-TZP ceramics exhibiting substantially reduced elastic modulus similar to that of the dentin, and a sufficiently high strength for dental applications. Diminished elastic mismatch is expected to reduce the magnitude of the stresses developed at the margin of the tooth and the restoration and therefore the likelihood of marginal seal failure and the onset of secondary caries.
Significance for science
This present research program is up-to-date as the zirconia market for dental application is growing ever greater and any contribution to a more fundamental understanding of the material and its behavior in-vivo is expected to be well received in the scientific community. We hope to further develop our knowledge of the principles regulating fabrication of tetragonal zirconia (Y-TZP) based all-ceramic fixed partial dentures (FPDs), their cementation as well as the performance of these FPDs under clinical conditions. It is also expected that our results will foster similar research work at both the academic and industrial levels, which should ultimately extend the long-term survival rate of zirconia-based dental restorations. Clearly, this project has not only scientific but also clinical benefits. Thus, for example, the clinical aspects of the project will apply the above principles to enhance the adhesive bond strength of the luting agent without damaging the ceramic surface in a time- and cost-effective manner
Significance for the country
The results of the proposed research will undoubtedly improve the quality of prosthetic and orthodontic care for patients in the Republic of Slovenia. Partial edentulism is in addition to medical an enormous economic problem, since the cost of rehabilitation significantly charges the public health care budget. We believe that the results of the research work under the proposed project will be immediately transferred to clinical practice. Thus, the routine use of the nanostructured coatings will extend the lifetime of prosthetic products, which will reduce the relatively long waiting periods for prosthetic rehabilitation and in addition, will also lower the costs of prosthetic care. The project also contributes to education of young researchers. Three researchers from the project team are university professors and are giving courses in ceramic engineering and bio-materials at the Faculty of natural sciences and engineeringat, University of Ljubljana and Jožef Stefan International postgraduate school.
Most important scientific results
Annual report
2012,
2013,
final report,
complete report on dLib.si
Most important socioeconomically and culturally relevant results
Annual report
2011,
2012,
2013,
final report,
complete report on dLib.si
