Adhesion and interfacial characterization of biomimetically texturized lithium disilicate

Journal article


Publication Details

Author(s): Zorzin J, Beck S, Belli R, Petschelt A, Boccaccini AR, Lohbauer U
Journal: International Journal of Adhesion and Adhesives
Publication year: 2019
Volume: 91
Pages range: 131-141
ISSN: 0143-7496


Abstract

Lithium disilicate glass-ceramic (LS2) can be biomimetically textured by crystal orientation, mimicking the microstructure of dental enamel and inducing anisotropic mechanical responses to crack growth. The deliberate texturization of LS2 plays to the clinical advantage of reinforcing weak sites of typical fracture initiation in dental prosthetic constructs. Similar to enamel, adhesion of biomimetically textured LS2 could also show anisotropic behavior. Therefore, tensile bond strength (TBS) before and after thermocycling (TC) and interfacial characterization of biomimetically textured LS2 (parallel (PAR) or perpendicular (PER) crystal orientation) after different pre-treatment modes (hydrofluoric acid etching (HFE), grit blasting (GBL) and self-etching glass-ceramic primer (SGP)) were investigated. TC reduced significantly TBS for all specimens except for GBL. Biomimetic textured LS2 after HFE showed anisotropic behavior regarding adhesion. Crystal orientation reduced TBS for the PER HFE specimens after TC significantly. In general, the TBS of HFE specimens was still higher or not significantly lower compared to other pre-treatment modes like GBL or SGP. For the GBL and SGP specimens, crystal orientation had no influence on TBS and interfacial characteristics. In contrast HFE specimens showed different interfacial characteristics depending if they were PAR or PER texturized. Based on these findings, HFE of biomimetic textured LS2 can be recommended. For bonding, the PAR orientation is recommended as its adhesion potential is less prone to degrade.


FAU Authors / FAU Editors

Belli, Renan Dr.
Zahnklinik 1 - Zahnerhaltung und Parodontologie
Boccaccini, Aldo R. Prof. Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)
Lohbauer, Ulrich Prof. Dr.
Medizinische Fakultät
Petschelt, Anselm Prof. Dr.
Lehrstuhl für Zahn-,Mund- und Kieferheilkunde, insbesondere Zahnerhaltung, Parodontologie und Kinderzahnheilkunde
Zorzin, José Dr.
Zahnklinik 1 - Zahnerhaltung und Parodontologie


How to cite

APA:
Zorzin, J., Beck, S., Belli, R., Petschelt, A., Boccaccini, A.R., & Lohbauer, U. (2019). Adhesion and interfacial characterization of biomimetically texturized lithium disilicate. International Journal of Adhesion and Adhesives, 91, 131-141. https://dx.doi.org/10.1016/j.ijadhadh.2019.03.012

MLA:
Zorzin, José, et al. "Adhesion and interfacial characterization of biomimetically texturized lithium disilicate." International Journal of Adhesion and Adhesives 91 (2019): 131-141.

BibTeX: 

Last updated on 2019-24-05 at 15:53