Biocompatible Inorganic PVD MeSiON Thin Films (Me = Cr or Zr) Used to Enhance the Bond Strength Between NiCr-Based Metallic Frameworks and Ceramic in Dental Restorations
Mihaela Dinu, Cosmin Mihai Cotrut, Alina Vladescu (Dragomir), Florin Baciu, Anca Constantina Parau, Iulian Pana, Lidia Ruxandra Constantin, Catalin Vitelaru
TL;DR
This paper explores using biocompatible MeSiON thin films to strengthen the bond between metal and ceramic in dental restorations.
Contribution
The study introduces biocompatible inorganic MeSiON thin films as interlayers to enhance bond strength in dental restorations.
Findings
ZrSiON coatings showed better roughness and adhesion than Cr-based coatings.
The highest bond strength was achieved with ZrSiON deposited at −200 V due to increased surface roughness and interlocking.
Modifications in coating stoichiometry and roughness significantly improved ceramic-to-metal adhesion.
Abstract
Background/Objectives: The increasing demand for aesthetics in dentistry has driven significant advancements in both materials and techniques. The primary cause of ceramic detachment in dental restorations is extensive mechanical stress, which often results in detachment and clinical complications. This study aims to improve the bond strength between NiCr-based metal frameworks and ceramic coatings by introducing biocompatible inorganic MeSiON thin films (Me = Cr or Zr) as interlayers. Methods: MeSiON coatings with a thickness of ~2 μm were deposited on NiCr alloy using cathodic arc evaporation. To tailor the stoichiometry, morphology, and mechanical properties of the coatings, the substrate bias voltage was varied: −50 V, −100 V, −150 V, −200 V. Structural and surface characterization was performed using SEM/EDS, XRD, profilometry, and contact angle analysis. The coating adhesion was…
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Taxonomy
TopicsAdvanced materials and composites · Dental materials and restorations · Bone Tissue Engineering Materials