Digital Approach, Innovation and Development of New Ceramic-Based Restorative Materials in Dentistry

A special issue of Ceramics (ISSN 2571-6131).

Deadline for manuscript submissions: closed (15 April 2023) | Viewed by 2973

Special Issue Editors

Special Issue Information

Dear Colleagues,

In recent years, the widespread use of adhesive prostheses has allowed and encouraged important developments in prosthetic and restorative materials. Furthermore, the diffusion of the digital workflow has encouraged research on monolithic milling materials, which are perfectly suited to this kind of workflow.
To overcome the aesthetic and functional limits of these materials, it is sometimes necessary to resort to layering or bonding other materials to them.

As of now, a large amount of research is required to confirm the reliability and clinical use of these materials.

The development of resins, both as cements and as long-term prosthetic materials that can be micro- and nano-filled with aesthetic and functional fibers or particles have allowed these materials to achieve results that were unexpected up until now.

The resistance of zirconia, in association with the ever-improving aesthetic management techniques, thanks to micro-infiltrations and super-color painting, has allowed this material to quickly become one of the most used.

Lithium disilicate is one of the most aesthetic materials and has excellent resistance and great adhesive capacity.

However, in this metal-free era, we must not forget about Cr-Co rehabilitations, which are perfectly adaptable to the digital flow, and as a prosthetic sub-structure, titanium is useful for supporting highly aesthetic materials.

It is important to pay attention to the increasingly used endo-osseous implants made of zirconia, which are capable of guaranteeing aesthetic results that are clearly superior to titanium implants, as metal components are not visible in their structure.

For my part, I invite clinicians to report their experiences using these new materials, new techniques, and digital workflows, suggesting critical comparisons with the previous generation of materials and rehabilitation techniques.

I also invite researchers to propose studies on the strength, thickness, and characteristics that clinicians must pay attention to in order to maintain the best working conditions for these materials.

Original articles, case reports, case series, and reviews in the field of imaging that aim to enrich scientific knowledge and to help not only clinicians, but also researchers involved in the development of new dedicated software, diagnostic instruments, and technological improvements, are warmly welcome.

Dr. Rodolfo Reda
Dr. Alessio Zanza
Guest Editors

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Keywords

  • zirconia
  • Cr-Co
  • ceramics
  • lithium disilicate
  • metal
  • resin
  • digital impression
  • digital workflow milling
  • laser-synth
  • aesthetics

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Published Papers (1 paper)

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12 pages, 21504 KiB  
Article
Comparative Fracture Resistance Analysis of Translucent Monolithic Zirconia Dioxide Milled in a CAD/CAM System
by Cristian Abad-Coronel, Ángeles Paladines, Ana Liz Ulloa, César A. Paltán and Jorge I. Fajardo
Ceramics 2023, 6(2), 1179-1190; https://doi.org/10.3390/ceramics6020071 - 31 May 2023
Cited by 4 | Viewed by 2458
Abstract
The aim of this study was to evaluate and compare the fracture resistance of definitive zirconia dioxide restorations obtained using a computer-aided design and manufacturing (CAD/CAM) system. Methods: Two groups of ten samples were analyzed for each material (n: 20); the first group [...] Read more.
The aim of this study was to evaluate and compare the fracture resistance of definitive zirconia dioxide restorations obtained using a computer-aided design and manufacturing (CAD/CAM) system. Methods: Two groups of ten samples were analyzed for each material (n: 20); the first group was Zolid Gen X Amann Girrbach (ZGX) and the second group was Cercon HT Dentsply Sirona (CDS). The restorations were designed with identical parameters and milled with a CAD/CAM system. Each specimen was load tested at a speed of 0.5 mm/min, with a direction parallel to the major axis of the tooth and with an initial preload of 10 N until fracture using a universal testing machine (Universal/Tensile Testing Machine, Autograph AGS-X Series) equipped with a 20 kN load cell. The results obtained were recorded in Newtons (N), using software connected to the testing machine. Results: Statistically significant differences were found, and the fracture resistance of the monolithic zirconia crowns was lower in the CDS group (1744.84 ± 172.8 N) compared to the ZGX group (2387.41 ± 516 N). Conclusions: The monolithic zirconia CAD-CAM zirconia crowns showed sufficient fracture resistance when used in posterior molar and premolar zones with either material, as they withstood fracture loads greater than the maximum masticatory force. Full article
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