Author
Michael Wendler
Other affiliations: University of Concepción
Bio: Michael Wendler is an academic researcher from University of Erlangen-Nuremberg. The author has contributed to research in topics: Residual stress & Fracture toughness. The author has an hindex of 11, co-authored 15 publications receiving 822 citations. Previous affiliations of Michael Wendler include University of Concepción.
Papers
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TL;DR: Different methodologies are compared for the measurement of elastic constants and microstructural characterization of CAD/CAM restorative materials, showing to be complementary tools in the characterization of their crystal phases.
289 citations
TL;DR: Application of an etching step prior to UAs improves their dentine penetration, but does not affect their bond strength to dentine after 24h or after thermocycling for 5000 cycles.
244 citations
TL;DR: The B3B test has shown to be a reliable and simple method for determining the biaxial strength restorative materials supplied as small CAD/CAM blocks and the strength dependency on specimen size was demonstrated through the calculated effective volume/surface.
223 citations
TL;DR: Fatigue parameters obtained from cyclic loading experiments are more reliable predictors of the mechanical performance of contemporary dental CAD/CAM restoratives than quasi-static mechanical properties.
70 citations
TL;DR: This review goes through some fundamentals of the fracture mechanics concepts that are relevant to the understanding of fracture toughness testing, and draws attention to critical aspects of practical nature that must be fulfilled for validity and accuracy in results.
62 citations
Cited by
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TL;DR: The enamel bond strength of universal adhesives is improved with prior phosphoric acid etching, however, this effect was not evident for dentin with the use of mild universalAdhesives with the etch-and-rinse strategy.
400 citations
TL;DR: The present study examined the short-term in vitro performance of five universal adhesives bonded to human coronal dentine, showing the increase in versatility of universalAdhesives is not accompanied by technological advances for overcoming the challenges associated with previous generations of adhesive.
252 citations
TL;DR: The B3B test has shown to be a reliable and simple method for determining the biaxial strength restorative materials supplied as small CAD/CAM blocks and the strength dependency on specimen size was demonstrated through the calculated effective volume/surface.
223 citations
TL;DR: Dental ceramics and processing technologies have evolved significantly in the past ten years, with most of the evolution being related to new microstructures and CAD-CAM methods.
Abstract: The evolution of computerized systems for the production of dental restorations associated to the development of novel microstructures for ceramic materials has caused an important change in the clinical workflow for dentists and technicians, as well as in the treatment options offered to patients. New microstructures have also been developed by the industry in order to offer ceramic and composite materials with optimized properties, i.e., good mechanical properties, appropriate wear behavior and acceptable aesthetic characteristics. The objective of this literature review is to discuss the main advantages and disadvantages of the new ceramic systems and processing methods. The manuscript is divided in five parts: I) monolithic zirconia restorations; II) multilayered dental prostheses; III) new glass-ceramics; IV) polymer infiltrated ceramics; and V) novel processing technologies. Dental ceramics and processing technologies have evolved significantly in the past ten years, with most of the evolution being related to new microstructures and CAD-CAM methods. In addition, a trend towards the use of monolithic restorations has changed the way clinicians produce all-ceramic dental prostheses, since the more aesthetic multilayered restorations unfortunately are more prone to chipping or delamination. Composite materials processed via CAD-CAM have become an interesting option, as they have intermediate properties between ceramics and polymers and are more easily milled and polished.
192 citations
TL;DR: More evidence from long-term clinical studies is needed to verify the clinical performance of monolithic polymer-infiltrated ceramic network and zirconia teeth-supported minimally invasive and extensive restorations.
Abstract: Advances in computer-aided design (CAD) / computer-aided manufacturing (CAM) technologies and their ease of application enabled the development of novel treatment concepts for modern prosthodontics. This recent paradigm shift in fixed prosthodontics from traditional to minimally invasive treatment approaches is evidenced by the clinical long-term success of bonded CAD/CAM glass-ceramic restorations. Today, defect-oriented restorations, such as inlays, onlays, and posterior crowns, are predominately fabricated from glass-ceramics in monolithic application. The variety of CAD/CAM ceramic restorative systems is constantly evolving to meet the increased demands for highly aesthetic, biocompatible, and long-lasting restorations. Recently introduced polymer-infiltrated ceramic network CAD/CAM blocks add innovative treatment options in CAD/CAM chairside 1-visit restorations. The material-specific high-edge stability enables the CAD/CAM machinability of thin restoration margins. Full-contour zirconia restorations are constantly gaining market share at the expense of bilayered systems. Advancements in material science and bonding protocols foster the development of novel material combinations or fabrication techniques of proven high-strength zirconia ceramics. CAD/CAM applications offer a standardized manufacturing process resulting in a reliable, predictable, and economic workflow for individual and complex teeth-supported restorations. More evidence from long-term clinical studies is needed to verify the clinical performance of monolithic polymer-infiltrated ceramic network and zirconia teeth-supported minimally invasive and extensive restorations.
191 citations