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Related Concept Videos

Veneer01:19

Veneer

Veneer refers to a thin sheet of wood, typically produced to a thickness of about one-eighth of an inch or less. This material is crafted through various methods, the most common being rotary cutting. In this process, a log is mounted into a large lathe and spun against a knife edge, peeling off a continuous strip of wood as the knife penetrates deeper into the rotating log, creating a rotary-cut veneer.
Other veneering techniques include plain-slicing, quarter-slicing, and rift-slicing. These...
Tooth Anatomy01:21

Tooth Anatomy

The human tooth enables us to eat a variety of foods, speak clearly, and even aid in shaping our faces. Teeth are composed of various elements that work together. Here's a detailed look at the anatomy of a human tooth.
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or grinding food.
Accelerated Curing of Concrete01:25

Accelerated Curing of Concrete

Accelerating concrete curing is achieved by applying heat and additional moisture. This process accelerates the hydration of the cement, resulting in an earlier strength gain in the concrete. Steam curing is a method wherein the concrete products are either transported through a chamber on a conveyor belt or encased in plastic, allowing steam at atmospheric pressure to circulate freely around them. This process begins with a phase of moist curing that typically lasts between 3 to 5 hours, after...
Electrodeposition01:08

Electrodeposition

Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...
Zener Diodes01:16

Zener Diodes

Zener diodes are specialized semiconductor devices designed to operate in the reverse breakdown region, where they allow current to flow into the cathode, making it positive relative to the anode. This reverse operation distinguishes Zener diodes from conventional diodes and enables their use in various applications, most notably as voltage regulators. One of the defining characteristics of Zener diodes is their nearly vertical I-V (current-voltage) characteristic curve above a certain...
Manufacture of Concrete Masonry Units01:27

Manufacture of Concrete Masonry Units

The process of manufacturing concrete masonry units begins by mixing stiff concrete composed of Portland cement, aggregates, and water. This mixture is then poured into metal molds. To ensure the concrete settles uniformly and to avoid separation of its components, the mixture in the molds is subjected to vibration. Shortly after, the still-wet blocks are removed from the molds and placed on racks.
These wet blocks are then transported for curing, which can occur in one of two environments: a...

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Related Experiment Video

Updated: Jun 6, 2026

Multi-material Ceramic-Based Components &#8211; Additive Manufacturing of Black-and-white Zirconia Components by Thermoplastic 3D-Printing (CerAM - T3DP)
08:29

Multi-material Ceramic-Based Components – Additive Manufacturing of Black-and-white Zirconia Components by Thermoplastic 3D-Printing (CerAM - T3DP)

Published on: January 7, 2019

Modified Y-TZP core design improves all-ceramic crown reliability.

N R F A Silva1, E A Bonfante, B T Rafferty

  • 1Department of Prosthodontics, New York University College of Dentistry, 345 24th St., 804S, New York, NY 10010, USA.

Journal of Dental Research
|November 9, 2010
PubMed
Summary
This summary is machine-generated.

Modified all-ceramic core-veneer dental crown designs demonstrate improved reliability. This research highlights enhanced durability for dental restorations through specific core design modifications, crucial for clinical success.

Related Experiment Videos

Last Updated: Jun 6, 2026

Multi-material Ceramic-Based Components &#8211; Additive Manufacturing of Black-and-white Zirconia Components by Thermoplastic 3D-Printing (CerAM - T3DP)
08:29

Multi-material Ceramic-Based Components – Additive Manufacturing of Black-and-white Zirconia Components by Thermoplastic 3D-Printing (CerAM - T3DP)

Published on: January 7, 2019

Area of Science:

  • Dental Materials Science
  • Biomaterials Engineering
  • Prosthodontics

Background:

  • All-ceramic core-veneer systems are widely used for dental restorations.
  • Crown reliability is a critical factor for long-term clinical success.
  • Core design modifications may influence the mechanical performance of these restorations.

Purpose of the Study:

  • To test the hypothesis that modifying all-ceramic core-veneer system crown design enhances reliability.
  • To compare the reliability of standard versus modified core designs under mechanical loading.
  • To investigate the effect of core design on fracture modes in all-ceramic crowns.

Main Methods:

  • Tooth preparation was modeled with reduced proximal wall height and occlusal surface.
  • Standard (0.5 mm uniform thickness) and modified (2.5 mm lingual/proximal cervical areas) core designs were fabricated using CAD.
  • Crowns were cemented to composite dies and subjected to single-load-to-failure and accelerated fatigue testing.

Main Results:

  • Level probability plots indicated significantly higher reliability for the modified core design group.
  • Standard crowns exhibited veneer chipping without core exposure.
  • Modified crowns showed fracture exposing the veneer-core interface, suggesting altered failure mechanisms.

Conclusions:

  • Modification of the all-ceramic core design significantly improves crown reliability.
  • The modified core design alters fracture modes, potentially enhancing overall restoration durability.
  • These findings have implications for the clinical application and longevity of all-ceramic dental crowns.