相关实验视频

Updated: Jan 28, 2026

3D Printing - Evaluating Particle Emissions of a 3D Printing Pen
06:44

3D Printing - Evaluating Particle Emissions of a 3D Printing Pen

Published on: October 9, 2020

9.1K

在模拟口腔条件下加速和化学衰老后,对3D打印的PMMA表面和机械行为的体外评估

Vlad-Gabriel Vasilescu1, Robert Cătălin Ciocoiu2, Andreea Mihaela Custură1

  • 1Discipline of Dental Prosthesis Technology, Faculty of Dentistry, "Carol Davila" University of Medicine and Pharmacy, Dionisie Lupu Street, No. 37, District 2, 020021 Bucharest, Romania.

Dentistry journal
|January 27, 2026
PubMed
概括

这项研究研究了模拟的唾液和口水如何影响3D打印临时牙科材料 (PMMA). 唾液的热老化比口水更严重地降低了其性能,影响了临时修复的机械可靠性.

关键词:
通过3D打印的PMMA.加快衰老的加速衰老.化学老化的化学老化机械性能 机械性能 机械性能暂时的牙科材料暂时的牙科材料.表面自由能量是自由的能量.热老化的热老化

更多相关视频

Multimodal 3D Printing of Phantoms to Simulate Biological Tissue05:11

Multimodal 3D Printing of Phantoms to Simulate Biological Tissue

Published on: January 11, 2020

8.0K
Development and Evaluation of 3D-Printed Cardiovascular Phantoms for Interventional Planning and Training09:57

Development and Evaluation of 3D-Printed Cardiovascular Phantoms for Interventional Planning and Training

Published on: January 18, 2021

4.6K

相关概念视频

Variation in Acceleration due to Gravity near the Earth's Surface01:20

Variation in Acceleration due to Gravity near the Earth's Surface

An object's apparent weight is its weight measured by a spring balance at its location. It is different from its true weight, the force with which the Earth pulls it, because of the Earth's rotation. Mathematically, an object's apparent weight equals its true weight minus the centripetal force that keeps it in a circular motion along with the Earth's surface every 24 hours.
The difference between the true and apparent weights is proportional to the square of the Earth's...
2.8K
Mechanical and Chemical Digestion in the Small Intestine01:30

Mechanical and Chemical Digestion in the Small Intestine

The small intestine plays a crucial role in our digestive system, performing both mechanical and chemical digestion.
Mechanical digestion in the small intestine involves movements such as segmentations and migrating motility complexes (MMCs), primarily controlled by the myenteric plexus. Segmentations are localized contractions occurring in areas of the intestine distended by chyme—a mixture of partially digested food. These contractions mix chyme with digestive juices, facilitating...
3.2K
Accelerators01:17

Accelerators

Accelerators in concrete serve as admixtures to speed up the hardening process, enabling the concrete to achieve early strength faster. Although accelerators do not necessarily impact the time it takes concrete to set, they reduce this time in practice. A common accelerator is calcium chloride, which is particularly useful for hastening early strength development in cold weather or for rapid repair jobs that require quick heat generation after mixing.
The effectiveness of calcium chloride can...
286
Accelerating Fluids01:17

Accelerating Fluids

When a fluid is in constant acceleration, the pressure and buoyant force equations are modified. Suppose a beaker is placed in an elevator accelerating upward with a constant acceleration, a. In the beaker, assume there is a thin cylinder of height h with an infinitesimal cross-sectional area, ΔS.
The motion of the liquid within this infinitesimal cylinder is considered to obtain the pressure difference. Three vertical forces act on this liquid:
2.3K
Instantaneous Acceleration01:16

Instantaneous Acceleration

Acceleration is in the direction of the change in velocity, but it is not always in the direction of motion. When an object slows down, its acceleration is opposite to the direction of its motion. Although commonly referred to as deceleration, this causes confusion in our analysis as deceleration is not a vector, and does not point to a specific direction with respect to a coordinate system. Therefore, the term deceleration is not used. For example, when a subway train slows down, it...
23.1K
Acceleration Vectors01:30

Acceleration Vectors

In everyday conversation, accelerating means speeding up. Acceleration is a vector in the same direction as the change in velocity, Δv, therefore the greater the acceleration, the greater the change in velocity over a given time. Since velocity is a vector, it can change in magnitude, direction, or both. Thus acceleration is a change in speed or direction, or both. For example, if a runner traveling at 10 km/h due east slows to a stop, reverses direction, and continues their run at 10 km/h...
22.5K