Related Experiment Video
Updated: Feb 6, 2026
06:53
Additive Manufacturing of Functionally Graded Ceramic Materials by Stereolithography
Published on: January 25, 2019
15.1K
Clinical comparison of conventional and additive manufactured stabilization splints
Christian Berntsen1, Martin Kleven2, Marianne Heian2
1Department of Prosthodontics, Faculty of Dentistry, University of Oslo, Oslo, Norway.
Acta Biomaterialia Odontologica Scandinavica
|August 22, 2018
Summary
Digital additive manufacturing of stabilization splints offers superior patient comfort compared to conventional methods. Both techniques yielded similar treatment outcomes, but digital scanning was preferred over traditional impressions.
Area of Science:
- Dentistry
- Biomaterials Engineering
- Prosthodontics
Background:
- Occlusal stabilization splints (SS) are crucial for managing temporomandibular disorders (TMD).
- Conventional fabrication methods can be time-consuming and may impact patient comfort.
- Digital additive manufacturing offers potential advancements in splint production.
Purpose of the Study:
- To compare conventional and digital additive manufacturing of hard occlusal stabilization splints (SS).
- To evaluate both technical and clinical parameters of each manufacturing method.
- To assess patient preference and comfort levels between the two techniques.
Main Methods:
- 14 subjects underwent DC/TMD Axis I and Axis II assessments.
- Subjects received either conventionally manufactured SS (CM-SS) or CAD-CAM additive manufactured SS (AM-SS).
- Both conventional alginate impressions and intraoral digital scanning were utilized.
Main Results:
- Subjects significantly preferred digital intraoral scanning over conventional alginate impressions.
- Additive manufactured splints (AM-SS) showed significantly higher comfort (mean VAS 15) than conventional splints (CM-SS, mean VAS 42).
- Splint manufacturing method did not influence treatment outcomes or improvements in jaw opening.
Conclusions:
- Digital additive manufacturing provides a more comfortable option for stabilization splints.
- While digital scanning is preferred, it is more time-consuming than conventional impressions.
- Both manufacturing methods result in improved oral function for patients with TMD.
Related Concept Videos
01:27Conjugate Addition (1,4-Addition) vs Direct Addition (1,2-Addition)
4.4K
α,β-Unsaturated carbonyl compounds with two electrophilic sites, the carbonyl carbon, and the β carbon, are susceptible to nucleophilic attack via two modes: conjugate or 1,4-addition and direct or 1,2-addition.
Conjugate addition results in a thermodynamically stable product. The reaction retains the stronger C=O bond at the expense of the weaker C=C π bond. The process is slow as the β carbon is less electrophilic than the carbonyl carbon.
Direct addition products are...
Conjugate addition results in a thermodynamically stable product. The reaction retains the stronger C=O bond at the expense of the weaker C=C π bond. The process is slow as the β carbon is less electrophilic than the carbonyl carbon.
Direct addition products are...
4.4K
01:53RNA Stability
35.8K
Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
35.8K
01:30Sign Convention
3.5K
When analyzing a beam subjected to various loads, it is crucial to understand the internal forces and moments generated within the structure. These internal forces can be broadly classified into normal forces, shear forces, and bending moments. To determine these forces and moments, we use the method of sections and apply a specific sign convention based on their direction and the side of the section being analyzed.
The normal force acts perpendicular to the beam's cross-section and can...
The normal force acts perpendicular to the beam's cross-section and can...
3.5K
03:18Nuclear Stability
23.3K
Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
To hold positively charged protons together...
To hold positively charged protons together...
23.3K
01:26Steel Manufacturing
1.5K
Steel manufacturing is a multi-stage process that begins by smelting iron ore into cast iron in a blast furnace. This initial stage involves layering iron ore with coke, a type of fuel, and crushed limestone within the furnace. The coke is ignited with a high volume of air, leading to the creation of carbon monoxide, which acts to reduce the iron ore to pure iron.
During this smelting process, limestone plays a crucial role by forming slag. Slag captures impurities within the molten iron, such...
During this smelting process, limestone plays a crucial role by forming slag. Slag captures impurities within the molten iron, such...
1.5K
02:57The Sense of Self: Reflected Self-Appraisal and Social Comparison
56.1K
According to Charles Cooley, we base our image on what we think other people see (Cooley 1902). We imagine how we must appear to others, then react to this speculation. We don certain clothes, prepare our hair in a particular manner, wear makeup, use cologne, and the like—all with the notion that our presentation of ourselves is going to affect how others perceive us. We expect a certain reaction, and, if lucky, we get the one we desire and feel good about it. But more than that, Cooley...
56.1K