Related Experiment Video
Updated: Aug 6, 2026
06:17
Assessing Human Spatial Navigation in a Virtual Space and its Sensitivity to Exercise
Published on: January 26, 2024
How we got from there to here and back
International Journal of Orthodontics (Milwaukee, Wis.)
|August 3, 2006
Summary
New orthodontic expansion techniques offer less invasive treatments than traditional methods. These modern approaches avoid excessive tooth extraction, improving patient comfort and facial aesthetics.
Area of Science:
- Orthodontics
- Dentofacial Orthopedics
Background:
- Edward H. Angle's dominance in orthodontics established nonextraction paradigms.
- Charles Tweed's diagnostic regimen, while challenging Angle, led to excessive tooth extractions.
- Previous methods resulted in undesirable soft tissue changes and patient dissatisfaction.
Discussion:
- This article contrasts novel expansion techniques with Angle's original methods.
- New techniques provide a less invasive and more comfortable therapeutic alternative.
- These advancements aim to preserve and enhance facial aesthetics during orthodontic treatment.
Key Insights:
- Modern expansion techniques offer a significant improvement over historical orthodontic approaches.
- Patient well-being and aesthetic outcomes are prioritized in contemporary methods.
- Reduced invasiveness and improved comfort are hallmarks of new expansion therapies.
Outlook:
- Further research into the long-term stability and efficacy of new expansion techniques is warranted.
- Wider adoption of these patient-centered approaches could redefine orthodontic treatment standards.
- Continued innovation in orthodontic technology promises even less invasive and more effective solutions.
Related Concept Videos
01:34Crossing over
Unlike mitosis, meiosis aims for genetic diversity in its creation of haploid gametes. Dividing germ cells first begin this process in prophase I, where each chromosome—replicated in S phase—is now composed of two sister chromatids (identical copies) joined centrally.
The homologous pairs of sister chromosomes—one from the maternal and one from the paternal genome—then begin to align alongside each other lengthwise, matching corresponding DNA positions in a process called synapsis.
In order to...
The homologous pairs of sister chromosomes—one from the maternal and one from the paternal genome—then begin to align alongside each other lengthwise, matching corresponding DNA positions in a process called synapsis.
In order to...
01:34Crossing Over
Unlike mitosis, meiosis aims for genetic diversity in its creation of haploid gametes. Dividing germ cells first begin this process in prophase I, where each chromosome—replicated in S phase—is now composed of two sister chromatids (identical copies) joined centrally.
The homologous pairs of sister chromosomes—one from the maternal and one from the paternal genome—then begin to align alongside each other lengthwise, matching corresponding DNA positions in a process called synapsis.
In order to...
The homologous pairs of sister chromosomes—one from the maternal and one from the paternal genome—then begin to align alongside each other lengthwise, matching corresponding DNA positions in a process called synapsis.
In order to...
01:30Crossing Over
Crossing over is the exchange of genetic information between homologous chromosomes during prophase I of meiosis I. Genetic recombination gives rise to allelic diversity in the newly formed daughter cells. In humans, crossing over produces genetically distinct haploid egg and sperm cells that undergo fertilization to produce unique offspring. Before cell division starts, the germ cell’s chromosome(s) undergo duplication in the S phase of the cell cycle. As the cells enter prophase I, duplicated...
01:27Non-inertial Frames of Reference
A reference frame accelerating or decelerating relative to an inertial frame is a non-inertial frame. To help understand this, consider what taking off in an airplane, turning a corner in a car, riding a merry-go-round, and the circular motion of a tropical cyclone all have in common. All these systems are accelerating, decelerating, or rotating relative to the Earth; hence, they all are non-inertial frames. All these systems exhibit inertial forces, which merely seem to arise from motion,...
01:19Introduction to Horizontal Curves
Horizontal curves are essential in highway and railroad design, ensuring smooth and safe transitions between straight path segments, or tangents. These curves allow vehicles to maintain speed without abrupt changes, minimizing accidents and improving travel efficiency.A horizontal curve is typically defined by its geometric relationship to two tangents that meet at an intersection point (P.I.), where a simple curve is introduced to connect them. The back tangent refers to the initial tangent...
02:35What is Evolutionary History?
Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.Phylogenetic trees illustrate the evolutionary relationships among these organisms. Scientists infer organisms’ common ancestry by evaluating shared morphological and genetic characteristics. Together, the fossil...