Related Experiment Video
Updated: Dec 29, 2025
07:32
Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment
Published on: February 23, 2024
1.7K
Dental bleaching during orthodontic treatment with aligners
The International Journal of Esthetic Dentistry
|January 30, 2020
Summary
Tooth whitening using clear aligners without reservoirs proved effective, matching traditional trays with reservoirs. This offers a convenient and cost-effective option for patients undergoing orthodontic treatment.
Area of Science:
- Dental Aesthetics
- Biomaterials Science
- Orthodontics
Background:
- Tooth whitening is a popular cosmetic dental procedure.
- Clear aligners are increasingly used for orthodontic treatment.
- The effectiveness of using aligners as bleaching trays without reservoirs is not well-established.
Purpose of the Study:
- To determine the tooth whitening effectiveness of clear aligners (Invisalign, Vivera retainers) used as bleaching trays without reservoirs.
- To compare this effectiveness with traditional bleaching trays that have reservoirs.
- To utilize finite element analysis (FEA) and clinical spectrophotometry to assess gel distribution and whitening efficacy.
Main Methods:
- Finite Element Analysis (FEA) was employed to determine optimal bleaching gel distribution within aligner trays.
- Clinical spectrophotometry was used to measure chromatic variation (whitening) on teeth.
- A comparative study was conducted between teeth bleached with reservoir trays (control) and teeth bleached with aligners without reservoirs (study).
Main Results:
- FEA indicated that 2 mm³ of gel applied to the center of the vestibular tooth surface in the tray provides optimal distribution.
- Clinical study revealed no significant difference in whitening effectiveness between aligner trays without reservoirs and traditional trays with reservoirs.
- Both methods resulted in effective tooth whitening, with high patient satisfaction.
Conclusions:
- Clear aligners can be effectively used as bleaching trays without reservoirs for tooth whitening.
- This approach offers advantages such as convenience and reduced cost for patients undergoing orthodontic treatment.
- Further clinical research is recommended to fully assess the long-term effectiveness of this combined treatment approach.
More Related Videos
Related Concept Videos
01:15Teeth
1.5K
The formation of teeth, also known as odontogenesis, is a complex process that begins in utero, around the sixth week of embryonic development. There are three stages to this process: the bud stage, the cap stage, and the bell stage.
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin...
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin...
1.5K
01:24ortho–para-Directing Deactivators: Halogens
6.5K
Halogens are ortho–para directors. They are more electronegative than carbon. Therefore, as ring substituents, they can withdraw electrons through the inductive effect and deactivate the aromatic ring towards electrophilic substitution. Halogens also have an electron-donating resonance effect on the ring, which influences the orientation of the incoming electrophile. If an electrophile attacks at the ortho or the para position, the halogen donates electrons and stabilizes the intermediate...
6.5K
01:21Tooth Anatomy
1.9K
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...
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...
1.9K