Search results
Results from the WOW.Com Content Network
The Invisalign Express 10, which uses 10 aligners, was introduced in 2005. [14] Invisalign 1.5 was released in 2009. It was followed by Invisalign G3 in 2010 and G4 in 2011. Invisalign G3 and G4 were designed for more complex treatments. An Invisalign Express 5 version, which uses 5 aligners, was introduced in 2012. [15]
[10] [11] The molds for the aligners are built in layers using a photo-sensitive liquid resin that cures into a hard plastic when exposed to a laser. [10] The aligners are made from an elastic thermoplastic material that applies pressure to the teeth to move into the aligner's position.
The fitting process can vary between different types of braces, though there are similarities such as the initial steps of moulding the teeth before application. For example, with clear braces, impressions of a patient's teeth are evaluated to create a series of trays, which fit to the patient's mouth almost like a protective mouthpiece.
A special tray is an impression tray custom made for an individual patient by a denturist (dental technician), usually made from acrylic, such as polymethyl methacrylate, or shellac. A stock tray is used to make a preliminary impression, from which a model can be cast. This is then used for wax to make the tray to be laid down.
Age progression is the method involved with changing a photo of an individual to show the impact of maturing on their appearance.Computerized image processing is the most widely recognized procedure, in spite of the fact that craftsmen's drawings are frequently used.
The specific problem is: The difference or equivalence between 4R, KG, PC, 10 × 15 and A6 (the international postcard size) should be made clearer. Please help improve this paragraph if you can. ( November 2019 ) ( Learn how and when to remove this message )
The March of Progress has often been imitated, parodied, or adapted for commercial or political purposes. [7] The cover of the 1972 Doors album Full Circle references the March of Progress, as does the 1985 Supertramp album Brother Where You Bound, while the soundtrack CD for the 1992 movie Encino Man shows an ape evolving into a skateboarder. [11]
Designed expressly for the executive market, the Spartan Executive was configured for both performance and comfort. Built during the Great Depression, the 7W was the brainchild of company-founder William G. Skelly of Skelly Oil who desired a fast, comfortable aircraft to support his tastes and those of his rich oil-executive colleagues. [2]