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Orthodontic spacer removal. [2] Spacers are usually used to put spaces in between teeth before braces are established. It can be agitating or painful, but patients are often warned not to pick at them or they will fall out. They are usually rubber, but sometimes they can be metal. They can be used when a patient's teeth are too close together.
In general, a spacer is a solid material used to separate two parts in an assembly. Spacers can vary in size from microns to centimeters. They can be made of metal, plastic, glass, and other materials. Shapes include flat sheet, cylindrical and spherical. Two sizes of metal standoffs and one plastic standoff.
Other uses are as a spacer, spring (Belleville washer, wave washer), wear pad, preload indicating device, locking device, and to reduce vibration (rubber washer). Washers are usually metal or plastic. High-quality bolted joints require hardened steel washers to prevent the loss of pre-load due to brinelling after the torque is applied.
C B, the compression set B is given by C B = [(t o - t i) / (t o - t n)] * 100 where t o is the original specimen thickness, t i is the specimen thickness after testing and t n is the spacer thickness or the specimen thickness during the test. [2]
Most of the panel has no rigid or metal-to-metal contact with the framework, it merely rests on it, with the tubes wrapped in hessian or with a rubber spacer. [2] The superleggera system was primarily based on the use of 'Duralumin', [citation needed] a material that originated in the Zeppelin industry prior to World War I.
Pre-cut metal shims, all with a thickness of 1.00 millimeter. Many materials make suitable shim stock (also often styled shimstock), or base material, depending on the context: wood, stone, plastic, metal, or even paper (e.g., when used under a table leg to level the table surface).