Cotton otoblockers that are used to prevent the impression material from hitting the tympanic membrane Impression material being mixed together. This is the start of the mixing process, as the material needs to be one color. An<unk>  (also spelled;<unk> , ear mould or<unk>  is a device worn inserted into the ear for sound conduction or hearing protection.<unk> s are anatomically shaped and can be produced in different sizes for general use or specially cast from particular ear forms. Some users specify how hard or soft they want their mold to be, an audiologist can also suggest this. As a conductor, it improves sound transmission to eardrums. This is an essential feature to diminish feedback paths in hearing aids and assure better intelligibility in noisy-environment communication. The main goal in wearing<unk> s is to attain better user comfort and efficiency.<unk> s (and their tubes) often turn yellow and stiff with age, and thus need replacement on a regular basis. Traditionally, the job of making<unk> s is very time-consuming and skillful; each one is made individually in a molding process. However, new digital ear laser scanners can accelerate this process.
Earmold
Maxilla
Finger cot
Tar 
Radium jaw
Jaipur foot
Caul
Boot 