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If not cleaned properly, retainers can act as a food reservoir and lead to caries and gingival inflammation. Cleaning options for removable retainers include retainer/denture tablets, the use of a toothbrush and fragrance-free soap or non-abrasive toothpaste. If the water used to clean the retainer is too hot, it may cause shrinkage. [1]
Indirect retainer (An example is the little metal piece coming off the "U" at a 90 degree angle near the top of the upper photo, which is a cingulum rest on a canine.) Physical retainer (This is a mesh of metal that allows the pink base material to connect to the metal framework of the RPD. Some consider physical retainers their own component ...
The most coronal position of untouched tooth structure (that is, the continual line of original, undrilled tooth structure at or near the gumline) is referred to as the margin. This margin will be the future continual line of tooth-to-restoration contact and should be a smooth, well-defined delineation so that the restoration, no matter how it ...
Retainer: The component attached to the abutment for retention of the prosthesis. Retainers can be major or minor. [3] Unit: Pontics and abutment teeth are referred to as units. The total number of units in a bridge is equal to the number of pontics plus the number of abutment teeth. [1]
For Clear Removable braces, an Essix retainer is used. This is similar to the original aligner; it is a clear plastic tray that is firmly fitted to the teeth and stays in place without a plate fitted to the palate. There is also a bonded retainer where a wire is permanently bonded to the lingual side of the teeth, usually the lower teeth only.
They are similar to dental retainers, but without the front wire. Palatal obturators are typically short-term prosthetics used to close defects of the hard/soft palate that may affect speech production or cause nasal regurgitation during feeding.
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