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The Begg retainers have the labial bow extending around the distal aspect of the terminal molar. [10] They allow occlusal settling, as no wire work crosses the occlusion. Begg retainers are robust enough to be worn during eating, [11] however they are more retentive than Hawley retainers and the labial bow is less prone to distortion. [12]
A retainer agreement is a work-for-hire contract. It falls between a one-off contract and permanent employment, which may be full-time or part-time. [1] Its distinguishing feature is that the client or customer pays in advance for professional work to be specified later. The purpose of a retainer fee is to ensure that the employed reserves time ...
The wing or retainer must be rigid and is usually fabricated from a metal alloy. The inner surface must fit closely to the abutment tooth. The intaglio is treated in some way to enhance the micromechanical adhesion between the prosthesis and the composite resin cement. In the past various methods have been used, ranging from metal-weave ...
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.
When a removable denture is worn, retainers to hold the denture in place can be either custom made or "off-the-shelf" (stock) abutments. When custom retainers are used, four or more implant fixtures are placed and an impression of the implants is taken and a dental lab creates a custom metal bar with attachments to hold the denture in place.