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An Akers' clasp is the classic direct retainer for removable partial dentures. [1] Named after its inventor, Polk E. Akers, this suprabulge clasp consists of a rest, a guide plate, a retentive arm and a reciprocal arm. Akers' clasps, as a rule, face away from an edentulous area. Should they face the edentulous area, they are termed reverse ...
A removable partial denture (RPD) is a denture for a partially edentulous patient who desires to have replacement teeth for functional or aesthetic reasons and who cannot have a bridge (a fixed partial denture) for any reason, such as a lack of required teeth to serve as support for a bridge (i.e. distal abutments) or financial limitations.
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.
When SmileDirectClub shut down a year ago, scores of existing customers of the teeth-straightening company were left in limbo. New York Attorney General Letitia James has announced that her office ...
At the Smile Direct Club Smile House, located in Antioch, TN, thousands of dental liners are produced every day. The company, which sold dental aligners to customers through the mail, ...
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]
One final frown for SmileDirectClub investors.The tooth alignment outfit filed for voluntary protection under Chapter 11 of the US Bankruptcy Code on Friday, Yahoo Finance exclusively learned.
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.