Dentistry – Orthodontics – By mouthpiece-type retainer
Patent
1982-05-17
1983-11-08
Peshock, Robert
Dentistry
Orthodontics
By mouthpiece-type retainer
A61C 700
Patent
active
044139780
ABSTRACT:
An orthodontic retainer is provided for maintaining a patient's teeth properly positioned after the teeth have been aligned by orthodontic treatment. The retainer consists of a first metallic member in the form of an arcuate band formed, for example, of silver-chromium alloy, which is configured to conform with the lingual surface of the teeth of the patient's arch, and which is cemented to the lingual side of the arch, this member serving to retain the teeth in their proper positions which were achieved through previous orthodontic treatment. The retainer also includes a transparent plastic member in the form of a second arcuate band formed, for example, of acrylic, which extends around the labial side of the arch and which conforms with the labial surfaces of the teeth. The transparent plastic member is removable, and it is held in place by elastics or other ligatures which are fitted on posts on the ends of the plastic member and on corresponding posts on the ends of the metallic member.
REFERENCES:
patent: 3849885 (1974-11-01), Robins
patent: 3903604 (1975-09-01), Snead
patent: 4253828 (1981-03-01), Coles et al.
Beecher Keith D.
Peshock Robert
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