Dentistry – Orthodontics – By mouthpiece-type retainer
Patent
1995-03-21
1997-07-08
Lucchesi, Nicholas D.
Dentistry
Orthodontics
By mouthpiece-type retainer
A61C 300
Patent
active
056454201
ABSTRACT:
An orthodontic appliance of the type which is generally U-shaped in plan view and includes a tooth receiving trough formed between lingual and labial/buccal side flanges in at least one of the upper or lower sides thereof is provided for use by Caucasoid, Mongoloid and Negroid patients. The trough includes tooth receiving depressions for receiving and positioning teeth from central and lateral incisors to and including a molar. The appliance preferably is preformed in a range of different sizes to accommodate different sized mouths and stages of dentition. The troughs, when two are provided, may be vertically fixed relative to one another in that the appliance is a single body device or may be movable relative to one another and joined at a pair of posterior hinges. The labial flange, in an area of the incisors, extends gingivally from a tooth receiving surface of said trough by more than 10 mm so as to overlie a patient's gingival labial tissue and pre-maxilla to an extent not previously provided and up to 10 mm further gingivally on the lingual in the area of the four lower incisors. Further, the lingual flange defining the upper trough has lingually extending depressions of 0.1 to 1 mm which extend slightly laterally at a mesial area and distal edge of the central incisors and at a distal edge and a mesial edge of the lateral incisors so as to be positioned adjacent to the lateral edges of all four incisors.
REFERENCES:
patent: 3478429 (1969-11-01), Shilliday
patent: 4504225 (1985-03-01), Yoshii
patent: 5028231 (1991-07-01), Hall
patent: 5059118 (1991-10-01), Breads et al.
patent: 5259762 (1993-11-01), Farrell
Lucchesi Nicholas D.
Ortho-Tain Inc.
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