Orthodontic appliance

  • US 4,878,840 A
  • Filed: 02/22/1988
  • Issued: 11/07/1989
  • Est. Priority Date: 08/03/1978
  • Status: Expired due to Term
First Claim
Patent Images

1. An orthodontic appliance comprising:

  • a base having an inwardly facing surface on one side thereof adapted for attaching the appliance and a body portion extending outwardly from the other side of said base;

    said body portion having one embodiment substantially shorter than a corresponding dimension of the base;

    a pair of wings, each wing extending in opposite directions from the body portion and having a length extending substantially beyond the body portion to define wire receiving slots between the base and the ends of said wings;

    the wings defining an outwardly facing domed surface which is curved in at least one direction and which thereby presents a comfortable surface to the mouth tissue of the patient; and

    a cross slot extending into said body portion between the wings and configured to receive therein a dental appliance of predetermined dimensions, the cross slot having a curved surface between the bottom of the cross slot and the sides of the cross slot to reduce stress concentrations.

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