Systems, methods, and devices for applying distributed forces for mandibular advancement
Improved systems, methods, and devices for treating sleep apnea are provided herein. In one aspect, an intraoral appliance for treating sleep apnea in a patient comprises an appliance shell comprising a plurality of cavities shaped to receive teeth of a jaw of the patient. The appliance shell can comprise an advancement structure arranged to interact with an opposing jaw of the patient so as to displace the lower jaw anteriorly relative to the upper jaw. The plurality of cavities can comprise cavity geometries shaped to reduce repositioning of one or more received teeth elicited by displacement of the lower jaw anteriorly relative to the upper jaw.
1. An intraoral orthodontic appliance for treating sleep apnea in a patient by displacing a lower jaw of the patient anteriorly relative to an upper jaw of the patient, the appliance comprising:
an appliance shell comprising a plurality of cavities shaped to receive teeth of a jaw of the patient, wherein the appliance shell comprises an advancement structure arranged to interact with an opposing jaw of the patient so as to displace the lower jaw anteriorly relative to the upper jaw, and wherein the plurality of cavities comprises cavity geometries shaped to reduce repositioning of one or more received teeth elicited by displacement of the lower jaw anteriorly relative to the upper jaw, the cavity geometries further being shaped to reposition the patient's teeth towards a target arrangement and to apply a non-uniform force distribution comprising an amount of force applied to one or more posterior teeth that is greater than an amount of force applied to one or more anterior teeth.
2. The appliance of claim 1 , wherein the plurality of cavities comprises one or more posterior cavities shaped to receive the one or more posterior teeth, and wherein the one or more posterior cavities comprise a position different from a position of the one or more posterior teeth.
3. The appliance of claim 1 , wherein the cavity geometries comprise a gap between an inner cavity wall and a surface of the one or more anterior teeth.
4. The appliance of claim 1 , wherein the plurality of cavities is shaped to receive at least one anterior tooth, and wherein the cavity geometries are shaped to reduce repositioning of the at least one anterior tooth elicited by the displacement.
5. The appliance of claim 4 , wherein the at least one anterior tooth comprises an anterior tooth of the lower jaw and the cavity geometries are shaped to reduce anterior flaring of the anterior tooth of the lower jaw elicited by the displacement.
6. The appliance of claim 4 , wherein the at least one anterior tooth comprises an anterior tooth of the upper jaw and the cavity geometries are shaped to reduce retraction of the anterior tooth of the upper jaw elicited by the displacement.
7. The appliance of claim 1 , further comprising a second appliance shell comprising a second plurality of cavities shaped to receive teeth of the opposing jaw.
8. The appliance of claim 7 , wherein the advancement structure interacts with the opposing jaw via engagement with a second advancement structure of the second appliance shell.
9. A method for producing an intraoral appliance for treating sleep apnea in a patient, the method comprising:
determining, with aid of one or more processors, a geometry of an appliance shell comprising a plurality of cavities shaped to receive teeth of a jaw of the patient, wherein the appliance shell comprises an advancement structure arranged to interact with an opposing jaw of the patient so as to displace a lower jaw anteriorly relative to an upper jaw, and wherein the plurality of cavities comprises cavity geometries shaped to reduce repositioning of one or more received teeth elicited by displacement of the lower jaw anteriorly relative to the upper jaw and to apply a non-uniform force distribution comprising an amount of force applied to one or more posterior teeth that is greater than an amount of force applied to one or more anterior teeth.
10. The method of claim 9 , wherein the plurality of cavities comprises one or more posterior cavities shaped to receive the one or more posterior teeth, and wherein the one or more posterior cavities comprise a position different from a position of the one or more posterior teeth.
11. The method of claim 9 , wherein the cavity geometries comprise a gap between an inner cavity wall and a surface of the one or more anterior teeth.
12. The method of claim 9 , wherein the plurality of cavities is shaped to receive at least one anterior tooth, and wherein the cavity geometries are shaped to reduce repositioning of the at least one anterior tooth elicited by the displacement.
13. The method of claim 12 , wherein the at least one anterior tooth comprises an anterior tooth of the lower jaw and the cavity geometries are shaped to reduce anterior flaring of the anterior tooth of the lower jaw elicited by the displacement.
14. The method of claim 12 , wherein the at least one anterior tooth comprises an anterior tooth of the upper jaw and the cavity geometries are shaped to reduce retraction of the anterior tooth of the upper jaw elicited by the displacement.
15. The method of claim 9 , further comprising determining, with aid of the one or more processors, a geometry of a second appliance shell comprising a second plurality of cavities shaped to receive teeth of the opposing jaw.
16. The method of claim 15 , wherein the advancement structure interacts with the opposing jaw via engagement with a second advancement structure of the second appliance shell.