Orthodontic appliances that accommodate incremental and continuous tooth movement, systems and methods
An orthodontic appliance including a shell aligner having a portion accommodating movement of a patient's bracketed teeth between a first position and the second position as elicited by force from an orthodontic braces appliance worn by the patient, related systems and methods.
1 . A system for treating a patient having at least one bracketed tooth coupled to at least one bracket of a wire and bracket appliance, the system comprising:
a computer comprising instructions that, when executed, cause the computer to:
receive a first position of the at least one bracketed tooth in a treatment plan;
receive a second position of the at least one bracketed tooth in the treatment plan different from the first position;
determine a movement path geometry comprising a volume accommodating mesial-distal movement of the at least one bracketed tooth between the first position and the second position, the mesial-distal movement being elicited by force applied by the wire and bracket appliance; and
a shell appliance comprising a plurality of teeth receiving cavities shaped according to the first and second positions to receive and resiliently position teeth of the patient and a relief portion comprising a cavity defining a geometric volume encompassing at least a volume corresponding to a geometric summation of volumes occupied by the at least one bracketed tooth when following between the first position and the second position.
2 . The system of claim 1 , wherein the at least one bracket is disposed at least partially outside the relief portion when the at least one bracketed tooth is received within the cavity.
3 . The system of claim 1 , wherein the relief portion defines an unobstructed insertion path for the at least one bracket when an appliance shell is at least one of: positioned on the patient's teeth or removed from the patient's teeth.
4 . The system of claim 3 , wherein the relief portion comprises a shortened shell wall extending less than an entire distance between an occlusal portion of the at least one bracketed tooth and a gingival line of the at least one bracketed tooth when the at least one bracketed tooth is received within the cavity so as to provide the unobstructed insertion path for the at least one bracket.
5 . The system of claim 4 , wherein the shortened shell wall extends partially over the at least one bracket when the at least one bracketed tooth is received within the cavity.
6 . The system of claim 3 , wherein the relief portion comprises a cutout extending around the at least one bracket when the at least one bracketed tooth is received within the cavity so as to provide the unobstructed insertion path for the at least one bracket.
7 . The system of claim 1 , wherein the volume is defined by the at least one bracketed tooth moving between a plurality of intermediate positions between the first position and the second position.
8 . The system of claim 1 , wherein the relief portion is shaped to restrict at least one direction of movement of the at least one bracketed tooth during the mesial-distal movement of the at least one bracketed tooth between the first position and the second position.
9 . The system of claim 1 , wherein the relief portion comprises an active portion that contacts the at least one bracketed tooth so as to apply a force to the at least one bracketed tooth.
10 . The system of claim 1 , wherein the relief portion is shaped to accommodate a plurality of bracketed teeth each coupled to a respective bracket of the wire and bracket appliance.
11 . The system of claim 1 , wherein the medial-distal movement of the tooth geometry comprises inclination, angulation, translation, rotation, intrusion, extrusion, or any combination thereof.
12 . The system of claim 1 , wherein the relief portion includes an insertion path to receive the bracket or the at least one bracketed tooth.
13 . The system of claim 1 , wherein the relief portion is shaped to include a protrusion, a bubble, an envelope, or a slot shape, and any combination thereof.
14 . The system of claim 1 , wherein the relief portion forms an open portion of the shell appliance.
15 . The system of claim 14 , wherein the open portion of the shell appliance comprises a hole, a window, or an annulus, and any combination thereof.
16 . The system of claim 1 , wherein the shell appliance is configured to enable one or more directions of tooth movement and restrict other directions of tooth movement.
17 . The system of claim 16 , wherein the shell appliance is configured to enable rotation and translation of the teeth and restrict extrusion of the teeth.
18 . The system of claim 16 , wherein the shell appliance is configured to restrict movement of one or more teeth.
19 . The system of claim 1 , wherein the shell appliance is configured to receive the at least one bracketed tooth and at least one adjacent unbracketed tooth.
20 . The system of claim 19 , wherein the shell appliance is configured to exert the movement force on both the at least bracketed tooth and the at least one adjacent unbracketed tooth.