FIG. 1 is a top perspective view of a dental appliance, showing my new design in an aligned position;
FIG. 2 is a top plan view of FIG. 1;
FIG. 3 is a bottom plan view of FIG. 1;
FIG. 4 is a left-side elevational view of FIG. 1, the right-side elevational view being a mirror image thereof;
FIG. 5 is a front elevational view of FIG. 1;
FIG. 6 is a rear elevational view of FIG. 1;
FIG. 7 is a bottom perspective view of FIG. 1;
FIG. 8 is a left-side elevational view thereof, illustrated in a non-aligned position;
FIG. 9 is a top perspective view of FIG. 8; and,
FIG. 10 is a top plan view of FIG. 8.
The broken lines in the drawings illustrate environmental matter that forms no part of the claimed design.