The ornamental design for an oraltherapydevice, as shown and described.
FIG. 1 is a front perspective view of the oral therapy device showing my new design;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a right side elevational view thereof;
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
The broken line showing of the motorized handle in FIGS. 1 and 2 is included for the purpose of illustrating environment of the article and forms no part of the claimed design.
The broken lines in FIG. 8 represent unclaimed portions of the oral therapy device and form no part of the claimed design.