The ornamental design for a tongueplate, as shown and described.
FIG. 1 is a right side perspective view of a tongue plate showing my new design;
FIG. 2 is a top view thereof;
FIG. 3 is a bottom view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a front view thereof;
FIG. 6 is a left side perspective view thereof;
FIG. 7 is a further perspective view thereof; and,
FIG. 8 is a right side perspective view thereof.
A tightly fitting and well retained upper removable appliance fabricated with Adams clasps on the upper first permanent molars and two C clasps placed on the upper deciduous canines. An acrylic plate is mounted posterior to the upper incisors from canine to canine.