The ornamental design for an “intra-oral scanner”, as shown and described.
FIG. 1 is a perspective view of an intra-oral scanner;
FIG. 2 is a front view thereof;
FIG. 3 is a back view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom view thereof.
The broken line showing of portions of the “intra-oral scanner” is included for the purpose of illustrating environmental structure and forms no part of the claimed design.