An oral cleaning system provides motivating feedback to a user before brushing and includes: a power toothbrush (10); one or more sensors (26) on or within the toothbrush; a processor (30) within the toothbrush configured to process sensor information obtained from the one or more sensors during a first brushing session of a user; and a feedback system (40) on or within the toothbrush responsive to the processor and configured to communicate brushing information to the user at a time subsequent to the first brushing session but before a second brushing session of the user.

A power device comprising: multiple light sources (202A, 202B, 202C) arranged in a housing (205); a mask (204) arranged around each of the multiple light sources in the housing and including multiple chambers (207A, 207B, 207C) corresponding to the multiple light sources to direct light (214A, 214B, 214C) emitted from the multiple light sources to a common area (140, 216) on an outer surface of the housing; and multiple image sources (214A, 214B, 214C) corresponding to the multiple light sources arranged between the multiple light sources and the outer surface of the housing, light emitted from each of the multiple light sources reaching a corresponding image source before reaching the surface of the housing and projecting a corresponding image (212) on the common area on the surface of the housing.

A power device including a first light source (202A) arranged in a housing (205) having an outer surface; a first mask (204) arranged around the first light source in the housing and including a first chamber (207A) corresponding to the first light source; and a transmissive display arranged between the first light source and the outer surface of the housing, light (214) emitted from the first light source reaching the transmissive display before reaching the outer surface of the housing and projecting a plurality of images (212) on a first area (140, 216) on the outer surface of the housing.

A power device comprising: multiple light sources (202A, 202B, 202C) arranged in a housing (205); a mask (204) arranged around each of the multiple light sources in the housing and including multiple chambers (207A, 207B, 207C) corresponding to the multiple light sources to direct light (214A, 214B, 214C) emitted from the multiple light sources to a common area (140, 216) on an outer surface of the housing; and multiple image sources (214A, 214B, 214C) corresponding to the multiple light sources arranged between the multiple light sources and the outer surface of the housing, light emitted from each of the multiple light sources reaching a corresponding image source before reaching the surface of the housing and projecting a corresponding image (212) on the common area on the surface of the housing.

An oral cleaning system provides motivating feedback to a user before brushing and includes: a power toothbrush (10); one or more sensors (26) on or within the toothbrush; a processor (30) within the toothbrush configured to process sensor information obtained from the one or more sensors during a first brushing session of a user; and a feedback system (40) on or within the toothbrush responsive to the processor and configured to communicate brushing information to the user at a time subsequent to the first brushing session but before a second brushing session of the user.

A display panel including a translucent carrier element that has an inner side, an outer side, and a display area is provided. At least one display element is arranged within the display area, the display element being formed by geometric structures realized as protrusions and/or depressions on both of the inner side and the outer side of the translucent carrier element. The display panel can be used in an information display that in particular comprises at least a light emitting element for backlighting the display element. The information display can be used in an appliance such as an electric toothbrush, wherein the protrusions and/or depressions integrally formed with the translucent carrier element.