A medical manual dental device enables a precise assessment of the quality of the periodontal tissue and peri-implant tissue of mammals, and of human beings in particular. The dental device (1) includes a handle portion (2) and at least one flat, laminar body (3), at least the body (3) having the following characteristics: a) at least one of the two faces includes a visual indicator (4), and b) the visual indicator (4) has a colour chosen from white, yellow, green, blue and black. A kit including at least two such dental devices, wherein each device differs from the other(s) in terms of its color and/or the shade of the color of the visual indicator (4) is also described.
