Ring-shaped illuminated mouth prop

A mouth prop device for use in dental care for holding open a mouth of a user which device provides maximum viewing area and lights up an entire mouth, the device comprising:

• a ring formed of rigid material configured to fit a wide range of mouth sizes, the ring having a much larger central opening than the radial thickness of the ring to provide a full view inside a mouth through the central opening, the ring comprising an outer concave recess around an outside perimeter of the ring for receiving opposing upper and lower teeth of a user fitting in the recess to support a mouth of a user in an open position, an annular micro fluorescent light attached to a side of the ring facing into a mouth of a patient, and an outer sanitized rubberized guard replaceably stretchable around and adapted for covering the outside perimeter of the ring including the concave recess.