Abstract: A custom dental irrigation device has: a user dentition model; a custom made mouthpiece made according to the user dentition model, a pump configured to pump fluid to the mouthpiece; a suction pump configured to remove fluid from the mouthpiece; a fluid tank; and a controller. The custom made mouthpiece is configured to deliver fluid to the dental target while removing used irrigation fluid. The mouthpiece is fabricated with 3-D print techniques. The mouthpiece is designed in two pieces to cover an upper portion of a dental target and a lower portion of a dental target separately. The mouthpiece has an inner surface following the shape of the user dentition model, wherein the inner surface touches the gingiva tissue to form a sealed space once the mouthpiece is set in a user's mouth, whereby fluid is delivered to the dental target, and removed from the sealed space.