A nursing bottle for automatically rinsing a baby's teeth by independently dispensing first and second liquids, includes a nursing bottle having a nipple, a rinsing device having a dispensing end and a plurality of dispensing holes adjacent to the dispensing end for retaining the second liquid within the rinsing device while the nursing bottle receives the first liquid, and dispensing the second liquid automatically when the first liquid has been substantially depleted. The second liquid remains retained within the rinsing device when the bottle is at least substantially inverted due to the pressure of the first liquid at the dispensing holes and the vacuum created inside the rinsing device. When the first liquid is depleted sufficiently to expose at least one dispensing hole, the pressure is released, air is introduced into the rinsing device and the second liquid is dispensed through the other dispensing hole. As a result, the second liquid is automatically released from the rinsing device and into the nipple to rinse the baby's teeth at the proper time.