A portable oral care system comprising a toothbrush having a detachable handle portion forming a dispenser containing an oral care product. The dispenser is configured as a dispensing pen having a dispensing orifice or applicator at one end. The dispenser includes a ratchet-type fluid dispensing system for delivering the oral care product. The dispenser includes a self-biasing push button actuator formed of a deformable elastomeric material with an elastic memory. A user may detach the dispenser from the toothbrush, apply the product to an oral surface by depressing the actuator, and re-mount the dispenser in the toothbrush for storage.