A cleaning apparatus and method for cleaning dental and/or medical implements, and in particular to a system for quickly and thoroughly cleaning dental and/or orthodontic retainers, dental/orthodontic aligners, dental appliances, dentures, bridges, and the like. The preferred embodiment of the present invention contemplates a cleaning system utilizing a vibrating sonic wave bath comprising a vibration means to oscillate a container having at least some fluid therein engaging the item to be cleaned, coupled with the utilization of a preferably flavored tablet containing a non-toxic cleaning material, the tablet preferably also formulated to effervesce upon contact with water, generating bubbles and foam. It has been found that the sonic bath substantially enhances the cleaning and flavoring ability of the effervescent cleaning tablet, while reducing the amount of time to clean the dental appliance. The preferred embodiment of the present invention provides a relatively cost effective, safe, easy to use and reliable system for cleaning and flavoring dental appliances and the like.