Is it safe to eat off of unglazed porcelain dinnerware?

although you could eat off it.. you would never get it clean enough to stop bacteria from growing in the pores.. thus making you sick at some point.. or possibly making you sick. porcellain of course is very smooth and not nearly as pourous as earthenware or stoneware.. but i still wouldnt eat off or drink out of anything with out a glaze on it.