What can i use to clean my dental crowns?

Same thing: The same things you use to clean your teeth. Follow your dentist's recommendations to the letter. Need to brush everywhere a brush can reach, floss those places a brush can't reach. Your dentist may also suggest adjuncts such as oral irrigating devices, interdental brushes, mouthwash, etc. Don't ask our friends, ask your dentist.

same as your teeth: Treat crowns the same way you would your regular teeth, brush floss rince, etc.

Normal Brushing : And cleaning inter dentally - the same as for your un-crowned natural teeth. I personally am a big fan of the waterpik for nightly use and interdental soft picks (sunstar) for daily use. A good mouth rinse prior to bed is also recommended. The cleaner you can keep it the longer it will last. Hope this helps.