Best thing I learned from the ALD from Wayne Seltings EXCELLENT lecture on a study looking at the debris from one pulse on enamel vs dentin. In enamel there was over 2000 particles on the surface of the tip from one pulse on a new tip.
Dentin debris was 7-8X as bad as when the laser was used on enamel.
Bottom line was efficiency could drop by up to 40% from Debris alone on the tip and his solution………
Polish for 5 secs after each use with a Soflex super fine polishing disc.
He uses the Delight so I cant speak for the MD or Waterlase.
Hope that helps…..it was an awesome home research project that he did with material he bought of Ebay. Awesome job Wayne.
Glenn