Acknowledging I’m not the sharpest tack in the box, math on the proof confuses me. Would seem that if Average Power in both instances is the same at 4.0W yet the Repetition Rate doubles, would not that mean the Energy setting in the first example is 400mJoules while in the second is 200mJoules? I don’t understand but perhaps it doesnt matter with regard to Peak Power per Pulse.

Anyway, regardless of my misunderstanding we do observe efficient ablation of enamel/dentin/caries with an Er:YAG laser at 10Hz. In fact this has become our default setting for repetition rate. I suspect the contact tip concept is promoted to make hard tissue lasers “user-friendly” for us tactile trained dentists. Maybe this would be useful for “feeling out the bone” in the controversial Closed Flap Laser Crown Lengthening Procedure.

Al