angieLynn, you will find information comparing MMS1, CDS and CDH at
mmsinfo.org/.
If you want to kill pathogens, it seems that chlorine dioxide (CLO2) is the active part of those three sodium chlorite solutions (SCS).
Recall that externally (outside the stomach) MMS1 is about 7% activated, CDH is 50% activated and CDS is 100% activated. Those numbers are an indication of the amount of CLO2 produced by the SCSs externally. Since your teeth are quite a distance from your stomach, there won't be any further activation (CLO2 generation) of MMS1 or CDH in your mouth.
Using MMS1 or CDH will leave some sodium chlorite, acid activator, CLO2 and whatever other byproducts created by them, sloshing around in your mouth. CDS will only be CLO2 in distilled water.