Toothbrushing on your non-dominant side

I think that right-handed people have less plaque on the left side (presumably because the ergonomics are easier on the opposite of their dominant hand)? Study: "RH subjects had higher average of plaque index in upper left quadrants compared to upper right quadrants (P=0.044)"

https://www.researchgate.net/publication/261274185_Plaque_Removal_Ability_in_Left-_and_Right-handed_Patients_in_Different_Parts_of_the_Oral_Cavity