Table 1.

Study groups.

STAGE 1 (80 Teeth)
MaF0 (n = 10)	MaM0 (n = 10)	MaF45 (n = 10)	MaM45 (n = 10)	PiF0 (n = 10)		PiM0 (n = 10)	PiF45 (n = 10)	PiM45 (n = 10)
Magnetostrictive Scaler Full Power 0 Degrees	Magnetostrictive Scaler Medium Power 0 Degrees	Magnetostrictive Scaler Full Power 45 Degrees	Magnetostrictive Scaler Medium Power 45 Degrees	Piezoelectric Scaler Full Power 0 Degrees		Piezoelectric Scaler Medium Power 0 Degrees	Piezoelectric Scaler Full Power 45 Degrees	Piezoelectric Scaler Medium Power 45 Degrees
STAGE 2 (40 Teeth)
Group N (n = 20)					Group R (n = 20)
Polishing with a nylon bristle brush					Polishing with a rubber prophy cup