The Efficacy and Safety of a Herbal Toothpaste in Reducing Gingivitis: A Double-Blind, Randomized, Placebo-Controlled, Parallel Allocation Clinical Trial

Table 4

Efficiency differences between tooth types at 12 weeks.

Index	Tooth types	Mean efficiency	Efficiency difference	P value
GI	Premolar	8.7%	-5.12%	0.013
	Molar	13.8%
	Anterior	7.1%	-6.73%	<0.001
	Molar	13.8%
	Anterior	7.1%	-1.61%	0.546
	Premolar	8.7%
BI	Premolar	12.6%	-7.83%	0.003
	Molar	20.5%
	Anterior	9.6%	-10.88%	<0.001
	Molar	20.5%
	Anterior	9.6%	-3.04%	0.291
	Premolar	12.6%

indicates statistical significance at p<0.05.
^aANOVA.
^bMean efficiency = (test - control)/control 100%.
^cEfficiency difference means the difference between two groups.