Table 2.

Radiographic evaluation of all three groups after 1, 3, 6, and 9 months

	*Dropouts	PR		PLW		BR		PA		χ 2	p value
		P	A	P	A	P	A	P	A
1 month to 3 months
Group I	3	0	17	0	17	0	17	0	17	0.822	p = 322
Group II	2	0	18	0	18	0	18	0	18
Group III	0	0	20	0	20	0	20	0	20
3 months to 6 months
Group I	0	0	17	0	17	0	17	0	17	0.823	p = 0.38
Group II	1	0	17	0	17	0	17	0	17
Group III	0	0	20	0	20	0	20	0	20
6 months to 9 months
Group I	1	1	15	1	15	1	15	1	15	0.72	p = 0.48
Group II	0	0	17	0	17	0	17	0	17
Group III	1	0	19	1	19	0	19	1	19
PR, Pathological Resorption; PLW, Pathological Ligament Widening; BR, Bifurcation Radiolucency; PA, Periapical Abscess; level of significance at p < 0.05
*study participants at start of study N = 20P-present; A-absent