Table 2. Comparison of wound closure on Days 1 and 7 after tooth extraction.

	X̄ (D1) ± SD (mm)	X̄ (D7) ± SD (mm)	∆ ± SD (mm)	p -Value
Buccolingual width
CHX 0.2%	6.69 ± 1.42	2.41 ± 1.13	4.28 ± 0.65	0.0000000000637 a
Placebo	6.06 ± 1.81	3.91 ± 1.58	2.15 ± 0.60
Mesiodistal width
CHX 0.2%	9.25 ± 1.34	5.00 ± 1.22	4.25 ± 0.61	0.0000000000144 a
Placebo	8.40 ± 1,85	6.56 ± 1.80	1.84 ± 0.72

Abbreviations: CHX, chlorhexidine; SD, standard deviation.

Notes: X̄ (D1) = mean wound diameter on Day 1. X̄ (D7) = mean wound diameter on Day 7. ∆ = wound diameter on D7 − D1.

^aSignificant difference.