Table 2.

Pre- and post-cleaning score changes across protocols

Protocol	Cleaning Score			p value**
	Pre-Cleaning Median (1st – 2nd Quartile)	Post-Cleaning Median (1st – 2nd Quartile)	Change in % Median (1st – 2nd Quartile)
1 st Group	3.0 (3.0–3.0)	3.0 (2.0–3.0)	0 (0–33)	0.083
2nd Group	3.0 (2.8–3.0)	2.0 (2.0–2.3)	33 (0–33)	0.008
3rd Group	2.5 (2.0–3.0)	1.0 (1.0–1.0)	58 (50–67)	0.004
4th Group	3.0 (2.0–3.0)	1.0 (0.8–2.0)	67 (33–75)	0.006
5th Group	3.0 (3.0–3.0)	1.0 (1.0–2.0)	67 (33–67)	0.004

**Wilcoxon Signed Rank Test