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Table 2 Results of descriptive statistics and Kruskal–Wallis test for study groups

From: The effects of amalgam contamination and different surface modifications on microleakage of dentin bonded to bulk fill composite when using different adhesive protocols

Descriptive statistics

Amalgam groups

Control groups

ER

SE

CHX

DR

NT

CHX

 DR

NT

ER

SE

Median

3.00

4.00

3.50

2.00

1.50

2.50

4.00

2.00

Minimum

1

4

1

1

0

0

1

1

Maximum

4

4

4

4

4

4

4

3

p

0.065

0.845

 
  1. ER etch-and-rinse, SE self-etch, CHX 2% chlorhexidine treatment, DR dentin refreshment, NT no treatment