Table 3. The Wilcoxon signed-rank test to compare the expected pain scores with the actually experienced pain scores. Z is the Wilcoxon signed-rank test result.

	Overall pain	Upper posterior teeth	Upper anterior teeth	Lower posterior teeth	Lower anterior teeth	Composite removal
Z	−4·194	−4·053	−5·349	−3·569	−4·159	−3·274
Significance P-value	<0·0001	<0·0001	<0·0001	<0·0001	<0·0001	0·001