Tables at a glance

Table 1

Table 2

Table 3

Figures at a glance

Comments

Figure 1

Comments

Figure 2

Comments

Figure 3

Table 1

Material	Manufacturer
A type silicone	Zhermack Elite HD+ A type
Clear silicone	Tdv dental
Retraction paste	Astringent retraction paste, 3M ESPE.
Retraction gel	Viscostat clear 25% aluminum chloride gel, Ultradent.
Retraction cord	Cerkamed retraction cords.

Table 1: Materials used in the study and the manufacturer's information

Table 2


	Injection pressure (kPa)				Post injection pressure (kPa)

	Minimum	Maximum	Median	Median displacement (mm)	Minimum	Maximum	Median	Median displacement (mm)
Materials tested
(n=35)
Astringent paste	261.963	325.113	296.99	1.6	214.966	71.52	264.25	1.8
Cerkamed (singlecord)	87.84	140.253	114.113	1.1	78.97	134.873	106.02	1
Cerkamed (singlecord)	87.84	140.253	114.113	1.1	78.97	134.873	106.02	1
Cerkamed (doublecord)	77.31	148.916	120.02	1.1	77.116	147.2766	117.31	1
Ultradent	78.276	130.596	103.61	1	71.52	124.14	95.89	1
Ultradent	78.276	130.596	103.61	1	71.52	124.14	95.89	1

Table 2: Injection and post-injection pressure values for Astringent, Cerkamed (single cord), Cerkamed (Double cord) and Ultradent in kPa.

Table 3

Astringent paste	Spearman's rho	Injection pressure	R	0.122	0.012
			P	0.485	0.946
			N	35	35
		Post injection pressure	R	0.238	0.064
			P	0.168	0.714
			N	35	35
Cerkamed (Single)	Spearman's rho	Injection pressure	R	.707**	.390*
			P	0	0.02
			N	35	35
		Post injection pressure	R	.501**	.431**
			P	0.002	0.01
			N	35	35
Cerkamed (Double)	Spearman's rho	Injection pressure	R	.865**	.836**
			P	0	0
			N	35	35
		Post injection pressure	R	.784**	.854**
			P	0	0
			N	35	35
Ultradent	Spearman's rho	Injection pressure	R	.812**	.800**
			P	0	0
			N	35	35
		Post injection pressure	R	.675**	.660**
			P	0	0
			N	35	35

Table 3: Spearman's test result.

**. Correlation is significant at the 0.01 level (2-tailed).
*. Correlation is significant at the 0.05 level (2-tailed).

FIGURE 1

Figure 1: Gingival sulcus model.

FIGURE 2

Figure 2: Correlation between expansion in sulcus during injection.

FIGURE 3

Figure 3: Correlation between post-injection pressure and the resulting dilation.