Figure 1: Gingival sulcus model.
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
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|
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Injection pressure (kPa) |
Post injection pressure (kPa) |
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|
Minimum |
Maximum |
Median |
Median |
Minimum |
Maximum |
Median |
Median displacement (mm) |
Materials tested |
|
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|
|
|
|
|
|
(n=35) |
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|
|
|
|
|
Astringent paste |
261.963 |
325.113 |
296.99 |
1.6 |
214.966 |
71.52 |
264.25 |
1.8 |
Cerkamed |
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 |
Table 2: Injection and post-injection pressure values for Astringent, Cerkamed (single cord), Cerkamed (Double cord) and Ultradent in kPa.
Astringent paste |
Spearman's rho |
Injection pressure |
R |
0.122 |
0.012 |
P |
0.485 |
0.946 |
|||
N |
35 |
35 |
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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 |
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Post injection pressure |
R |
.501** |
.431** |
||
P |
0.002 |
0.01 |
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N |
35 |
35 |
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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: Gingival sulcus model.
Figure 2: Correlation between expansion in sulcus during injection.
Figure 3: Correlation between post-injection pressure and the resulting dilation.
Tables at a glance
Figures at a glance