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Characterization of New Quick Setting Polyether Impression Materials

Objective: of this study was to compare the material properties of the new quick-setting Impregum Penta Soft Quickstep HeavyBody (HBQ) / MediumBody (MBQ) and Impregum Soft Quickstep LightBody (LBQ) with the well established normal-setting Impregum Penta Soft HeavyBody (HB) / MediumBody (MB) and Impregum Garant Soft LightBody (LB).

 

Methods: consistency (CO), total working time (WT), detail reproduction (DR), linear dimensional change (LC), compatibility with gypsum (CG),  recovery from deformation (RD) and strain in compression (SC) acc. to ISO 4823:2000, tear strength (TS) and elongation at break (EL) acc. to DIN 53504.

 

Results: five specimens each were tested and analysed by 2-sample t-test (Mean (StDev)) for corresponding pairs HBQ-HB, MBQ-MB, LBQ-LB. Statistically significant differences (p < 0,05) are marked with an asterisk.

 

 

CO [mm]

WT

[sec]

LC

[%]

RD

[%]

SC

[%]

TS

[MPa]

EL

[%]

HBQ

33,1 (0,42)*

141 (8)*

-0,33 (0,05)

98,28 (0,04)*

2,78 (0,04)*

2,30 (0,23)*

391 (37)

HB

34,5 (0,35)

195 (4)

-0,31 (0,03)

98,02 (0,06)

5,53 (0,12)

1,88 (0,21)

360 (53)

 

 

 

 

 

 

 

 

MBQ

35,5 (0,35)

129 (8)*

-0,38 (0,08)

98,08 (0,08)

2,64 (0,05)*

2,29 (0,16)*

330 (25)

MB

35,7 (0,45)

174 (13)

-0,33 (0,06)

98,02 (0,07)

5,19 (0,11)

1,82 (0,21)

301 (56)

 

 

 

 

 

 

 

 

LBQ

41,6 (0,55)

150 (4)*

-0,38 (0,004)

98,83 (0,06)

4,83 (0,12)*

1,63 (0,07)

224 (13)

LB

41,4 (0,55)

195 (4)

-0,40 (0,028)

98,96 (0,07)

5,32 (0,13)

1,70 (0,14)

245 (35)

 

For DR the required 20µm (LB, LBQ, MB, MBQ) or 50µm line (HB, HBQ) and for CG the required 50µm line for all materials was visible for all specimens.

 

Conclusion: the new quick-setting polyethers are similar to controls despite small differences. HBQ reveals lower CO and higher RD. TS was improved for MBQ/HBQ. Fast set (WT) in combination with higher rigidity (indicated by lower SC) could make this materials especially attractive for dual-arch technique impressions.


Division: Continental European, Israeli, Scandinavian Divisions Meeting
Meeting: 2004 Continental European, Israeli, Scandinavian Divisions Meeting (Istanbul, Turkey)
Location: Istanbul, Turkey
Year: 2004
Final Presentation ID: 138
Abstract Category|Abstract Category(s): Scientific Program
Authors
  • Gangnus, Bernd  ( 3M ESPE AG, Seefeld, N/A, Germany )
  • Klettke, Thomas  ( 3M ESPE AG, Seefeld, N/A, Germany )
  • Fuehrer, Cornelia  ( 3M ESPE AG, Seefeld, N/A, Germany )
  • Kuppermann, Bernd  ( 3M ESPE AG, Seefeld, N/A, Germany )
  • Rombach, Andreas  ( 3M ESPE AG, Seefeld, N/A, Germany )
    • SESSION INFORMATION
    Poster Session
    Dental Materials: Endodontics, Impression Materials, Surface Properties
    08/27/2004