Detail Reproduction of Elastomeric Materials: Effect of Viscosity and Groove Geometry

  • NZN Mahmood Centre of Comprehensive Care Studies, Faculty of Dentistry, Universiti Teknologi MARA Sg. Buloh Campus, Jalan Hospital, 47000 Sungai Buloh, Malaysia
  • NHA Kasim Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
  • M Azuddin Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
  • NLA Kassim Faculty of Dentistry, International Islamic University of Malaysia, 68100 Kuala Lumpur, Malaysia


Objective: To evaluate the effect of type of viscosity and groove on surface detail reproduction of elastomeric impression materials. Methods: Two polyvinylsiloxane and polyether elastomeric impression materials were investigated. An aluminium cylindrical reference block with V- and U-shaped grooves of 1 mm and 2 mm in depth was machined using CAD-CAM system. Impressions of the block were taken to produce 35 master dies. Each die was immersed in distilled water for 5 minutes prior to impression making. Surface topography of the dies and impressions were captured using Alicona Imaging System. Mean difference in depth between the master dies and corresponding impressions’ grooves were analyzed. Results: Type of viscosities and groove showed significant main effects on surface detail (p < .01), but no significant interaction was observed between the two (p > .01). Express™ putty/light exhibited the lowest mean difference in depth for all grooves. The highest mean difference for U1 (38.3μm ± 21.55), U2 (52.96μm ± 30.39),V1 (45.02μm ± 34.82) and V2 (58.44μm ± 44.19) was obtained from Impregum medium, Aquasil medium, Impregum™ heavy/light and Impregum™ heavy/light groups respectively. Conclusion: Express putty/light-bodied material produced the best surface detail, and Ushaped groove showed superior detail reproduction.

How to Cite
MAHMOOD, NZN et al. Detail Reproduction of Elastomeric Materials: Effect of Viscosity and Groove Geometry. Compendium of Oral Science, [S.l.], v. 2, p. 21-31, sep. 2015. ISSN 2637-0611. Available at: <>. Date accessed: 07 oct. 2022. doi:
Original Article