Influence of impression technique and material on the accuracy of multiple implant impressions

Int J Prosthodont. 2008 Jul-Aug;21(4):299-301.

Abstract

This study aimed to analyze the influence of impression technique (pick-up versus reposition) and material on the accuracy of the working cast. Sixty impressions were made with 3 materials from a master cast with 4 XiVE implants. The changes in the implant axis direction, rotation, and 3-dimensional shift were assessed. The pick-up technique showed significantly (P < .05, U test) lower values for axis direction and 3D shift but higher values for rotation than the reposition technique. The differences between the materials were not significant (P > .05, H test). It can be concluded that the impression technique-in contrast to the impression material-has a significant influence on transfer accuracy.

MeSH terms

  • Dental Implants*
  • Dental Impression Materials*
  • Dental Impression Technique*
  • Ethers
  • Humans
  • Models, Dental*
  • Polyvinyls
  • Reproducibility of Results
  • Siloxanes
  • Statistics, Nonparametric

Substances

  • Dental Implants
  • Dental Impression Materials
  • Ethers
  • Polyvinyls
  • Siloxanes
  • vinyl polysiloxane