Reproduction of intra-radicular surface anatomy of extracted human teeth: comparison of three different materials using injection technique

Mymensingh Med J. 2010 Apr;19(2):181-4.

Abstract

This in vitro study compared the reproduction of intra-radicular surface anatomy of extracted human teeth taken by silicon, inlay casting wax and acrylic resin using an injection technique to determine which material produced fewer voids. Twenty impressions/patterns using this technique were made for each material and compared with each other on the basis of number, location and size of voids. Length of each dowel impression/ pattern was also compared. The percentage of void free surfaces using silicon, inlay casting wax and acrylic resin were 90%, 100% and 85% respectively. Most of the voids were less than 1mm in size and situated in the middle third of the impression/pattern. There was no significant difference in the length of the impression/ pattern taken by the three materials. Using the injection technique to reproduce the intra-radicular anatomy of the dowel space, all three materials will show predictably good results.

Publication types

  • Comparative Study

MeSH terms

  • Acrylic Resins
  • Analysis of Variance
  • Biomechanical Phenomena
  • Chi-Square Distribution
  • Dental Impression Materials*
  • Dental Impression Technique / instrumentation*
  • Humans
  • Inlay Casting Wax
  • Materials Testing
  • Reproducibility of Results
  • Silicone Elastomers
  • Surface Properties
  • Tooth Extraction

Substances

  • Acrylic Resins
  • Dental Impression Materials
  • Silicone Elastomers
  • Inlay Casting Wax