European Journal of Prosthodontics and Restorative Dentistry

cover art

Cover Date:
March 2007
Print ISSN:
0965-7452
Vol:
15
Issue:
1

The Effect of a Range of Disinfectants on the Dimensional Accuracy and Stability of Some Impression Materials

Abstract - Disinfection of dental impressions should be considered as a routine procedure in dental surgeries and dental laboratories. Disinfectants can have deleterious effects on some properties of impression materials. The aim of this study was to evaluate the dimensional accuracy and dimensional stability of a model dental stone, reproduced from five commonly used impression materials (Aquasil soft putty/Aquasil Ultra LV; Aquasil Monophase; Aquasil Ultra Heavy; Impregum F and Provil putty/ Provil Light CD wash) retained by their adhesives in acrylic resin trays and exposed to three disinfectant solutions (Perform ID; Haz-Tabs and MD 520). Two hundred models were used to investigate the effect of the three disinfectants on the dimensional accuracy of the five impression materials. Five impressions were taken for each impression material for each disinfection treatment group. Measurements were carried out using a High Precision Reflex Microscope. All materials demonstrated a percentage change in dimensions when subjected to no disinfection when compared to the brass master die and all materials demonstrated a percentage change in dimension when subjected to the different disinfection procedures. The results of this study have demonstrated that for all of the materials investigated, the changes in dimensional stability were small in the order of microns. These changes may however be of clinical significance for procedures requiring a high degree of accuracy, for example fixed prosthodontics. The materials respond differently depending on the disinfectant used and it may therefore be appropriate that manufacturers recommend the use of particular disinfectants for their products in order to ensure optimum dimensional accuracy and stability.

KEY WORDS: Disinfection; Dimensional Accuracy and Stability; Impressions

Article Price
£15.00
Institution Article Price
£
Page Start
23
Page End
28
Authors
DC Jagger, RW Vowles, L McNally, F Davis, DJ O’Sullivan

Articles from this issue

  • Title
  • Pg. Start
  • Pg. End

  1. Long-term Survival of Direct and Indirect Restorations Placed for the Treatment of Advanced Tooth Wear
  2. 2
  3. 6

  1. Breakaway Forces of Flat and Domed Surfaced Magfittm Implant Magnet Attachments
  2. 7
  3. 12

  1. The Abrasion of Dental Composite by CobaltChromium Clasps
  2. 13
  3. 18

  1. Fracture Resistance of Roots with Thin Walls Restored Using an Intermediate Resin Composite Layer Placed Between the Dentine and a Cast Metal Post
  2. 19
  3. 22

  1. The Effect of a Range of Disinfectants on the Dimensional Accuracy and Stability of Some Impression Materials
  2. 23
  3. 28

  1. Mathematical Analysis of Occlusal Rest Design for Cast Removable Partial Dentures
  2. 29
  3. 32

  1. Analytical and Electrochemical Evaluation of the in vitro corrosion behavior of Nickel-chrome and Cobaltchrome casting alloys for metal-ceramic restorations.
  2. 33
  3. 40

  1. Apexification with Mineral Trioxide Aggregate: an overview of the material and technique
  2. 41
  3. 45