Crowns and other extra-coronal restorations: impression materials and technique

Br Dent J. 2002 Jun 29;192(12):679-84, 687-90. doi: 10.1038/sj.bdj.4801456.


Well-fitting indirect restorations can only be made if there are accurate models of the oral tissues available, made from high quality impressions. Waiting for an impression to set may be more stressful for the dentist than the patient. Should the impression need to be repeated there is the embarrassment of having to explain this to the patient, the cost implications of material and time wasted and the aggravation of running late for the next appointment. Yet, if a 'Nelsonian' eye is turned to a defective impression we can only expect a substandard restoration in return.

MeSH terms

  • Crowns*
  • Dental Impression Materials*
  • Dental Impression Technique*
  • Disinfection
  • Humans
  • Problem Solving


  • Dental Impression Materials