The quality of impressions for crowns and bridges: an assessment of the work received at three commercial dental laboratories. Assessing qualities of impressions that may lead to occlusal discrepancies with indirect restorations

David Storey, Trevor Coward

    Research output: Contribution to journalArticlepeer-review

    5 Citations (Scopus)

    Abstract

    There are few published studies that directly assess the quality of impressions for crowns and bridges in the UK. This paper considers aspects of impression quality with particular attention to factors causing potential occlusal discrepancies in the final restoration. To this end three dental laboratories were visited over a 3-month period. All impressions for conventional crown and bridgework that arrived on the days of the visits were examined and assessed against criteria defined on a custom-designed assessment form. A total of 206 impression cases were considered in this study. Flexible impression trays were used for 65% of working impressions. Their use was more common for NHS work than for private work. 31.9% of all alginate impressions examined were not adequately fixed to the tray. Visible contamination of impressions was not uncommon.
    Original languageEnglish
    Pages (from-to)11-18
    Number of pages8
    JournalEUROPEAN JOURNAL OF PROSTHODONTICS AND RESTORATIVE DENTISTRY
    Volume22
    Issue number1
    DOIs
    Publication statusPublished - Mar 2014

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