Dentures: techniques and materials for final impressions

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9 RCTs were included in this Cochrane review of different final-impression techniques and materials for complete and removable partial dentures. The available evidence for the relative benefits of different denture fabrication techniques and final-impression materials is limited and is of low or very low quality.

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Dentures: 1 or 2 step impressions?

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This review compare single step impressions verses two step impression techniques for complete denture construction. 7 RCTs were included and they suggests that a two step approach is not necessary for technical quality, user satisfaction or quality of life.

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Digital impressions for fixed prosthodontics?

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This review of Intraoral digital impressions suggest they provide similar accuracy to conventional elastomeric impressions. However only 2 of the 11 studies included are clinical and these are both small, so the results should be interpreted cautiously.

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Intraoral scanners for digital impressions

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8 small studies were identified for this review of intra-oral scanners for digital impressions. Very little evidence of their validity, repeatability and reproducibility is available to guide practitioners, so further high quality studies are needed.

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Limited available evidence suggests that a one-step impression technique is sufficient for the majority of edentulous patients

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Obtaining an accurate impression of the potential denture supporting area is a key stage in the construction of complete dentures.  Traditionally a two-stage procedure has been recommended.  The aim of this review was to assess the effectiveness of different impression materials and techniques used in complete denture construction. Medline/PubMed and the Cochrane Library were searched together [read the full story…]