Evaluation of fit and efficiency of CAD/CAM fabricated all-ceramic restorations based on direct and indirect digitalization: a double-blinded, randomized clinical trial

Ahrberg, Danush; Lauer, Hans–Christoph; Ahrberg, Martin; Weigl, Paul

doi:10.1007/s00784-015-1504-6

Cited by 133 publications

(150 citation statements)

References 46 publications

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“…Furthermore, patients' satisfaction with digital impressions was significantly higher than with conventional impressions [20]. Although both direct and indirect digitalization facilitates the fabrication of single crowns and three-unit FDPs with clinically acceptable marginal fit.…”

Section: Discussionmentioning

confidence: 92%

Esthetic Restoration of Two Severely Decayed Maxillary Central Incisors: A Case Report

Saafi¹,

Debbabi²,

Chakroun³

et al. 2017

Journal of Oral Health and Dental Science

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Today, patients are increasingly interested in metal-free restoration. Restoration of an anterior root-filled tooth with little remaining coronal tooth tissue can use a post to retain a core enabling definitive restoration. Post material has been, until recently, primarily metal--be it cast or prefabricated. Currently, fiber-posts are promoted as being advantageous due to a favorable failure mechanism which may protect the root from fracture [1]. Endodontic posts are necessary to provide adequate retention and support when no sufficient remaining structure is available to retain the core. There are different materials and techniques to construct post-andcore, but there is no consensus about which one promotes better stress distribution on the remaining tooth structure [2]. The new ceramics used for final crowns by CAD/CAM technique associate aesthetic and good mechanical qualities, biocompatibility, and accurate marginal fit and low invasive preparation. Abstract Esthetic Restoration of Two Severely Decayed Maxillary

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Section: Discussionmentioning

confidence: 92%

Esthetic Restoration of Two Severely Decayed Maxillary Central Incisors: A Case Report

Saafi¹,

Debbabi²,

Chakroun³

et al. 2017

Journal of Oral Health and Dental Science

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“…However, accuracy, which represents trueness, is difficult to evaluate in vivo because the real dimensions of the test participant, the gold standard (ISO 5725–1) [27,28], cannot be easily measured in the oral cavity of patients. Therefore, in vivo evaluations of accuracy are often performed by measuring the fit of final restorations [3,7,20,29,30]. Studies have reported clinically acceptable fit of restorations fabricated using a digital impression technique and when compared to restorations fabricated using conventional impressions [6,31–34].…”

Section: Discussionmentioning

confidence: 99%

In vivo evaluation of inter-operator reproducibility of digital dental and conventional impression techniques

et al. 2017

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PurposeThe aim of this study was to evaluate and compare the inter-operator reproducibility of three-dimensional (3D) images of teeth captured by a digital impression technique to a conventional impression technique in vivo.Materials and methodsTwelve participants with complete natural dentition were included in this study. A digital impression of the mandibular molars of these participants was made by two operators with different levels of clinical experience, 3 or 16 years, using an intra-oral scanner (Lava COS, 3M ESPE). A silicone impression also was made by the same operators using the double mix impression technique (Imprint3, 3M ESPE). Stereolithography (STL) data were directly exported from the Lava COS system, while STL data of a plaster model made from silicone impression were captured by a three-dimensional (3D) laboratory scanner (D810, 3shape). The STL datasets recorded by two different operators were compared using 3D evaluation software and superimposed using the best-fit-algorithm method (least-squares method, PolyWorks, InnovMetric Software) for each impression technique. Inter-operator reproducibility as evaluated by average discrepancies of corresponding 3D data was compared between the two techniques (Wilcoxon signed-rank test).ResultsThe visual inspection of superimposed datasets revealed that discrepancies between repeated digital impression were smaller than observed with silicone impression. Confirmation was forthcoming from statistical analysis revealing significantly smaller average inter-operator reproducibility using a digital impression technique (0.014± 0.02 mm) than when using a conventional impression technique (0.023 ± 0.01 mm).ConclusionThe results of this in vivo study suggest that inter-operator reproducibility with a digital impression technique may be better than that of a conventional impression technique and is independent of the clinical experience of the operator.

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“…7 A recent in vitro trial evaluated the difficulty level and the operator's perception of 30 dental students and 30 experienced clinicians when making digital and conventional implant impressions. 12 The difficulty level of optical impressions was similar between the student and the clinician groups.…”

Section: Discussionmentioning

confidence: 99%

“…6 It was concluded that the digital pathway may shorten the duration of the overall clinical treatment and technical production process achieving a beneficial cost-benefit ratio. Another clinical study comparing the time efficiency of digital and conventional impressions for the fabrication of tooth-supported restorations 7 found that the quadrant optical impressions are significantly less time consuming than complete-arch conventional impressions.…”

Section: Introductionmentioning

confidence: 99%

Randomized controlled within-subject evaluation of digital and conventional workflows for the fabrication of lithium disilicate single crowns. Part I: digital versus conventional unilateral impressions

Benić

Mühlemann

Fehmer

et al. 2016

The Journal of Prosthetic Dentistry

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Evaluation of fit and efficiency of CAD/CAM fabricated all-ceramic restorations based on direct and indirect digitalization: a double-blinded, randomized clinical trial

Abstract: The results show that a direct, intraoral, digitalized impression technique is more accurate and efficient when compared with conventional impressions in fabricating single crowns and three-unit FDPs.

Cited by 133 publications

References 46 publications

Esthetic Restoration of Two Severely Decayed Maxillary Central Incisors: A Case Report

Esthetic Restoration of Two Severely Decayed Maxillary Central Incisors: A Case Report

In vivo evaluation of inter-operator reproducibility of digital dental and conventional impression techniques

Randomized controlled within-subject evaluation of digital and conventional workflows for the fabrication of lithium disilicate single crowns. Part I: digital versus conventional unilateral impressions

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