Fitness of self-glazed zirconia onlays using conventional and digital impressions

Qian, Kun; Li, Bingqing; Pu, Tingting; Bai, Tianyi; Liu, Yihong

doi:10.1080/17436753.2022.2069988

Cited by 3 publications

(3 citation statements)

References 48 publications

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“…Qian et al used Geomagic Qualify 12 to get the best fit alignment of the two data and calculated the root mean square for the whole internal surface by considering two different regions of interest, axial and pulp walls. The marginal fit was evaluated in 8 different regions [52]. Zimmerman et al, using Oracheck software, firstly superimposed the two files through best fit alignment, then selected three different areas of interest and matched about 20.000 points per surface, calculating the distances through software algorithm [64].…”

Section: Discussionmentioning

confidence: 99%

“…A 2D analysis was carried out, but an inconsistent number of points was assessed by both the authors. 3D analysis by using digital scanning devices and software is the only method that made it possible to measure easily more than 50 points, by selecting a more consistent number of points for linear measurements, or by using the best fit alignment of the scan data and considering different regions of interest for fit assessment, as shown by Yang et al [63], Qian et al [52], and Zimmerman et al [64].…”

Section: Discussionmentioning

confidence: 99%

“…direct view with optical or electronic scanning, used by eleven studies [44][45][46][47][48][49][50][51][52][53][54]; -indirect view on epoxy resin replicas, used by two studies [55,56]; -silicone replica technique and optical scanning, used by four studies [57][58][59][60]; -micro-CT analysis, used by two studies [61,62]; -silicone replica technique and 3D analysis, used by three studies [63,64]; -triple scan technique, used by one study [65]. Internal fit was assessed by 9 studies using one of the following methods:…”

Section: Description Of the Studiesmentioning

confidence: 99%

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Assessment Methods for Marginal and Internal Fit of Partial Crown Restorations: A Systematic Review

Di Fiore,

Zuccon,

Carraro

et al. 2023

JCM

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Background: Different methods are used for the analysis of marginal and internal fit of partial crowns, but not all of them are applicable for in vivo studies. The aim of this review is to search the available methods, described in the current literature, to assess marginal and internal fit in partial crowns. Methods: an electronic search was performed on Pubmed and Web of Science databases to find studies published from 1 January 2017 up to 2 March 2023, following PRISMA guidelines and Cochrane handbook for systematic reviews. The search strategy applied was: “(marginal) AND (fit OR gap OR adaptation OR discrepancy) AND (inlay OR onlay OR partial crown)”. In vitro studies which evaluated marginal and internal fit on CAD CAM or 3D printed partial crowns were included in this review. Quality of the studies was assessed by using Quality Assessment Tool For In Vitro Studies (QUIN tool). Results: 22 studies were included. Among conventional methods, direct view with microscope, indirect view on resin replicas, and silicone replica technique (SRT) were used. Considering new digital methods, micro-CT, SRT 3D and triple scan technique (TST) were applied. Conclusions: Among 2D methods, direct view technique is the most used marginal fit analysis. For a more comprehensive evaluation, a 3D digital analysis is suggested. SRT and indirect view are the only 2D methods available for in vivo analysis. A protocol for the application of TST for assessment in vivo is now available, but no studies are reported in literature yet.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Description Of the Studiesmentioning

confidence: 99%

See 1 more Smart Citation

Assessment Methods for Marginal and Internal Fit of Partial Crown Restorations: A Systematic Review

Di Fiore,

Zuccon,

Carraro

et al. 2023

JCM

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Accuracy of Intraoral Scanner Systems for Fabricating Inlay, Onlay, and Veneer Restorations: A Systematic Review and Meta‐Analysis

Revilla‐León,

Alonso Pérez‐Barquero,

Barmak

et al. 2024

J Esthet Restor Dent

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PurposeTo evaluate the accuracy of intraoral scanners (IOSs) for fabricating inlay, onlay, and veneer restorations.Materials and MethodsA literature search was completed in five databases: PubMed/Medline, Scopus, Embase, Web of Science, and Cochrane. A manual search was also conducted. Two methods have been used to assess the accuracy of IOSs for fabricating inlay, onlay, and veneer restorations: accuracy of the definitive virtual casts and the marginal and internal discrepancies of inlay, onlay, and veneer restorations fabricated by using IOSs. Included articles were classified into two groups: definitive virtual casts accuracy and restoration fit. Two investigators evaluated the studies independently by applying the Joanna Briggs Institute critical appraisal. A third examiner was consulted to resolve any lack of consensus.ResultsThirty four articles were included: 17 analyzed the accuracy of definitive virtual casts and 17 assessed the marginal and internal discrepancies. Regarding the accuracy of definitive virtual casts, a trueness of 27.47 μm (p < 0.001) in the inlay subgroup and 64.15 μm (p < 0.001) in the onlay subgroup were found among the IOSs tested. For digitizing inlay preparations, a trueness of 12.29 μm (p < 0.001) in the Primescan, 69.34 μm (p < 0.001) in the Omnicam, 38.39 μm (p < 0.001) in the Trios 3, 52.96 μm (p < 0.001) in the Trios, and 28.90 μm (p < 0.001) in the CS3500 were found. A trueness of 53.00 μm (I2 = 99%, p < 0.001) in the Omnicam. Also, a precision of 19.88 μm (p < 0.001) in the inlay subgroup and 19.69 μm (p < 0.001) in the onlay subgroup was obtained. Furthermore, a nonsignificant test result for subgroup differences (p = 0.06) in the marginal discrepancy between conventional and IOS methods was found with a significant heterogeneity (I2 = 99%, p < 0.001). However, a significant test result for subgroup differences (p < 0.001) in the internal discrepancy values was found with a significant heterogeneity (I2 = 72%, p < 0.001).ConclusionsIOSs and restoration type influenced the accuracy of the definitive virtual casts. A Better trueness and worse precision was found on the definitive virtual cast of inlay restorations when compared with those of onlay restorations. The impression method used did not impact the marginal discrepancy of inlay and onlay restorations. However, a higher internal discrepancy was found in the inlay and onlay restorations fabricated by using conventional methods, but the discrepancy was not significant. Studies are needed to assess the accuracy of definitive virtual casts for fabricating veneer restorations captured by using IOSs and to measure the fit of the veneer restorations fabricated by using IOSs.Clinical SignificanceIntraoral scanners provide a reliable method for fabricating inlay and onlay restorations. The accuracy of IOSs for fabricating veneer restorations remains uncertain.

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Evaluation of the trueness and precision of ceramic laminate veneers fabricated with four computer-aided manufacturing methods

Nguyen,

Vo,

Nguyen

et al. 2024

Advances in Applied Ceramics: Structural, Functional and Biocer

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The accuracy of computer-aided design/computer-aided manufacturing (CAD/CAM) methods plays an important role in the clinical success of ceramic veneers. This study aimed to evaluate the impact of different CAD/CAM methods, including subtractive, hybrid, and additive manufacturing, on the trueness and precision of ceramic veneers. A typodont central incisor was prepared for a laminate veneer, followed by the design of a veneer with CAD software. Ceramic veneers were fabricated with four different CAD/CAM methods, including milled lithium disilicate, pressed lithium disilicate with three-dimensional (3D) printed wax patterns, milled zirconia, and 3D-printed zirconia. All veneers were scanned and imported to 3D inspection software for trueness and precision evaluation. Laminate veneers fabricated with all investigated methods exhibited clinically acceptable trueness and precision. Pressed lithium disilicate veneers from 3D-printed wax patterns and 3D-printed zirconia veneers showed lower precision of the fitting surfaces compared to their milled counterparts.

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Fitness of self-glazed zirconia onlays using conventional and digital impressions

Cited by 3 publications

References 48 publications

Assessment Methods for Marginal and Internal Fit of Partial Crown Restorations: A Systematic Review

Assessment Methods for Marginal and Internal Fit of Partial Crown Restorations: A Systematic Review

Accuracy of Intraoral Scanner Systems for Fabricating Inlay, Onlay, and Veneer Restorations: A Systematic Review and Meta‐Analysis

Evaluation of the trueness and precision of ceramic laminate veneers fabricated with four computer-aided manufacturing methods

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