Comparison of marginal fit of zirconia copings manufactured with the use of two CAD/CAM systems Cerec InLab (Sirona®) CAD/CAM Zirkonzahn (Zirkonzahn®) and Zirkograph 025 ECO pantographic system (manual milling system) (Zirkonzahn®)

Suárez, María José Jiménez; Vernimmen, Fernando Sandoval; Merchán, Estefanía Alexandra Rodríguez

doi:10.1016/j.rodmex.2015.10.014

Cited by 3 publications

(6 citation statements)

References 15 publications

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“…The findings of this research disagree with Jimenez SMJ et al results in which they stated that CAD/CAM Zirkonzahn system displayed lower absolute marginal discrepancy when compared with CAD/CAM Cerec InLab system, but both were within the clinically accepted range (33).…”

Section: Discussioncontrasting

confidence: 99%

“…For standardization the three CAD/CAM systems used in this study were all same sub-category five-axis milling units (dental laboratory type) not a chairside machines, depending on previous studies that have proven that Five-axis milling machines have been found to improve the productivity and precision when compared to three-axis or four-axis (chairside) milling systems. (33) Giving the elements associated to the digitization of different systems, it is noted that there are statistically remarkable differences among all evaluated CAD-CAM groups. Scanning finite resolution is an obstacle to all systems.…”

Section: Discussionmentioning

confidence: 99%

“…Another point to be mentioned is that due to the contraction of the siloxane polyvinyl used in the replication technique, marginal discrepancy measures could indeed be lower than real measurements. (33) In later research projects, it is suggested to additionally conduct other marginal fit determination techniques such as cementation crosssectioned techniques.…”

Section: Discussionmentioning

confidence: 99%

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Comparison of the Fit Accuracy of Hybrid Ceramic Prostheses Generated By Three CAD-CAM Systems.

Abdelsalam

Aboushady

Hussein

2021

Alexandria Dental Journal

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BACKGROUND: Marginal and internal fit are believed to be very crucial guideline in the assessment of ceramic restorations and are a remarkable requirement for the long-term performance of fixed dental prostheses. PURPOSE: Was to assess the effect of different CAD-CAM systems on the marginal and internal adaptation of hybrid ceramic restorations. MATERIALS AND METHODS: Lower right six of a typodont resin cast with a 1.0 mm circumferential chamfer finish line, a 2.0 mm occlusal clearance, and an average of 10-12° convergence angle was prepared. This master die was duplicated to thirty acrylic resin dies milled from PMMA discs using CAD-CAM technique. Vita Enamic monolithic crowns were manufactured using three CAD-CAM systems Ceramill, Zirkonzahn and CEREC systems (n=10). Replica technique procedure was used to assess marginal and internal fit of the fabricated prostheses by placing light body impression material between the master die and the restoration and then measuring its thickness at seven points using digital microscope. RESULTS: Measurements were collected for each group and appropriate statistical analysis was carried out. CONCLUSION: CEREC system showed relatively lower marginal and internal discrepancy in a comparison with the other systems. Therefore, there is a significant difference among the three systems.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Comparison of the Fit Accuracy of Hybrid Ceramic Prostheses Generated By Three CAD-CAM Systems.

Abdelsalam

Aboushady

Hussein

2021

Alexandria Dental Journal

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“…This could be imputed to the digitization factors related to each system. Both systems used are subject to limitations related to the scanning finite resolution (16) . In comparison to Everest, the S600 ARTI scanner of zirconzhan system which uses the red laser technology to capture image from multiple angles for scanning, but with the higher wavelength of red laser, the accuracy of scanner may be reduced.…”

Section: Discussionmentioning

confidence: 99%

Micro- Computed Tomographic Evaluation of Marginal Fit of Different Monolithic all Ceramic Crowns Fabricated Using Two CAD/CAM Systems.

Gawad

El-yassaky

Fathi³

et al. 2019

ADJ-for Girls

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Purpose: the objective of the present in vitro study was to evaluate the effect of two different CAD/CAM systems on the marginal fit of three commercially available dental ceramics using micro-computed tomography. Materials and Methods: one human natural premolar was selected, received a standardized all ceramic preparation and duplicated using two types of die materials. PMMA dies were used for construction of E.max CAD and Vita Enamic monolithic crowns while zirconia dies were used for zirconia crowns. A total of thirty monolithic all-ceramic crowns (N=30) were constructed on the fabricated working dies. These were equally divided into 2 groups (n=15) according to the CAD/CAM system used as follows: group (I): Everest system and group (II): Zircon Zhan system. Each group was further subdivided into 3 subgroups (n=5) according to the ceramic material used into subgroup (E): E.max CAD glass ceramic, subgroup (Z): ice prettau zirconia and subgroup (V): Vita Enamic hybridceramic. Each sample was scanned for fit analysis using a quantitative micro-computed tomography scanner then were analyzed. Results: Everest CAD/CAM system showed statistically significantly lower mean marginal gap distance than ZirconZahn. Either with Everest or ZirconZahn; E.max CAD showed the statistically significantly highest mean vertical marginal gap distance followed by Zirconia while Vita Enamic showed the statistically significantly lowest mean vertical marginal gap distance. Conclusions:Micro-CT technology presents a reliable tool for evaluation of the dental restorations fit. Also, superior marginal fit is achievable with monolithic CAD/CAM hybrid ceramic compared to both zirconia based and glass ceramics. Codex : 26/1904 azhardentj@azhar.edu.eg

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“…With the introduction of CAD/CAM technology, human errors in fabrication techniques are eliminated and marginal gaps were much improved. Factors such as the type of system used for scanning (different digitization techniques), software design (CAD construction), and milling technique (wet versus dry and the number of milling axes) affect the marginal fit (9)(10)(11). Comparison of marginal adaptation levels by using different CAD/CAM systems such as closed systems (CS), i.e., systems that use software and equipment belonging to one single manufacturer and using different open systems as well (OS) are carried out (12)(13)(14).…”

Section: Introductionmentioning

confidence: 99%

Fit Accuracy of Open Versus Closed Cad/Cam Systems Using a Sectional Method

Marey,

Hussein,

Aboushelib

2024

Alexandria Dental Journal

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INTRODUCTION:Marginal fit is critical for the success of dental restorations. Zirconia full coverage restorations can be fabricated either chair-side or in a milling center. OBJECTIVE: To evaluate the fit accuracy of all ceramic restorations fabricated by two different CAD/CAM systems using a sectional method. MATERIAL AND METHODS: A lower first molar was prepared for a full coverage restoration, it was laser scanned (Ceramill map 400) and 24 replicas were milled using acrylic CAD/CAM block (Ceramill TEMP). Half of the dies were scanned using a closed system (CEREC inLab MC X5) while the other half used an open system (Ceramill motion 2). Zirconia restorations (Monolithic Katana zirconia) were milled from each system. Sectional method where each restoration was cut into thin sections (Buehler Isomet 4000 Linear Precision Saw) after cementation by self-adhesive resin cement (RelyX™ Unicem). A stereomicroscope was used for measurement. (n=24 α= 0.05). RESULTS: There was a significant difference (t=2.387, P<0.030) as the open system was better than the closed system at the axial sites. CONCLUSIONS: within the limitations of this study, better marginal qualities were achieved using an open CAD/CAM system.

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Comparison of marginal fit of zirconia copings manufactured with the use of two CAD/CAM systems Cerec InLab (Sirona®) CAD/CAM Zirkonzahn (Zirkonzahn®) and Zirkograph 025 ECO pantographic system (manual milling system) (Zirkonzahn®)

Cited by 3 publications

References 15 publications

Comparison of the Fit Accuracy of Hybrid Ceramic Prostheses Generated By Three CAD-CAM Systems.

Comparison of the Fit Accuracy of Hybrid Ceramic Prostheses Generated By Three CAD-CAM Systems.

Micro- Computed Tomographic Evaluation of Marginal Fit of Different Monolithic all Ceramic Crowns Fabricated Using Two CAD/CAM Systems.

Fit Accuracy of Open Versus Closed Cad/Cam Systems Using a Sectional Method

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