A Combination of CAD/CAM–Fabricated Zirconia Milled Bars and a Gold-Electroplated Superstructure Framework for an Implant- Supported Overdenture: A Case Report

Ostrc, Tadej; Berce, Blaž; Rener‐Sitar, Ksenija

doi:10.11607/ijp.6928

Cited by 2 publications

(4 citation statements)

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“…Zirconia is used in prosthetic restorations due to its exceptionally low thermal conductivity, increased corrosion resistance, chemical inertness, as well as its excellent flexural strength and hardness. 19,20 Zirconia is used for veneers, primary telescopic crowns, full-and partial-coverage fixed restorations, inlays, onlays, post and core, implants, implant attachments, and abutments. In-vitro studies have shown that zirconia is quickly becoming one of the primary prosthetic materials used worldwide.…”

Section: Introductionmentioning

confidence: 99%

“…For the retention of removable dental prostheses, there are currently several types of zirconia attachments available: an extracoronal attachment, a ball attachment for overdentures as a component of a zirconia post, and a bar attachment. [19][20][21][22][23] Recent advancements in computer-aided design and manufacturing (CAD/CAM) have made it possible to use zirconia for many dental restorations. Zirconia milling with CAD/CAM-controlled milling equipment is used to fabricate zirconia restorations.…”

Section: Introductionmentioning

confidence: 99%

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Strains Induced by Zirconia and Metal Resin Bonded Attachments Versus Extracoronal Attachment With Full Veneer Retainer in Maxillary Distal Extension Removable Partial Dentures

Aswad

Youssef

2022

Egyptian Dental Journal

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Aim of the study: The aim of this study was to assess the strains transferred by zirconia and metal resin-bonded attachments (RBAs) to the maxillary distal extension removable partial denture (RPD) supporting structures and compare them with the strains generated by the extracoronal attachment with full veneer retainers. Materials and Methods: Three identical partially edentulous models that were created with a 3D printing technology. The virtual models for the retainers and the three attachments were designed using digital software. Model (1): Zirconia resin-bonded attachment (ZRBA). Model (2): Metal resin-bonded attachment (MRBA). Model (3): Extracoronal attachment with full veneer metal ceramic retainer (ECFV). Using 3D printing technology, the wax patterns for the three types of attachments were printed, and the retainers were constructed and cemented on their models. This was followed by the fabrication of attachment-retained removable partial dentures on the three printed models. Each RPD was subjected to a compressive static load of 100N using a universal testing machine. Then the strain values were recorded. Results: On bilateral loading, there were significant differences in the recorded strains at the three strain gauge locations between RBAs and ECFV. At the SG-3 location, there was no significant difference between the strains generated by ZRBA and MRBA. During unilateral loading, the results revealed statistically significant differences between the three attachments at the loading and non-loading sides. Conclusion: With the limitations of this study, it can be concluded that, in distal extension maxillary RPD, there is no significant difference between the strains generated by zirconia and metal resin bonded attachments. While the extracoronal attachment with full veneer retainers applied less strains on RPD supporting structures than resin bonded attachments.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Strains Induced by Zirconia and Metal Resin Bonded Attachments Versus Extracoronal Attachment With Full Veneer Retainer in Maxillary Distal Extension Removable Partial Dentures

Aswad

Youssef

2022

Egyptian Dental Journal

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“…Conversely, zirconia exhibits markedly superior mechanical properties compared to other prosthetic ceramic materials, on a level with those of metals used in porcelain fused to metal bridges. Zirconia offers high mechanical properties including fracture toughness, flexural strength and hardness as well as good biocompatibility, esthetic quality, low thermal conductivity and chemical inertness [25,26] .…”

Section: Introductionmentioning

confidence: 99%

“…These include extra coronal attachments, ball attachments integrated into a zirconia post for overdentures, and bar attachments. Yet, the existing literature lacks sufficient information concerning the use of zirconia extra-coronal attachments for retaining RPDs [25][26][27] .…”

Section: Introductionmentioning

confidence: 99%

In-Vitro Evaluation of Strain Induced by Various Extra Coronal Attachment Materials in Removable Partial Dentures Restoring Mandibular Kennedy Class I Following Clinical Simulation for One Year

Shawky

2024

Egyptian Dental Journal

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Purpose:The objective of this study was to evaluate the strain induced by various extra coronal attachment materials retaining removable partial dentures restoring mandibular Kennedy class I following clinical simulation for one year. Materials and Methods:Twelve identical models, fabricated by 3D printing, representing Kennedy class I mandibular partially edentulous cases with bilateral first premolars as primary abutments were used. Each model had four removable dies; canines and first premolars bilaterally. On these dies, bilateral splinted crowns were fabricated and grouped according to the extra coronal attachment material used (PEEK/BioHPP, zirconia and metal). Each group included four models, each model was designed having four slots for strain gauges (two on each side). These slots were positioned 1mm distal to the 1 st premolar (SG1 and SG3) and at the edentulous ridge (SG2 and SG4) 1 cm away from the first one. Removable partial dentures were fabricated, and a universal testing machine was employed to assess the strain induced under unilateral and bilateral loading conditions. This assessment was conducted both prior to and after clinical simulation for one year. The clinical simulation involved chewing simulator sessions and cycles of insertion and removal for the denture.Results: PEEK (BioHPP) group exhibited the least strain induced, both prior to and after clinical simulation for one year, under both unilateral and bilateral loading conditions. Conclusions: PEEK (BioHPP) extra coronal attachment used for retaining removable partial denture provides more favorable stress dissipation in comparison to zirconia and metal attachments.

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A Combination of CAD/CAM–Fabricated Zirconia Milled Bars and a Gold-Electroplated Superstructure Framework for an Implant- Supported Overdenture: A Case Report

Cited by 2 publications

References 0 publications

Strains Induced by Zirconia and Metal Resin Bonded Attachments Versus Extracoronal Attachment With Full Veneer Retainer in Maxillary Distal Extension Removable Partial Dentures

Strains Induced by Zirconia and Metal Resin Bonded Attachments Versus Extracoronal Attachment With Full Veneer Retainer in Maxillary Distal Extension Removable Partial Dentures

In-Vitro Evaluation of Strain Induced by Various Extra Coronal Attachment Materials in Removable Partial Dentures Restoring Mandibular Kennedy Class I Following Clinical Simulation for One Year

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