CAD/CAM Constructed Poly(etheretherketone) (PEEK) Framework of Kennedy Class I Removable Partial Denture: A Clinical Report

Harb, Islam E.; Abdel-Khalek, A.; Hegazy, Salah

doi:10.1111/jopr.12968

Cited by 81 publications

(94 citation statements)

References 12 publications

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“…al. (27) also concluded that, the low specific weight of PEEK material permits the fabrication of lighter prostheses with good functionality, this will be in agreement with the results of our study.…”

Section: Discussionsupporting

confidence: 93%

“…al. (16,27) who stated that, digital strategies widen the scope of therapeutic applications for partial dentures as a result of improved design and production control, new materials, and improved efficiencies with adequate fit that will likely enhance outcomes and improve patient experiences. However, digital fabrication is higher in cost than the conventional lost-wax fabrication technique and metallic RPD frameworks, thus it may be restricted for partially edentulous patients with financial constraints.…”

Section: Discussionmentioning

confidence: 99%

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Digital PEEK framework and patient satisfaction compared to conventional metal framework in removable partial dentures. A clinical trial

Mohamed

Rasha²

2019

Egyptian Dental Journal

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Introduction: Utilization of removable partial dentures (RPD) is inevitable in some patients that are not indicated for any other treatment option, thus patient satisfaction with this line of treatment is of great importance. However, a notable need exists to advance materials and fabrication technologies due to the undesirable health outcomes linked with current RPDs. Aim: In this study patient satisfaction with conventionally manufactured metal RPD framework, was compared with their satisfaction using digitally milled PEEK (Juvora) framework. Methods: Ten patients were selected having class I partially edentulous mandibles. A conventional metal framework RPD was constructed for each patient, then another RPD with milled PEEK framework was digitally fabricated for each one of them. Each patient had the chance to use each denture for three months, then questionnaires were filled to assess their satisfaction. Results: The questionnaires were statistically analyzed and resulted in more patients' satisfaction with the digital PEEK framework RPD, than with conventional metallic RPD framework. Conclusion: PEEK material increases patients' satisfaction with RPDs than the conventional metal framework material, thus decreasing patients' complaints from removable appliances.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Digital PEEK framework and patient satisfaction compared to conventional metal framework in removable partial dentures. A clinical trial

Mohamed

Rasha²

2019

Egyptian Dental Journal

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“…The clasp arm still fitted well without any deformation and a high subjective satisfaction was expressed by both the practitioner and the patient [39]. Further advantages include the low weight of PEEK prostheses, the tooth-similar color, a reportedly good fit and high retention [40,41], and a protective effect on the periodontal ligament [42]. However, the indication of PEEK as a framework material remains controversial, as its stability in a free-end situation under masticatory forces is not conducive for a RDP's stability [42].…”

Section: Discussionmentioning

confidence: 95%

Is the high-performance thermoplastic polyetheretherketone indicated as a clasp material for removable dental prostheses?

et al. 2020

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Objectives To investigate the retention force of polyetheretherketone (PEEK) removable dental prosthesis clasps in comparison with a cobalt-chrome-molybdenum control group after storage in artificial saliva. Materials and Methods Clasps were milled (Dentokeep (PEEKmilled1), NT digital implant technology; breCAM BioHPP Blank (PEEKmilled2), bredent), pressed (BioHPP Granulat for 2 press (PEEKpressed), bredent), or cast (remanium GM 800+ (cobalt-chrome-molybdenum), Dentaurum); N = 60, n = 15/subgroup. Retention force was examined 50 times/specimen in a pull-off test using the universal testing machine (Zwick 1445), where pull-off force was applied with a crosshead speed of 5 mm/minute until the maximum force dropped by 10%, at different aging levels: (1) initial, after storage in artificial saliva for (2) 90 and (3) 180 days. Statistical analysis was performed using one-way ANOVA followed by post hoc Scheffé-test and mixed models (p < 0.05). Results Cobalt-chrome-molybdenum presented the highest retention force. No differences were observed between polyetheretherketone materials. Cobalt-chrome-molybdenum showed a significant decrease of its values after artificial aging, while polyetheretherketone materials presented similar results over the course of aging. Regarding a repetitive insertion and removal, even though PEEKmilled2 and cobalt-chrome-molybdenum showed an initial increase, ultimately, a decrease in retention force was observed for all tested groups. Conclusions Although the control group showed significantly higher results, the retention force of polyetheretherketone materials indicate a potential clinical application. Neither the manufacturing process nor artificial aging showed an impact on the retention force of polyetheretherketone clasps. Clinical relevance Mechanical properties of novel removable dental prosthesis clasp materials devised to meet the growing esthetic demands of patients need to be investigated to ensure a successful long-term clinical application.

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“…PEEK as a material is prone to temperature deformations during manufacturing which may influence the fit of appliances [23]. Decreasing the amount of retentive structures on the plate by adapting the CAD-design might decrease the heat-energy produced during manufacturing [24]. If a plate detaches a few seconds after insertion, this might be attributed to its greater weight.…”

Section: Discussionmentioning

confidence: 99%

Technical note on introducing a digital workflow for newborns with craniofacial anomalies based on intraoral scans - part I: 3D printed and milled palatal stimulation plate for trisomy 21

et al. 2020

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Background: Advanced digital workflows in orthodontics and dentistry often require a combination of different software solutions to create patient appliances, which may be a complex and time-consuming process. The main objective of this technical note is to discuss treatment of craniofacial anomalies using digital technologies. We present a fully digital, linear workflow for manufacturing palatal plates for infants with craniofacial anomalies based on intraoral scanning. Switching to intraoral scanning in infant care is advantageous as taking conventional impressions carries the risk of impression material aspiration and/or infections caused by material remaining in the oronasal cavity. Material and methods: The fully digital linear workflow presented in this technical note can be used to design and manufacture palatal plates for cleft palate patients as well as infants with functional disorders. We describe the workflow implemented in an infant with trisomy 21. The maxilla was registered using a digital scanner and a stimulation plate was created using dental CAD software and an individual impression tray module on a virtual model. Plates were manufactured using both additive and subtractive methods. Methacrylate based light curing resin and Poly-Ether-Ether-Ketone were the materials used. Results: The palatal area was successfully scanned to create a virtual model. The plates fitted well onto the palatal area. Manual post-processing was necessary to optimize a functional ridge along the vestibular fold and remove support structures from the additively manufactured plate as well as the milled plate produced from a blank. The additively manufactured plate fitted better than the milled one. Conclusion: Implementing a fully digital linear workflow into clinical routine for treatment of neonates and infants with craniofacial disorders is feasible. The software solution presented here is suitable for this purpose and does not require additional software for the design. This is the key advantage of this workflow, which makes digital treatment accessible to all clinicians who want to deal with digital technology. Whether additive or subtractive manufacturing is preferred depends on the appliance material of choice and influences the fit of the appliance.

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CAD/CAM Constructed Poly(etheretherketone) (PEEK) Framework of Kennedy Class I Removable Partial Denture: A Clinical Report

Cited by 81 publications

References 12 publications

Digital PEEK framework and patient satisfaction compared to conventional metal framework in removable partial dentures. A clinical trial

Digital PEEK framework and patient satisfaction compared to conventional metal framework in removable partial dentures. A clinical trial

Is the high-performance thermoplastic polyetheretherketone indicated as a clasp material for removable dental prostheses?

Technical note on introducing a digital workflow for newborns with craniofacial anomalies based on intraoral scans - part I: 3D printed and milled palatal stimulation plate for trisomy 21

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