Reduction in maxillary complete denture deformation using framework material made by computer-aided design and manufacturing systems

Hada, Tamaki; Suzuki, Tetsuya; Minakuchi, Shunsuke; Takahashi, Hidekazu

doi:10.1016/j.jmbbm.2019.103514

Cited by 20 publications

(26 citation statements)

References 32 publications

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“…PEEK could also be used as a framework material for complete dentures in order to decrease denture deformation responsible for midline fractures [ 43 , 76 ]. However, PEEK frameworks with a thickness of 1 mm could offer only a slight reinforcement to complete dentures, while more rigid materials such as fiber-reinforced composite (FRC), nano-zirconia (N–Zr), cobalt-chromium-molybdenum alloy provide greater reinforcement with a thickness of 0,5 mm [ 43 ]. This finding can be explained by the similar deformation of PEEK and PMMA due to their compararable elastic moduli which are 4 GPa [ 19 ] and 2.7 GPa [ 77 ], respectively.…”

Section: Resultsmentioning

confidence: 99%

The use of PEEK in digital prosthodontics: A narrative review

et al. 2020

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Background: Advanced computer-aided design and computer-aided manufacturing (CAD-CAM) technology led to the introduction of an increasing number of machinable materials suitable for dental prostheses. One of these materials is polyetheretherketone (PEEK), a high performance polymer recently used in dentistry with favorable physical, mechanical and chemical properties. The purpose of this study was to review the current published literature on the use of PEEK for the fabrication of dental prostheses with CAD-CAM techniques. Methods: Electronic database searches were performed using the terms "PEEK", "CAD-CAM", "dental", "dentistry" to identify studies related to the use of PEEK for the fabrication of CAD-CAM prostheses. The search period spanned from January 1990 through February 2020. Both in vivo and in vitro studies in English were eligible. Review articles and the references of the included publications were searched to identify relevant articles. Results: A great number of in vitro studies are available in the current literature pointing out the noticeable properties of PEEK. The use of PEEK has been recommended for a wide range of CAD-CAM fabricated fixed and removable dental prostheses. PEEK was additionally recommended for occlusal splints, intra-radicular posts, implant abutments, customized healing abutments and provisional restorations. However, only a few clinical studies were identified. Conclusions: PEEK could be considered as a viable alternative for CAD-CAM fixed and removable dental prostheses to well-established dental materials. Due to the scarcity of clinical data, clinical trials are needed to assess the longterm performance of PEEK prostheses.

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Section: Resultsmentioning

confidence: 99%

The use of PEEK in digital prosthodontics: A narrative review

et al. 2020

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“…For group II, frames were milled in modified PEEK discs (BioHPP, high performance polymer, Bredent GmbH & Co.KG, Weißenhorner Str. 2, 89250 Senden, Germany) (fig5) .The thickness of both metal and PEEK frames was standardized at 1mm 23 . Record blocks were made on the master casts and Jaw relationships were recorded.…”

Section: Fig (3) the Impression Techniquementioning

confidence: 99%

“…These materials include carbon fibrils, fiber glasses, or rigid polyethylene fiber. Such materials may decrease denture deformation; however, they consume time and less accurate than that constructed by CAD/CAM technologies 23 . Recently, Polyether-ether-ketone (PEEK) which is thermoplastic resin was introduced to be used as a frame for fixed and removable prosthesis instead of metal.…”

Section: Introductionmentioning

confidence: 99%

Metal versus Poly ether-ether ketone (PEEK) framework reinforcements for maxillary palateless ball retained implant overdentures. One year clinical and radiographic outcomes

Kortam

2020

Egyptian Dental Journal

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Objectives: This study aimed to investigate both the clinical and radiographic outcomes of metal and Poly ether-ether ketone (PEEK) framework reinforcement materials for maxillary palateless ball retained implant overdentures after one year follow-up period. Materials and methods: Eight edentulous patients with edentulous maxillary ridges and implant retained mandibular overdentures who complained from lack of retention of their maxillary dentures were classified into 2 groups; group 1 included 4 patients who received palateless maxillary overdentures with cobalt chromium metal reinforcement, group 2 (included 4 patients who received palateless maxillary overdentures with PEEK reinforcement. All patients received 4 implants in canine and second premolar areas of maxilla. After 6 months, overdentures were attached to the fixtures with O/ring attachments. Clinical outcomes included Plaque indices, bleeding indices, depth of probing and implant mobility) and radiographical evaluation included marginal bone resorption. All outcomes were evaluated at prosthesis delivery, 6 months and one year after prosthesis delivery. Results: The survival rate of the implants showed significant difference, as it was 83% and 100% for metal and PEEK groups respectively. Plaque and bleeding scores, as well as pocket depth increased significantly from base line to 12 months. Bone resorption progressed significantly from 6 months to 12 months in both groups. PEEK group showed significantly lower plaque scores, bleeding scores, probing depth and bone resorption than metal one. No significant differences in mobility of the implants in-between observation times or groups were noted. Conclusion: Within the scope of this study, PEEK reinforcement for maxillary palateless implant overdentures is recommended more than metal cobalt chromium reinforcements as it showed favourable clinic and radiographical responses after one year of overdenture insertion.

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“…For PEEK reinforced group, frames were milled in modified PEEK discs (BioHPP, Bredent, Germany) (fig 2b). The thickness of both metal and PEEK frames was standardized at 1.5mm 30 . Each patient received one metal reinforced overdenture and one PEEK reinforced overdenture in 2 occasions separated by 3 months time interval to enhance neuromuscular adaptation.…”

Section: Surgical and Prosthetic Interventionsmentioning

confidence: 99%

“…Other materials can be used to decrease deformation and avoid bad appearance and reduced adhesion of metal to acrylic resin of the dentures 29 such as carbon fibrils, fiber glasses, or rigid polyethylene fiber. However, these materials are time consuming and less accurate than CAD/CAM technologies 30 . Recently, Polyetherether-ketone (PEEK) is used as a metallic frame for fixed and removable prosthesis.…”

Section: Introductionmentioning

confidence: 99%

Effect of type of reinforcement on clinical denture base deformation with telescopic attachments of implant retained overdentures. A within-subject clinical study.

talawy

Hassan

2021

Egyptian Dental Journal

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Aim:The aim of this within-subject study was to evaluate and compare clinical denture base deformation with two types of denture base reinforcement for telescopic implant retained overdentures.Materials and methods: Six completely edentulous participants received two implants in the canine region of the mandible and the implants were connected to the overdentures with resilient telescopic attachments. Each patient received 2 types of denture reinforcement for the mandibular overdentures; 1) metal reinforced overdentures, 2) PEEK reinforced overdentures. Four straingauges were adhered to the lingual polished surface of each denture abutment top (C1 and C3), and 5 mm below abutment top (C2 and C4). Strain registrations were performed during maximum voluntary clenching. Results:The measured strains and implant positions C1 and C3 were tensile in nature and the measured strains at implant positions C2 and C4 were compressive in nature. The highest microstrain was noted at C3, followed by C1, then C2, and the lowest strain was noted was with C4 for both groups. There was no significant difference in recorded microstrains between C1 and C3 or between C2 and C4. For all strain gauge positions, PEEK reinforced overdentures recorded significantly higher microstrains than metal-reinforced overdentures. Conclusion:Within the limitation of this short term cross over trial, cobalt-chromium metal reinforcement for mandibular implant assisted overdentures is recommended than PEEK reinforcement as it reduced denture base strains and deformation during maximum voluntary clenching.

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Reduction in maxillary complete denture deformation using framework material made by computer-aided design and manufacturing systems

Cited by 20 publications

References 32 publications

The use of PEEK in digital prosthodontics: A narrative review

The use of PEEK in digital prosthodontics: A narrative review

Metal versus Poly ether-ether ketone (PEEK) framework reinforcements for maxillary palateless ball retained implant overdentures. One year clinical and radiographic outcomes

Effect of type of reinforcement on clinical denture base deformation with telescopic attachments of implant retained overdentures. A within-subject clinical study.

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