Retentive force of PEEK secondary crowns on zirconia primary crowns over time

Schubert, Oliver; Reitmaier, Josef; Schweiger, Josef; Erdelt, Kurt; Güth, Jan‐Frederik

doi:10.1007/s00784-018-2657-x

Cited by 27 publications

(29 citation statements)

References 34 publications

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“…Several in vitro studies tested retention forces of double crown systems with primary zirconia crowns and secondary PEEK crowns. An in vitro study found that secondary PEEK crowns provide stable retentive forces after 10 years of simulated aging and comparable values at baseline with well-established electroformed crowns [44]. Another advantage of digitally fabricated telescopic crowns is that in case of loss of retention or other technical complication any part of the double crown system can be reproduced using the stored data.…”

Section: Double-crown-retained Removable Dental Prosthesesmentioning

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: Double-crown-retained Removable Dental Prosthesesmentioning

confidence: 99%

The use of PEEK in digital prosthodontics: A narrative review

et al. 2020

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“…PEEK is increasingly used in the manufacture of removable and fixed prostheses [ 96 ], such as dental crowns, bridges and denture clamps in removable dental prostheses [ 38 , 97 , 98 , 99 , 100 ]. This is due to its advantages, including low potential to deduce an allergy, low water solubility, superior biocompatibility, high thermal and chemical resistance, moderate biofilm formation and excellent mechanical properties [ 97 , 98 ].…”

Section: Effects Of Peek For Prosthodontics Applicationsmentioning

confidence: 99%

“…Double crown systems, including telescopic crowns with a 0° taper and conus crowns, are capable of providing retention for RPD due to their guidance, support and protection from dislodging movements [ 98 ]. In the double crown system, CAD/CAM manufactured PEEK secondary crowns exhibited sufficient and stable retentive force values even after artificial aging, which were equivalent to 10 years of clinical usage [ 97 ]. Another study by Merk et al [ 99 ] similarly claimed that PEEK might be suitable for telescopic crown technique when being used on zirconia crowns.…”

Section: Effects Of Peek For Prosthodontics Applicationsmentioning

confidence: 99%

Review on Development and Dental Applications of Polyetheretherketone-Based Biomaterials and Restorations

et al. 2021

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Polyetheretherketone (PEEK) is an important high-performance thermoplastic. Its excellent strength, stiffness, toughness, fatigue resistance, biocompatibility, chemical stability and radiolucency have made PEEK attractive in dental and orthopedic applications. However, PEEK has an inherently hydrophobic and chemically inert surface, which has restricted its widespread use in clinical applications, especially in bonding with dental resin composites. Cutting edge research on novel methods to improve PEEK applications in dentistry, including oral implant, prosthodontics and orthodontics, is reviewed in this article. In addition, this article also discusses innovative surface modifications of PEEK, which are a focus area of active investigations. Furthermore, this article also discusses the necessary future studies and clinical trials for the use of PEEK in the human oral environment to investigate its feasibility and long-term performance.

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“…The possible explanation may be that known recommendation not to polish inner surfaces of PEEK crowns contributes to an initial high abrasiveness and consequently robust initial retentive force values. In addition to that, PEEK as a flexible material undergoes the process of better adaptation to the primary coping [9,10,11]. The results concerning the second hypothesis showed that final pull-off forces were 4.1 N and 3 N, respectively for each group.…”

Section: Discussionmentioning

confidence: 92%

“…The results concerning the second hypothesis showed that final pull-off forces were 4.1 N and 3 N, respectively for each group. Phenomenon that occurs during the settling-in phase represents plastic deformation of materials with an increase of actual contact surface area resulting in tension reduction between surfaces [3,11]. The existing tension will decrease as long as the limits of elasticity are exceeded anywhere in the contact area, whereas elasticity is specific for any given material.…”

Section: Discussionmentioning

confidence: 99%

Retention force of overdenture retained with telescopic crowns: A comparison of polyether ether ketone and zirconia ceramic telescopic crowns

et al. 2020

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Introduction/Objective. Recently, new materials for double crowns have been introduced, such as zirconia and polyether ether ketone (PEEK). However, some characteristics of these materials, such as retentive force and duration of ?settling in phase,? have not been investigated sufficiently. During the ?settling in phase,? telescopic overdenture has not yet achieved its definitive retention force, and it can be harmful for periodontal tissue if the value is above optimal for a long period of time. The objective was to measure the in vitro overall pull-off force of telescopic crowns where primary crowns were made from zirconia ceramics and a survey of the ?settling in phase? duration. Methods. Forty zirconia primary telescopic crowns were produced on prepared canine teeth. Twenty secondary crowns were of PEEK and other 20 of zirconia with electroplated gold copings. The pull-off force measurements were conducted utilizing a dynamometer until a constant value was obtained. Results. The specimens of the PEEK group showed higher initial retentive force values. Settling in phase was finished between 800 and 900 cycles of separation for both groups. Comparing the value of the pull-off force between individual different cycles, a statistically significant reduction was recorded up to the 800th cycle, while between the 800th and the 900th cycle there was no difference. Conclusions. The settling in phase was finished between 800 and 900 cycles of separation in both groups. Final retentive force values for both tested telescopic groups were in the optimal range which is 5?9 N per one telescopic crown.

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Retentive force of PEEK secondary crowns on zirconia primary crowns over time

Cited by 27 publications

References 34 publications

The use of PEEK in digital prosthodontics: A narrative review

The use of PEEK in digital prosthodontics: A narrative review

Review on Development and Dental Applications of Polyetheretherketone-Based Biomaterials and Restorations

Retention force of overdenture retained with telescopic crowns: A comparison of polyether ether ketone and zirconia ceramic telescopic crowns

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