Mechanical stability of all-ceramic abutments retained with three different screw materials in two-piece zirconia implants—an in vitro study

Stimmelmayr, Michael; Lang, Anna; Beuer, Florian; Mansour, Sonia; Erdelt, Kurt; Krennmair, Gerald; Güth, Jan‐Frederik

doi:10.1007/s00784-019-03043-3

Cited by 6 publications

(14 citation statements)

References 24 publications

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“…Significance (linear mixed models, level of significance p < 0.05) calculated for differences regarding the implant design, different covariables and treatments can be found in Table 4. [16,19,21,24,26,30]. The remaining investigations evaluated a mixture of both 1-and 2-piece implants [13,27,28].…”

Section: Discussionmentioning

confidence: 99%

“…All 17 articles published between 2009 [29] and 2019 [15,16] were included and analyzed in the present meta-analysis. Moreover, unpublished data of two projects currently under review and in preparation of the manuscript were included (Table 1).…”

Section: Meta-analysesmentioning

confidence: 99%

“…Of the two-piece implants included in the present review (n = 236), 159 abutments were assembled by screw retention [13,16,19,21,24,26]. Most screws were made from titanium, but also gold and polyetheretherketone (PEEK; in one study, carbon-fiber-reinforced [26]) were used.…”

Section: Abutment Preparation and Implant-abutment-connection (Iac)mentioning

confidence: 99%

“…High temperature treatment was applied in combination or during dynamic loading or alone. The remaining 310 implants were subjected to a thermal cycling (TC) procedure, exposing the samples to a changing water bath set at 5 and 55 • C [12,16,[18][19][20]22,[27][28][29][30]. The latter was mostly performed during dynamic loading in a chewing simulation device.…”

Section: Thermal Agingmentioning

confidence: 99%

“…To overcome this, different treatments were proposed to mimic intraoral conditions to the extent possible for the evaluation of ceramic implants. These treatments included thermal aging (high-temperature conditions or thermal cycling) [15,16] and/or dynamic loading procedures (various exposure times and different applied loading modes) [12,17]. Zirconia implants evaluated regarding their fracture resistance in the literature comprised a heterogeneous range of features like material selection (yttria-stabilized tetragonal zirconia polycrystal, Y-TZP or alumina-toughened zirconia, ATZ) [18], design (1-or 2-piece) [13], manufacturing (subtractive or by ceramic injection molding, CIM) [19], restoration (anatomical crown, hemisphere or no restoration) [20,21], abutment preparation (in the case of 1-piece implants) [22], or assembly (in the case of 2-piece implants) [13].…”

Section: Introductionmentioning

confidence: 99%

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Fracture Resistance of Zirconia Oral Implants In Vitro: A Systematic Review and Meta-Analysis

et al. 2020

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Various protocols are available to preclinically assess the fracture resistance of zirconia oral implants. The objective of the present review was to determine the impact of different treatments (dynamic loading, hydrothermal aging) and implant features (e.g., material, design or manufacturing) on the fracture resistance of zirconia implants. An electronic screening of two databases (MEDLINE/Pubmed, Embase) was performed. Investigations including > 5 screw-shaped implants providing information to calculate the bending moment at the time point of static loading to fracture were considered. Data was extracted and meta-analyses were conducted using multilevel mixed-effects generalized linear models (GLMs). The Šidák method was used to correct for multiple testing. The initial search resulted in 1864 articles, and finally 19 investigations loading 731 zirconia implants to fracture were analyzed. In general, fracture resistance was affected by the implant design (1-piece > 2-piece, p = 0.004), material (alumina-toughened zirconia/ATZ > yttria-stabilized tetragonal zirconia polycrystal/Y-TZP, p = 0.002) and abutment preparation (untouched > modified/grinded, p < 0.001). In case of 2-piece implants, the amount of dynamic loading cycles prior to static loading (p < 0.001) or anatomical crown supply (p < 0.001) negatively affected the outcome. No impact was found for hydrothermal aging. Heterogeneous findings of the present review highlight the importance of thoroughly and individually evaluating the fracture resistance of every zirconia implant system prior to market release.

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Section: Discussionmentioning

confidence: 99%

Section: Meta-analysesmentioning

confidence: 99%

Section: Abutment Preparation and Implant-abutment-connection (Iac)mentioning

confidence: 99%

Section: Thermal Agingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fracture Resistance of Zirconia Oral Implants In Vitro: A Systematic Review and Meta-Analysis

et al. 2020

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Clinical Longevity of Zirconia Implants with the Focus on Biomechanical and Biological Outcome

Kohal

Dennison

2020

Curr Oral Health Rep

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Purpose of Review The goal of the present review is to update the reader on the scientific background of zirconia ceramic implants. Clinical investigations using zirconia ceramic implants over the last couple of years have brought up some new developments and questions. Can we be confident in placing zirconia ceramic implants given the recently published data? Is there a difference in the application of one- and two-piece implants? Recent Findings Systematic reviews on preclinical investigations of zirconia implants revealed that one-piece zirconia implants (> 4 mm) are sufficiently stable for clinical use. The same is true for some clinically available two-piece implant systems. Osseointegration and soft tissue integration are, according to the reviews, similar between titanium and zirconia implants with similar surface topographies. Regarding the clinical outcome, a meta-review exists evaluating systematic reviews. The findings of the systematic reviews and the meta-review are that there are good short-term clinical results for one-piece zirconia implants. However, the data for two-piece implants is not robust. Summary In certain applications (single tooth restorations and small bridges), the results of zirconia implants are comparable with titanium implants in short-term studies. Some mid-term investigations support the short-term results. However, according to the current scientific data available, zirconia implants cannot yet be considered an alternative to titanium implants because there are many areas where there is a lack of clinical studies on zirconia implants. Currently, they are an addendum to the titanium implant armamentarium for situations where they are useful (patient request, known hypersensitivity to titanium, or questions of esthetics when titanium might appear inappropriate for a certain situation/condition), but long-term studies are needed. Without a doubt, there is a need for two-piece zirconia implants, but limited research exists to support their clinical use at the moment.

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The effect of thermomechanical aging on the fracture resistance of additive and subtractive manufactured polyetheretherketone abutments

Türksayar,

Petersmann,

Spintzyk

2024

Journal of Dentistry

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Mechanical stability of all-ceramic abutments retained with three different screw materials in two-piece zirconia implants—an in vitro study

Cited by 6 publications

References 24 publications

Fracture Resistance of Zirconia Oral Implants In Vitro: A Systematic Review and Meta-Analysis

Fracture Resistance of Zirconia Oral Implants In Vitro: A Systematic Review and Meta-Analysis

Clinical Longevity of Zirconia Implants with the Focus on Biomechanical and Biological Outcome

The effect of thermomechanical aging on the fracture resistance of additive and subtractive manufactured polyetheretherketone abutments

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