Fatigue resistance of all-ceramic fixed partial dentures – Fatigue tests and finite element analysis

Heintze, Siegward D.; Monreal, Dominik; Reinhardt, M.; Eser, Atılım; Peschke, Arnd; Reinshagen, J.; Rousson, Valentin

doi:10.1016/j.dental.2017.12.005

Cited by 34 publications

(37 citation statements)

References 44 publications

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“…Nevertheless, long lasting adhesion of resin cement to zirconia surface internally coated by fusing silicabased ceramic is not clear and requires further studies. In addition, forces are not always applied perpendicular to the axis of a restoration as in the current in vitro study and it is more clinically relevant to test the FPDs under fatigue load [17,32,33]. As a result, translation of the results of this in vitro study to the reality of the oral cavity is limited.…”

Section: Discussionmentioning

confidence: 98%

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Effect of ceramic material type on the fracture load of inlay-retained and full-coverage fixed dental prostheses

Kermanshah

Motevasselian

Kakhaki

et al. 2020

Biomaterial Investigations in Dentistry

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Objective: Ceramic inlay-retained fixed partial denture (IRFPD) is a conservative prosthetic option but the mechanical durability of new high strength zirconia reinforced glass ceramic FPDs is not investigated. The purpose of this study was to compare fracture load of 3-unit ceramic FPDs. Materials and methods: Extracted premolars and molars (N ¼ 64) were used to create three test groups (IRFPDs) and one control group (full coverage FPD) (n ¼ 8). The teeth were embedded in PMMA resin with a mesiodistal distance of 6 mm. Premolars had a distal and molars had a mesial inlay preparation (width: 3 mm; height: 4 mm) in the test groups. IRFPDs were made from a zirconia reinforced lithium silicate (VS) or a monolithic zirconia. Zirconia IRFPDs received 2 types of surface treatments: sandblasting (Zr-IRFPD) or internal coating with feldspathic porcelain (ZrC-IRFPD). Control group was made from monolithic zirconia with the same connector size and zirconia surfaces were sandblasted (Zr-FPD). All restorations were cemented using a resin luting cement. After 5000 thermo-cycles, fracture load values (N) were determined with a universal testing machine at a crosshead speed of 0.75 mm/min. Data were analyzed using 1-way ANOVA and Tukeys post hoc test (p ˂ .05). Result: Fracture load (mean ± SD) of Zr-FPDs, Zr-IRFPDs and ZrC-IRFPDs were 672 ± 183, 672 ± 123 and 638 ± 59, respectively, being not statistically different (p > .05). VS-IRFPD exhibited statically lower values (391 ± 136). The predominant mode of failure was fracture at the connector area in all groups. Conclusion: The fracture load of 3-unit IRFPD was significantly affected by types of ceramics but the retainer design and surface treatment in Zr groups did not show a significant effect.

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Section: Discussionmentioning

confidence: 98%

“…Lithium-disilicate glass-ceramic is another high strength material with impressive esthetic quality [5]. However, its limited mechanical properties may not be promising for posterior FPDs [17]. New microstructure in glass-ceramics has been recently developed with the optimized behavior in mechanical properties and optical features [5].…”

Section: Introductionmentioning

confidence: 99%

Effect of ceramic material type on the fracture load of inlay-retained and full-coverage fixed dental prostheses

Kermanshah

Motevasselian

Kakhaki

et al. 2020

Biomaterial Investigations in Dentistry

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“…Heintze et al 29 argued that in case of testing crown specimens, the application of artificial periodontium would decrease the axial force as the abutment moves in an unstandardizable elastic layer, which will more likely results in an uncontrolled and unstandardized mobility. 29 In another study, Heintze et al 35 justified not using artificial periodontium in case of FPDs specimens by the variation in the thickness of the silicone layer (300 and 700 μm) that they found from their own experience. This variation makes it unstandardized and the subsequent mobility of the abutment teeth during loading would be uncontrolled and unstandardized.…”

Section: Discussionmentioning

confidence: 99%

“…This variation makes it unstandardized and the subsequent mobility of the abutment teeth during loading would be uncontrolled and unstandardized. 35 In a systematic review of the experimental variables involved in fatigue testing of restorative materials, it has been advised that simulation of all intraoral conditions including PDL should be as close as possible 14 because the influence of each factor on the results has not been confirmed sufficiently in the literature. However, up to date, the simulation of PDL in vitro lacks standardization in terms of materials, techniques, and dimensions.…”

Section: Discussionmentioning

confidence: 99%

In vitro Simulation of Periodontal Ligament in Fatigue Testing of Dental Crowns

et al. 2020

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Abstract Objective Fatigue testing of restorative material has been appreciated as an appropriate method to evaluate dental restorations. This study aims to investigate the influence of periodontal ligament (PDL) simulation on fatigue and fracture tests results of zirconia crowns. Materials and Methods A standard tooth preparation for all ceramic zirconia crown was made on a typodont mandibular molar. The prepared master die was duplicated using epoxy resin to produce 40 replicas. PDL simulation was made by surrounding the root of 20 dies with a 0.3-mm thick silicon layer. The other 20 specimens had no PDL simulation. Zirconia crowns were fabricated using computer-aided design/computer-aided manufacturing technology and cemented to the epoxy resin dies. Ten crowns from each group were subject to chewing simulation with simultaneous thermocycling (5–55°C). All specimens were then loaded until failure in universal testing machine. Statistical Analysis Statistical analysis was conducted using SPSS software. Shapiro–Wilk test confirmed the normal distribution of data. Descriptive statistic was performed and differences between the groups were analyzed using paired samples t-test. Results All fatigued crowns survived chewing simulation; no failure was observed after finishing simulation. The highest mean fracture load recorded was 3,987 ± 400 N for the no fatigue/no periodontal simulation group. Comparing the mean fracture load of the two groups with periodontal simulation and the two groups with no periodontal simulation showed no statistically significant difference (p > 0.5). Conclusion Considering the testing set-up applied in this study, simulating PDL using resilient materials does not affect the in vitro survival and fracture resistance of zirconia crowns.

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“…The filling material was applied by means of horizontally layered technique, in layers up to 2 mm thickness [17]. Each layer was polymerised in continuous mode for 20 s, for enamel shades, and 40 sec., for dentin shades, employing the halogen lamp Translux Energy (Heraeus Kulzer,) which has a light intensity of 900 mW/cm².…”

Section: Description Of Nano Composite Materialsmentioning

confidence: 99%

Nano Filler Composite Restorations Marginal Adaptation. Direct and indirect assessment

Rațiu¹,

Almasi²,

Porumb³

et al. 2017

Mat.Plast.

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Marginal adaptation at composite enamel interface was assessed through direct clinical method, three-dimensional scanning and optical microscopy respectively for three composite materials with Nano filler: Tetric EvoCeram� (Ivoclar Vivadent-), Premise (Kerr Corp.) and experimental material C20 (�Raluca Ripan� Chemistry Research Institute, Cluj-Napoca). Clinical evaluation of marginal adaptation highlights at 6 months and at 12 months a rate of 25-40% marginal defects, regardless the Nano composite material used. Characterisation of interface between Nano-composite material and dental tissue requires a complex multifactorial assessment.

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Fatigue resistance of all-ceramic fixed partial dentures – Fatigue tests and finite element analysis

Cited by 34 publications

References 44 publications

Effect of ceramic material type on the fracture load of inlay-retained and full-coverage fixed dental prostheses

Effect of ceramic material type on the fracture load of inlay-retained and full-coverage fixed dental prostheses

In vitro Simulation of Periodontal Ligament in Fatigue Testing of Dental Crowns

Nano Filler Composite Restorations Marginal Adaptation. Direct and indirect assessment

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