Loading capacity of zirconia implant supported hybrid ceramic crowns

Rohr, Nadja; Coldea, Andrea; Zitzmann, Nicola U.; Fischer, Jens

doi:10.1016/j.dental.2015.09.012

Cited by 36 publications

(46 citation statements)

References 30 publications

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“…The test set-up has been previously described 14) . Fifty molar crowns (tooth 46) of each material (Table 1) were manufactured using CAD/CAM processing (Omnicam and inLab MCXL, Sirona, Bensheim, Germany).…”

Section: Crown Manufacturing and Cementationmentioning

confidence: 99%

“…To predict clinical behavior of restorations, fracture load tests on crowns are performed although their significance is controversially discussed [9][10][11][12][13][14][15] . Due to differences in test set up, fracture load of restorative materials can vary significantly [10][11][12][13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

“…Due to differences in test set up, fracture load of restorative materials can vary significantly [10][11][12][13][14][15] . Parameters such as crown design, core material, preparation form, loading angle as well as cementation procedures influence fracture load values.…”

Section: Introductionmentioning

confidence: 99%

“…Cementation with adhesive or self-adhesive composite resin cement increases fracture load values of crown materials with low internal strength 14) . A high compressive strength of the cement results in a homogeneous stress distribution and elevates the stability of the restorative system 14) .…”

Section: Introductionmentioning

confidence: 99%

“…A high compressive strength of the cement results in a homogeneous stress distribution and elevates the stability of the restorative system 14) . The cement fills the gap between crown and implant, thus preventing from preliminary contacts that might cause stress peaks followed by early crack growth.…”

Section: Introductionmentioning

confidence: 99%

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Correlations between fracture load of zirconia implant supported single crowns and mechanical properties of restorative material and cement

Rohr

Märtin

Fischer

2018

Dental Materials Journal

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Zirconia implants that were restored with veneered zirconia displayed severe chipping rates of the restorations in clinical studies. Purpose of this study was to evaluate the fracture load of different zirconia implant supported monolithic crown materials (zirconia, alumina, lithium disilicate, feldspar ceramic and polymer-infiltrated ceramic) cemented with various cements (Harvard LuteCem SE, Harvard Implant Semi-permanent, Multilink Automix, VITA Adiva F-Cem). Flexural strength and fracture toughness of crown materials and compressive strength of the cements were measured. Fracture load values of crowns fabricated from lithium disilicate, feldspar ceramic and polymer-infiltrated ceramic were increased when cement with high compressive strength was used. Fracture loads for zirconia and alumina crowns were not influenced by the cement. Flexural strength and fracture toughness of the ceramics correlated linearly with the respective fracture load when using adhesive cement with high compressive strength. To achieve sufficient fracture load values, cementation with adhesive cement is essential for feldspar and polymer-infiltrated ceramic.

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Section: Crown Manufacturing and Cementationmentioning

confidence: 99%