Stress Distribution in Bone: Single-Unit Implant Prostheses Veneered with Porcelain or a New Composite Material

Juodžbalys, Gintaras; Kubilius, Ričardas; Eidukynas, Valdas; Raustia, Aune

doi:10.1097/01.id.0000165030.59555.2c

Cited by 44 publications

(32 citation statements)

References 14 publications

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“…Some studies 25,26 reported a difference in transfer of stress around implants according to the type of implant material used. Other authors observed that stress transmitted to the bone is almost independent of the type of material used [27][28][29] , which is in agreement with the results of the present study that found a statistically significant difference (p < .05) only at one of the five points of stress assessed comparatively between the Zr and Ti implants.…”

Section: Cylinderssupporting

confidence: 83%

Analysis of Stress and Fracture Strength of Zirconia Implants after Cyclic Loading

et al. 2015

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Section: Cylinderssupporting

confidence: 83%

Analysis of Stress and Fracture Strength of Zirconia Implants after Cyclic Loading

et al. 2015

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“…All materials used in the models were considered to be isotropic, homogeneous, and linearly elastic. The elastic properties used were taken from the literature (Table 1) (11,21,22). Model stability was ensured to obtain a reliable model that was regarded as relevant with respect to engineering and clinical aspects (11).…”

Section: Methodsmentioning

confidence: 99%

Stress distribution in fixed-partial prosthesis and peri-implant bone tissue with different framework materials and vertical misfit levels: a three-dimensional finite element analysis

Bacchi¹,

Mesquita²,

Santos³

2013

J Oral Sci

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The purpose of this study was to evaluate the influence of superstructure material and vertical misfits on the stresses created in an implant-supported partial prosthesis. A three-dimensional (3-D) finite element model was prepared based on common clinical data. The posterior part of a severely resorbed jaw with two osseointegrated implants at the second premolar and second molar regions was modeled using specific modeling software (SolidWorks 2010). Finite element models were created by importing the solid model into mechanical simulation software (ANSYS Workbench 11). The models were divided into groups according to the prosthesis framework material (type IV gold alloy, silver-palladium alloy, commercially pure titanium, cobalt-chromium alloy, or zirconia) and vertical misfit level (10 µm, 50 µm, and 100 µm) created at one implant-prosthesis interface. The gap of the vertical misfit was set to be closed and the stress values were measured in the framework, porcelain veneer, retention screw, and bone tissue. Stiffer materials led to higher stress concentration in the framework and increased stress values in the retention screw, while in the same circumstances, the porcelain veneer showed lower stress values, and there was no significant difference in stress in the peri-implant bone tissue. A considerable increase in stress concentration was observed in all the structures evaluated within the misfit amplification. The framework material influenced the stress concentration in the prosthetic structures and retention screw, but not that in bone tissue. All the structures were significantly influenced by the increase in the misfit levels. (J Oral Sci 55, 239-244, 2013)

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“…[4][5][6] The stress generated by the absence of passive fit for implant supported fixed dental prostheses (FDP) does not dissipate over time due to the ankylotic nature of osseointegration, which may lead to mechanical and/or biologic complications, confirming the need for prosthetic precision to ensure longterm success. [7][8][9] Impression materials and techniques are fundamental in the precision of fit and passivity of implant supported FDPs.…”

mentioning

confidence: 99%

Accuracy of Definitive Casts Using 4 Implant-Level Impression Techniques in a Scenario of Multi-Implant System With Different Implant Angulations and Subgingival Alignment Levels

et al. 2013

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PURPOSE: To evaluate the effect of various implant-level impression techniques on the accuracy of definitive casts for a multiple internal connection implant system with different implant angulations and subgingival depths. MATERIAL AND METHODS: Six tapered Screw-Vent implants were placed in a reference model with different angles (0, 15, and 30 degrees) and subgingival positions (0, 1, and 3 mm). Twenty medium-consistency polyether impressions of this model were made with 4 techniques (n = 5 per group): (1) indirect technique, (2) unsplinted direct technique, (3) acrylic resin-splinted direct technique, and (4) metal-splinted direct technique. Impressions were poured with type IV dental stone. The interimplant distances were measured for casts using a coordinate measuring machine and the deviations compared with the reference model were calculated. Data were analyzed using intraclass correlation coefficient, ANOVA and Bonferroni test ( = 0.05). RESULTS: Four impression procedures showed significant differences (P = 0.0001). Only group 4 casts showed no significant differences in comparison with the reference model (P = 0.666) (ANOVA repeated measures). CONCLUSIONS: The impression procedure affected the accuracy of definitive casts. The metal-splinted direct technique produced the most accurate casts, followed by acrylic resin-splinted direct, indirect, and unsplinted direct techniques. ABSTRACT (199 words)Purpose To evaluate the effect of four implant-level impression techniques on the accuracy of

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Stress Distribution in Bone: Single-Unit Implant Prostheses Veneered with Porcelain or a New Composite Material

Cited by 44 publications

References 14 publications

Analysis of Stress and Fracture Strength of Zirconia Implants after Cyclic Loading

Analysis of Stress and Fracture Strength of Zirconia Implants after Cyclic Loading

Stress distribution in fixed-partial prosthesis and peri-implant bone tissue with different framework materials and vertical misfit levels: a three-dimensional finite element analysis

Accuracy of Definitive Casts Using 4 Implant-Level Impression Techniques in a Scenario of Multi-Implant System With Different Implant Angulations and Subgingival Alignment Levels

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