Biomechanical behavior of cavity design on teeth restored using ceramic inlays: An approach based on three-dimensional finite element analysis and ultrahigh-speed camera

Cheng, Ching-Yuan; Chen, Weng-Pin; Chien, Yu-Ting; Teng, Yu-Ting; Lu, Pei-Ying; Huang, Shao-Wei; Lin, Po‐Yen; Chiang, Yu‐Chih

doi:10.1016/j.actbio.2019.03.030

Cited by 6 publications

(2 citation statements)

References 33 publications

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“…44 The anatomy of premolars and the location of the masticatory load may increase the fracture likelihood of restorations. 45 Posts have different rigidity and modulus of elasticity from dental tissues, which could be the reason for stress concentration within the tooth root structure. 30,[46][47][48][49] The FEA indicates maximum stress locations and identifies areas that could lead to failure of restorations.…”

Section: Discussionmentioning

confidence: 99%

Biomechanical Analysis of Mandibular Premolar Restored with Different Custom Post Core

Gavranović-Glamoč,

Jakupović,

Cerjaković

et al. 2024

European Journal of General Dentistry

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Objective This study investigated biomechanical behavior of custom post core made of six different materials on the tooth with and without the ferrule under different occlusal load. Materials and Methods Three-dimensional models of mandibular first premolar, with and without ferrule, reconstructed from micro-computed tomography image are restored with different custom post core and zirconia crowns. By using the finite element analysis, von Mises stress shown in MPa was measured under simulated axial and oblique load of 200 [N]. To compare the stress distribution, six different custom post core materials were chosen: zirconia, Ni-Cr alloy, gold alloy, glass fiber-polyether ether ketone, polyether ether ketone, and carbon fiber-polyether ether ketone. Results Custom post cores with a higher modulus of elasticity showed higher measured stress in the posts, but less stress in dentin. Measured stress in custom post core under oblique loading was approximately three times higher compared with axial loading. Stress in custom post core and in dentin under both types of loads was slightly higher in teeth without ferrule effect. Conclusion The use of custom cast post cores made of different alloys is recommended in restoration of endodontically treated teeth, with extensive loss of tooth structure especially in teeth without ferrule effect.

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Section: Discussionmentioning

confidence: 99%

Biomechanical Analysis of Mandibular Premolar Restored with Different Custom Post Core

Gavranović-Glamoč,

Jakupović,

Cerjaković

et al. 2024

European Journal of General Dentistry

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show abstract

“…Moreover, Tortopidis et al [50] measured a maximum biting force of 580 N in healthy people's posterior areas. Besides the tooth loading level, the restorative procedure has been identified as another parameter influencing the stress and strain levels of restored teeth [19,20,35,38,41,43,51]. All researchers reported that teeth with onlay restorations appear more resistant to fracture than those with inlay restorations.…”

Section: Discussionmentioning

confidence: 99%

Influence of Cavity Geometry on the Fracture Strength of Dental Restorations: Finite Element Study

et al. 2021

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The main purpose of this work was to analyze the stress distribution in premolars restored with indirect IPS Empress® CAD onlays or inlays. The three-dimensional geometry of a human first premolar was created using modeling software. The tooth fixation system was simulated through box geometry, comprising a cortical bone layer with 2 mm of thickness over a layer of trabecular bone with 15 mm of thickness. The tooth had the following approximated crown dimensions: 10.35 mm buccolingual length; 7.1 mm mesiodistal width; and 7.0 mm cervico-occlusal height. The mesio-occluso-distal (MOD) cavity preparations followed the suggestions available in the literature. The cement geometry was modified to include cohesive zone models (CZM) to perform the adhesive joint’s strength prediction. The loading body was created assuming contact between the food bolus and the tooth surface. Numerical solutions were obtained by performing static analysis and damage analysis using the finite element method. Von Mises stress values generated in the ceramic inlay restoration ranged from 1.39–181.47 MPa, which were on average 4.4% higher than those of the onlay ceramic restoration. The fracture strength of the onlay restoration was about 18% higher than that of the inlay restoration. The onlay design seems to contribute to higher homogenization of the adhesive resin cement strain and higher tooth structure protection.

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Fracture modeling of brittle biomaterials by the phase-field method

Fang

Zhang

et al. 2020

Engineering Fracture Mechanics

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Biomechanical behavior of cavity design on teeth restored using ceramic inlays: An approach based on three-dimensional finite element analysis and ultrahigh-speed camera

Cited by 6 publications

References 33 publications

Biomechanical Analysis of Mandibular Premolar Restored with Different Custom Post Core

Biomechanical Analysis of Mandibular Premolar Restored with Different Custom Post Core

Influence of Cavity Geometry on the Fracture Strength of Dental Restorations: Finite Element Study

Fracture modeling of brittle biomaterials by the phase-field method

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