Fracture strength after dynamic loading of endodontically treated teeth restored with different post-and-core systems

Heydecke, Guido; Butz, Frank; Hussein, Amr; Strub, Jörg Rudolf

doi:10.1067/mpr.2002.123849

Cited by 174 publications

(186 citation statements)

References 24 publications

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“…Therefore, the first null hypothesis that core material would not affect the fracture strength of endodontically-treated teeth was rejected. In accordance with the present study, a previous study by Heydecke et al 9 demonstrated higher fracture strength values of zirconia post with ceramic cores compared with titanium post restored with composite core and cast post-cores.…”

Section: Discussionsupporting

confidence: 82%

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Fracture resistance of endodontically treated roots restored with zirconia post and different core materials

Ergün¹,

Kaya²,

Eğilmez³

et al. 2014

Cumhuriyet Dent J

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Objectives:The aim of this study was to investigate the effect of different core materials on the fracture strength of endodontically treated roots. Materials and Methods: Twenty-one (CAD/CAM zirconia post) posts were cemented to the central incisors with a resin cement (Rely X Unicem). After fabrication of core restorations (zirconia, resin core, resin composite), the metal crowns were fabricated on these cores and cemented with a polycarboxylate cement. Each specimen was embedded in an acrylic resin mold. A compressive load was applied on the lingual surface (2 mm below the incisal edge) at 45º angle and crosshead speed of 0.5 mm/min until a fracture occurred. Then fracture strength was measured using a universal testing machine. Data were analyzed using one-way analysis of variance and Tukey tests (p<0.05). Results: The core materials used had significant effect on fracture strength of tooth restored with zirconia post (p<0.05). The mean fracture strength values of the specimens restored with different core materials were ranked as follows: Zirconia core (480 ± 132 MPa) > resin composite (344 ± 60 MPa) ≥ resin core (332 ± 89 MPa). Conclusions: Zirconia post-core system showed higher fracture strength values than resin composite and resin core groups. However, the fracture patterns observed in teeth restored with resin-based materials were more favorable than teeth restored with zirconia posts.

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Section: Discussionsupporting

confidence: 82%

“…6,8 In addition, as an alternative to resin composite cores bonded to zirconia posts, high-strength ceramics are used with copy-milling systems for the fabrication of cores. 9,10 …”

Section: Introductionmentioning

confidence: 99%

Fracture resistance of endodontically treated roots restored with zirconia post and different core materials

Ergün¹,

Kaya²,

Eğilmez³

et al. 2014

Cumhuriyet Dent J

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“…Numerosos estudios defienden el uso de postes para la retención de muñones protésicos, pero no apoyan el uso de postes para fortalecer las piezas dentarias (26,27,35).…”

Section: Discussionunclassified

“…En estudios clíni-cos se observaron el comportamiento de dientes restaurados con postes de fibra encontrando un índice de fracasos de 2-3,2%, siendo válida esta técnica como alternativa de uso clínico (24,28). Otros autores concluyen que los dientes despulpados restaurados con materiales adhesivos no requieren la inserción adicional de postes (25,26).…”

Section: Introductionunclassified

Resistencia a la fractura frente a carga estática transversal en piezas dentarias restauradas con espigo-muñón colado, postes de fibra de carbono y de aleación de titanio

Solar

Camacho

Morales

2014

Rev Estomatol Herediana.

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El propósito del presente estudio fue determinar la resistencia a la fractura frente a cargaestática transversal de piezas dentarias tratadas endodonticamente, restauradas con espigomuñóncolado, postes de fibra de carbono(C-Post®, ©Bisco Inc) y postes de aleación de titanio(Parapost®, ©Coltène/Whaledent Inc.). Se utilizó el adhesivo All Bond 2® (©Bisco, Inc) comomaterial adhesivo y el cemento de resina Duolink® (©Bisco Inc) para cementar los postes. Laprueba de anova unifactorial encontró que las piezas dentarias restauradas con espigo-muñóncolado tuvieron una mayor resistencia frente a carga estática transversal que las piezas dentariasrestauradas con postes de fibra de carbono(C-Post®, ©Bisco Inc) y postes de aleación de titanio(Parapost ®, ©Coltène/Whaledent Inc).

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“…The structural integrity and clinical longevity of post-and-core restored teeth are therefore strongly dependent on the state of stress created in their different regions due to occlusal loads. In addition to the magnitude and direction of such loads, the stress state at a given point within a restored tooth is also infl uenced by factors like the design and material of the post and the quantity and quality of the remaining root tissue [20][21][22][23][24][25][26] . According to some authors 22 , as the extensive loss of root dentin increases the risk of radicular fracture, appropriate mechanical behavior of the post is considered, in this case, to be fundamental to the success of rehabilitating restored teeth.…”

Section: Introductionmentioning

confidence: 99%

Stress prediction in a central incisor with intra-radicular restorations

et al. 2011

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A 2D fi nite element analysis was applied to calculate shear and von Mises equivalent stresses developed, under masticatory loading, in an upper central incisor restored with cast gold post and carbon fi ber reinforced epoxy resin post. Based on the predicted shear stress levels, it is concluded that the gold post model is more prone to shear failure along the post-dentin interface. Whereas shear stress concentration also occurs in both models at the core-crown interface, the stress level predicted there is higher for the carbon fi ber post model which would be more susceptible to crown displacement. Finally, the prediction of von Mises equivalent stress indicates a nonuniform distribution, with the stress preferentially concentrated in the gold post along its interface with the tooth dentin. For the carbon fi ber post restored model, on the other hand, the von Mises stresses are more uniformly distributed achieving its maximum level in the tooth dentin.

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Fracture strength after dynamic loading of endodontically treated teeth restored with different post-and-core systems

Cited by 174 publications

References 24 publications

Fracture resistance of endodontically treated roots restored with zirconia post and different core materials

Fracture resistance of endodontically treated roots restored with zirconia post and different core materials

Resistencia a la fractura frente a carga estática transversal en piezas dentarias restauradas con espigo-muñón colado, postes de fibra de carbono y de aleación de titanio

Stress prediction in a central incisor with intra-radicular restorations

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