Comparison of fracture strength and failure mode of different ceramic implant abutments

Elsayed, Adham; Wille, Sebastian; Al-Akhali, Majed; Kern, Matthias

doi:10.1016/j.prosdent.2016.06.018

Cited by 54 publications

(117 citation statements)

References 43 publications

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“…Regarding all usage possibilities, implant biomechanics can be altered as a function of how the crown is made upon it 3 , which generates doubt in clinicians about which is the best prosthetic solution. In spite of this, all implant supported prostheses tend to mimic natural teeth in the best possible way 3,4 . However, the aesthetics of a restoration may be impaired depending on the implemented technique during its manufacture 4 .…”

Section: Introductionmentioning

confidence: 99%

“…In spite of this, all implant supported prostheses tend to mimic natural teeth in the best possible way 3,4 . However, the aesthetics of a restoration may be impaired depending on the implemented technique during its manufacture 4 . Among prosthetic solutions available for implants, the use of two ceramic blocks for CAD/CAM allows for preparing potentially more aesthetic crowns, due to the decrease of metal thickness in the abutment for placing the ceramic mesostructure 4 .…”

Section: Introductionmentioning

confidence: 99%

“…However, the aesthetics of a restoration may be impaired depending on the implemented technique during its manufacture 4 . Among prosthetic solutions available for implants, the use of two ceramic blocks for CAD/CAM allows for preparing potentially more aesthetic crowns, due to the decrease of metal thickness in the abutment for placing the ceramic mesostructure 4 . According to the authors, this method of manufacturing crowns on titanium bases enables many combinations between the crown's and mesostructure's ceramics, as the first cemented block has a perforation that allows passage for the abutment fixing screw.…”

Section: Introductionmentioning

confidence: 99%

“…The proposal of using an hybrid abutment is very interesting so that unitary crowns with a great ceramic volume would have similar aesthetic characteristics to the adjunctive teeth, which is not always possible with conventional abutments 5,6 . Hybrid abutment are suggested to present mechanical properties similar to titanium abutments 4,7,8 and promising durability and strength after long-term 9 .…”

Section: Introductionmentioning

confidence: 99%

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Influence of crown and hybrid abutment ceramic materials on the stress distribution of implant-supported prosthesis

Tribst

Bottıno

2018

Rev. odontol. UNESP

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ResumoIntrodução: Um novo design de pilar para implantes dentários está disponível com a possibilidade de melhorar a estética sem comprometer a resistência mecânica, usando blocos cerâmicos perfurados para CAD/CAM. Objetivo: Este estudo avaliou a influência da combinação de diferentes materiais cerâmicos para coroa e para pilar híbrido na distribuição de tensões de prótese sobre implante hexágono externo. Método: Zircônia, dissilicato de lítio e cerâmica híbrida foram avaliados, totalizando 9 combinações de materiais para coroa e mesoestrutura. Para análise de elementos finitos, uma coroa monolítica cimentada sobre um pilar híbrido (mesoestrutura + base de titânio) foi modelada sobre um implante de hexágono externo. Os modelos foram exportados em formato STEP para o software de análise, e os materiais foram considerados isotrópicos, lineares, elásticos e homogêneos. Uma carga oblíqua (30°, 300N) foi aplicada no fundo da fossa central e a fixação do sistema ocorreu na base do osso. Resultado: Para a estrutura da coroa, os materiais flexíveis concentram menos tensão que os rígidos. Ao analisar o pilar híbrido, maiores valores de tensão foram observados quando feito com zircônia combinada com uma coroa de cerâmica híbrida. Em todas as combinações simuladas, a distribuição de tensões foi semelhante para o parafuso de fixação e o implante. Conclusão: Associar um material cerâmico com elevado módulo elástico para a coroa com um material de menor módulo elástico para o pilar híbrido resulta em menor concentração de tensão máxima principal, sugerindo um comportamento mecânico promissor para o sistema hexágono externo.Descritores: Cerâmica; análise de elementos finitos; implantes dentários; desenho do pilar-implante; materiais dentários. AbstractIntroduction: A new dental implant-abutment design is available with the possibility of improving aesthetic with no compromise of mechanical strength, using perforated CAD/CAM ceramic blocks. Objective: This study evaluated the influence of crown and hybrid abutment ceramic materials combination on the stress distribution of external hexagon implant supported prosthesis. Method: Zirconia, lithium disilicate and hybrid ceramic were evaluated, totaling 9 combinations of crown and mesostructure materials. For finite element analysis, a monolithic crown cemented over a hybrid abutment (mesostructure + titanium base) was modeled and screwed onto an external hexagon implant. Models were then exported in STEP format to analysis software, and the materials were considered isotropic, linear, elastic and homogeneous. An oblique load (30°, 300N) was applied to the central fossa bottom and the system's fixation occurred on the bone's base. Result: For crown structure, flexible materials concentrate less stress than rigid ones. In analyzing the hybrid abutment, it presented higher stress values when it was made with zirconia combined with a hybrid ceramic crown. The stress distribution was similar regarding all combinations for the fixation screw and implant. Conclusion: For external hexagon ...

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of crown and hybrid abutment ceramic materials on the stress distribution of implant-supported prosthesis

Tribst

Bottıno

2018

Rev. odontol. UNESP

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“…Après la mise sous contraintes des éprouvettes, des déformations plastiques interviennent sur le métal, sans fracture de la céramique. Les piliers hybrides se sont avérés plus résistants que les piliers en zircone seule (4). ❱ ❱ L'embase en titane comporte une extrémité avec un détrompeur adapté à l'orifice du bloc céramique (lui aussi doté d'un détrompeur) et l'autre extrémité adaptée à la connexion implantaire ( Fig.…”

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Les couronnes piliers hybrides transvissées sur implant : protocole rigoureux de collage des embases titane

Drogou¹

2017

Actual. Odonto-Stomatol.

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MOTS-CLEFS : Couronne pilier hybride, couronne implantaire transvissée, disilicate de lithium, pilier implantaire, CFAO KEYWORDS: Hybrid abutment crown, screw retained implant crown, lithium disilicate, implant abutment, CFAO Les couronnes piliers hybrides appelées également couronnes transvissées et les piliers hybrides unitaires sur implants sont réalisables par CFAO au cabinet dentaire. Après l'empreinte optique et la conception sur ordinateur, la prothèse est usinée dans un bloc de disilicate de lithium percé, adapté aux dimensions d'une embase en titane préfabriquée (TiBase ® ) qui assure la connexion avec l'implant. Le collage de l'embase dans la couronne et la finition de la prothèse doivent être réalisées soigneusement pour assurer sa biocompatibilité. Les contrôles cliniques et radiographiques des prothèses placées depuis les quatre ans d'utilisation du procédé attestent de sa fiabilité. Fig. 1 et 2) est obtenu industriellement à partir d'un lingotin aplani sur une face et percé en son centre aux dimensions de la base titane. Les matériaux disponibles sont : l'IPS e.max CAD® distribué par la société Ivoclar Vivadent® qui a développé le procédé, l'Enamic®, céramique hybride distribuée par la société Vita® et l'oxyde de zirconium InCoris® de Dentsply-Sirona®. Il existe également des blocs en PMMA (Polyméthacrylate de méthyle), destinés aux prothèses temporaires : le Telio CAD® d'Ivoclar Vivadent®. ❱ ❱ Les tests de résistance in vitro de piliers hybride en zircone ou en disilicate de lithium n'ont pas démontré de différence entre les deux matériaux. Après la mise sous contraintes des éprouvettes, des déformations plastiques interviennent sur le métal, sans fracture de la céramique. Les piliers hybrides se sont avérés plus résistants que les piliers en zircone seule (4). ❱ ❱ L'embase en titane comporte une extrémité avec un détrompeur adapté à l'orifice du bloc céramique (lui aussi doté d'un détrompeur) et l'autre extrémité adaptée à la connexion implantaire (Fig. 1 et 2). Même s'il existe une variété d'embase pour se connecter aux implants les plus répandus, beaucoup de plateformes implantaires n'ont pas encore d'embases en titane disponibles pour cette technique. Fabriquées à l'origine par la société SIRONA® sous l'appellation TiBase®, ces éléments adaptés aux blocs à usiner sont maintenant proposés par plusieurs fabricants. La colle recommandée et mise au point par le fabricant de céramique est fluide et opaque pour assurer un joint le plus fin possible et masquer le titane gris lorsque l'épaisseur de céramique est faible. Le Multilink Hybrid Abutment® a été développé par Ivoclar Vivadent® pour cet usage. L'étude de Weyhrauch et coll. (5) compare plusieurs produits de collage sans trouver de différences significatives et elle confirme la solidité des prothèses en céramique monolithique collées sur base titane. Tous les tests de fatigue ont abouti à la fracture des vis ou des implants, sans endommager la prothèse. Notons cependant que les TiBases® S ne sont disponibles que pour quelques référe...

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Biomaterials: Types and Applications

Bhardwaj

Pandey

2022

Nanoscale Engineering of Biomaterials: Properties and Applications

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Comparison of fracture strength and failure mode of different ceramic implant abutments

Cited by 54 publications

References 43 publications

Influence of crown and hybrid abutment ceramic materials on the stress distribution of implant-supported prosthesis

Influence of crown and hybrid abutment ceramic materials on the stress distribution of implant-supported prosthesis

Les couronnes piliers hybrides transvissées sur implant : protocole rigoureux de collage des embases titane

Biomaterials: Types and Applications

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