apresentação - ciops - conexão.pdf

8/13/2019 Apresentao - CIOPS - Conexo.pdf

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Universidade de So Paulo

Faculdade de Odontologia

Departamento de Biomateriais e Biologia Oral

CERMICASDENTRIAS:ANLISE DE FALHAS

Prof. Dr. Paulo Francisco Cesar


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Jos Della Pasqua Netto, Jos Augusto Rodrigues, Alessandra Cassoni,Paulo F. Cesar, Karen Fukushima, Jamil Awad Shibli (Univ. Guarulhos e USP)


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Male, 33 years old, tooth 16

Tooth preparation with resin composite core (no intra-canal post)

Crown luted with Rely-X on 16/Nov/2011

Fracture occured on 18/Jan/2012, lifetime: 2 months

A new crown was made with In-Ceram Alumina and luted with zinc

phosphate cement on 13/Feb/2012


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Gonzaga, 2007


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Microestrutura: elevada frao de partculas alongadas de dissilicato de

ltio (58%v) dispersas com tendncia de alinhamento na matriz vtrea.

Gonzaga, 2007


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OBS: next 5 SEM slides are


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OBS: next 5 SEM slides are

following the crown occlusal

surface from this point


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Same region opposite


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half


h lf


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half


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Jos Della Pasqua Netto, Jos Augusto Rodrigues, Alessandra Cassoni,

Paulo F. Cesar, Karen Fukushima, Jamil Awad Shibli (Univ. Guarulhos e USP)


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Lasted 1 month in the mouth

Broke right after finishingpatients1 month recall

Patient was at the bus stop and felt abutment loose

and came back to see the dentist again 30 minutes

later


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www.youtube.com/satelliteseminar


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Universidade de So Paulo

Faculdade de Odontologia

Departamento de Biomateriais e Biologia Oral

Prof. Dr. Paulo Francisco Cesar

Obrigado e, por favor, entrem em contato:

[email protected]


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Residual stress level predicted by finite element analysis

(Thermal stress analysis).

Residual stresses calculated by the hole-drilling technique.


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Practitioners can reduce chipping failures by taking

into account several risk parameters:

such as the presence of a ceramic restoration as

an antagonist, the presence of parafunctional activity and the

presence of implants as support.

The use of an occlusal nightguard can also

decrease failure rate.

2 1 Residual stress level predicted by finite element analysis (Thermal stress


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2.1. Residual stress level predicted by finite element analysis (Thermal stress

analysis).

2.1. Residual stress level predicted by finite element analysis (Thermal stress


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Meira et al. Dent Mater, 2013, 29(5):594-601

p y y (

analysis).

Minimumprincipal stress


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(3)

Meiraetal.DentM

ater,2013,

29(5):594-601

Maximum principal stress (1)


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Meira et al. Dent Mater, 2013, 29(5):594-601


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Belli R, Dent Mater. 2013; 29(2):181-90


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Belli et al., J Mech Behav Biomed Mater. 2013; 21:167-77

2.2. Residual stresses calculated by the


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hole-drilling technique

- Title: Residual stress in veneering ceramic on Y-

TZP, alumina and ZTA frameworks.

- Au thors: K. Fukushima, M. Sadoun, P. Cesar, A. Mainjot.

COFECUB project

Comit Franais d'Evaluation de la Coopration

Universitaire et Scientifique avec le Brsil

- Akn ow ledgements: Grace de Souza, H. Yoshimura, H.

Goldenstein, Jean-Pierre Attal.

2.2. Residual stresses calculated by the hole-drilling technique


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Hole-drilling technique


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g q

Mainjot et al. Dent Mater. 2011; 27(5):439-44

Hole-drilling technique


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COFECUB Project: Univ. Paris-Descartes (Paris 5)


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COFECUB Project: Univ. Paris Descartes (Paris 5)


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Fukushima et al., 2013 - COFECUB

Y-TZP Alumina


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ZTA Fukushima et al., 2013 - COFECUB


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Fukushima et al., 2013 - COFECUB


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apresentação - ciops - conexão.pdf

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