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EXPERIMENTAL 70%Al2O3-30%ZrO2 ZTA COMPOSITES: MECHANICAL, ESTRUCTURAL AND TOPHOGRAPHICAL CHARACTERIZATION

Grant number: 19/00452-5
Support Opportunities:Scholarships abroad - Research Internship - Doctorate
Effective date (Start): April 25, 2019
Effective date (End): December 24, 2020
Field of knowledge:Health Sciences - Dentistry - Dental Materials
Principal Investigator:Estevam Augusto Bonfante
Grantee:Ernesto Byron Benalcazar Jalkh
Supervisor: Paulo Guilherme Goncalves Gomes Coelho
Host Institution: Faculdade de Odontologia de Bauru (FOB). Universidade de São Paulo (USP). Bauru , SP, Brazil
Research place: New York University, United States  
Associated to the scholarship:18/03072-6 - Experimental 70% Al2O3-30% ZrO2 composites: structural characterization and survival probability before and after aging, BP.DR

Abstract

Yttrium tetragonal zirconia polycristal (Y-TZP) is a promising material that presents hydrothermal instability at low temperature due to metastable transformation of the tetragonal to monoclinic phase. This may lead to low temperature degradation (LTD), eventually compromising the mechanical properties and reliability of prosthetic treatments in the long-term. This project aims to innovate in the synthesis of a polycrystalline composite comprised by 70% alumina reinforced with 30% translucent (40 nanometer particle size) zirconia (ZTA - zirconia toughened alumina) and to characterize its mechanical properties in the nanoscale by nanoindentation, to assess its homogeneity throughout its bulk when compared to experimental translucent zirconia and alumina groups. The specimens will be evaluated by nanoindentation testing, before and after a simulated LTD challenge. Surface 3D properties (Sa, Sq) will be characterized by interferometry to detect potential alterations such as grain extrusion after simulated LTD. The overall aim of the project is to develop a polycrystalline composite for dentistry that meets the best properties of both alumina and zirconia resulting in a material with improved mechanical resistance compared to alumina and more resistant to LTD compared to zirconia. Nanoindentation and interferometry testing are the proposed methodology to be performed at the Department of Biomaterials and Biomimetics, New York University (NYU), since sample preparation, equipment, and trained faculty will be available for successful project completion. The BEPE phase of the project, as described in the ongoing FAPESP PhD scholarship (2018/03072-6), will be of utmost importance considering that subsequent testing to be performed in Brazil rely on the understanding of the experimental materials properties at the nanoscale, which could be accurately performed and interpreted by equipments and faculty located at NYU. In addition, the data collected in this BEPE proposal would highly enrich the grant Jovem Pesquisador (#2012-19078-7) since it would validate the methods under use for polycrystalline composite fabrication.

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Scientific publications (24)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
NAKASE, YUTARO; YAMAGUCHI, SATOSHI; JALKH, ERNESTO B. BENALCAZAR; ATRIA, PABLO J.; WITEK, LUKASZ; BONFANTE, ESTEVAM A.; LI, HEFEI; SAKAI, TAKAHIKO; OKAWA, RENA; NAKANO, KAZUHIKO; et al. In vitro analysis of durability of S-PRG filler-containing composite crowns for primary molar restoration. Dental Materials, v. 39, n. 7, p. 8-pg., . (21/06730-7, 19/00452-5, 18/03072-6)
LOPES, A. C. O.; COELHO, P. G.; WITEK, L.; BENALCAZAR JALKH, E. B.; GENOVA, L. A.; MONTEIRO, K. N.; CESAR, P. F.; LISBOA-FILHO, P. N.; BERGAMO, E. T. P.; RAMALHO, I. S.; et al. Microstructural, mechanical, and optical characterization of an experimental aging-resistant zirconia-toughened alumina (ZTA) composite. Dental Materials, v. 36, n. 12, p. E365-E374, . (16/17793-1, 17/19362-0, 18/03072-6, 12/19078-7, 19/14798-0, 19/08693-1, 19/00452-5, 16/18818-8)
TOVAR, NICK; JALKH, ERNESTO B. BENALCAZAR; RAMALHO, ILANA S.; COLON, RICARDO RODRIGUEZ; KIM, HEOIJIN; BONFANTE, ESTEVAM A.; TORRONI, ANDREA; COELHO, PAULO G.; WITEK, LUKASZ. Effects of relative centrifugation force on L-PRF: An in vivo submandibular boney defect regeneration study. JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS, v. 109, n. 12, p. 2237-2245, . (18/03072-6, 19/00452-5, 12/19078-7, 16/18818-8)
BERGAMO, EDMARA T. P.; CAMPOS, TIAGO M. B.; LOPES, ADOLFO C. O.; CARDOSO, KARINA B.; GOUVEA, MARCUS V. R.; ARAUJO-JUNIOR, EVERARDO N. S. DE; WITEK, LUKASZ; GIERTHMUEHLEN, PETRA C.; COELHO, PAULO G.; JALKH, ERNESTO B. BENALCAZAR; et al. Hydrothermal aging affects the three-dimensional fit and fatigue lifetime of zirconia abutments. JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS, v. 124, . (18/03072-6, 19/14798-0, 19/08693-1, 19/19542-4, 12/19078-7, 20/12874-9, 19/00452-5, 16/18818-8)
BENALCAZAR JALKH, E. B.; COELHO, P. G.; WITEK, L.; BERGAMO, E. T. P.; LOPES, A. C. O.; MONTEIRO, K. N.; CESAR, P. F.; GENOVA, L. A.; LISBOA-FILHO, P. N.; ABREU, J. L. B.; et al. Nanoscale physico-mechanical properties of an aging resistant ZTA composite. JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS, v. 123, . (18/03072-6, 19/08693-1, 12/19078-7, 16/18818-8, 19/00452-5, 17/19362-0, 16/17793-1)
BENALCAZAR JALKH, ERNESTO B.; TOVAR, NICK; ARBEX, LETICIA; KURGANSKY, GREGORY; TORRONI, ANDREA; GIL, LUIZ F.; WALL, BRITTANY; KOHANBASH, KIMIA; BONFANTE, ESTEVAM A.; COELHO, PAULO G.; et al. Effect of leukocyte-platelet-rich fibrin in bone healing around dental implants placed in conventional and wide osteotomy sites: A pre-clinical study. JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS, v. N/A, p. 9-pg., . (18/03072-6, 12/19078-7, 19/00452-5, 16/18818-8)
BERGAMO, EDMARA T. P.; BASTOS, TIAGO M. C.; LOPES, ADOLFO C. O.; JUNIOR, EVERARDO N. S. DE ARAUJO; COELHO, PAULO G.; JALKH, ERNESTO B. BENALCAZAR; ZAHOUI, ABBAS; BONFANTE, ESTEVAM A.. Physicochemical and mechanical characterization of a fiber-reinforced composite used as frameworks of implant-supported prostheses. Dental Materials, v. 37, n. 8, p. E443-E453, . (12/19078-7, 18/03072-6, 16/18818-8, 19/00452-5, 19/14798-0)
DE ARAUJO-JUNIOR, EVERARDO N. S.; BERGAMO, EDMARA T. P.; CAMPOS, TIAGO M. B.; JALKH, ERNESTO B. BENALCAZAR; LOPES, ADOLFO C. O.; MONTEIRO, KELLI N.; CESAR, PAULO F.; TOGNOLO, FERNANDA C.; TANAKA, RICARDO; BONFANTE, ESTEVAM A.. Hydrothermal degradation methods affect the properties and phase transformation depth of translucent zirconia. JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS, v. 112, . (19/08693-1, 19/14798-0, 12/19078-7, 19/00452-5, 16/18818-8, 18/03072-6)
TOVAR, NICK; JALKH, ERNESTO B. BENALCAZAR; RAMALHO, ILANA S.; COLON, RICARDO RODRIGUEZ; KIM, HEOIJIN; BONFANTE, ESTEVAM A.; TORRONI, ANDREA; COELHO, PAULO G.; WITEK, LUKASZ. Effects of relative centrifugation force on L-PRF: An in vivo submandibular boney defect regeneration study. JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS, . (18/03072-6, 19/00452-5, 12/19078-7, 16/18818-8)
BENALCAZAR JALKH, E. B.; BERGAMO, E. T. P.; MONTEIRO, K. N.; CESAR, P. F.; GENOVA, L. A.; LOPES, A. C. O.; LISBOA FILHO, P. N.; COELHO, P. G.; SANTOS, C. F.; BORTOLIN, F.; et al. Aging resistance of an experimental zirconia-toughened alumina composite for large span dental prostheses: Optical and mechanical characterization. JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS, v. 104, . (19/08693-1, 19/00452-5, 16/24165-7, 17/19362-0, 18/03072-6, 16/18657-4, 19/14798-0, 12/19078-7, 16/18818-8, 16/17793-1)
DE OLIVEIRA, PAULA GABRIELA FACIOLA PESSOA; BONFANTE, ESTEVAM A.; BERGAMO, EDMARA T. P.; DE SOUZA, SERGIO LUIS SCOMBATTI; RIELLA, LEONARDO; TORRONI, ANDREA; JALKH, ERNESTO B. BENALCAZAR; WITEK, LUKASZ; LOPEZ, CHRISTOPHER D.; ZAMBUZZI, WILLIAN FERNANDO; et al. Obesity/Metabolic Syndrome and Diabetes Mellitus on Peri-implantitis. TRENDS IN ENDOCRINOLOGY AND METABOLISM, v. 31, n. 8, p. 596-610, . (12/19078-7, 18/03072-6, 19/08693-1, 19/00452-5, 16/18818-8)
JALKH, ERNESTO BYRON BENALCAZAR; MONTEIRO, KELLI NUNES; CESAR, PAULO FRANCISCO; GENOVA, LUIS ANTONIO; BERGAMO, EDMARA T. P.; LOPES, ADOLFO COELHO DE OLIVEIRA; LIMA, ERICK; LISBOA-FILHO, PAULO NORONHA; CAMPOS, TIAGO MOREIRA BASTOS; WITEK, LUKASZ; et al. Aging resistant ZTA composite for dental applications: Microstructural, optical and mechanical characterization. Dental Materials, v. 36, n. 9, p. 1190-1200, . (19/08693-1, 19/00452-5, 17/19362-0, 18/03072-6, 12/19078-7, 16/17793-1, 16/18818-8)
JALKH, ERNESTO B. BENALCAZAR; BERGAMO, EDMARA T. P.; CAMPOS, TIAGO M. B.; DE ARAUJO-JUNIOR, EVERARDO N. S.; LOPES, ADOLFO C. O.; TEBCHERANI, SERGIO M.; YAMAGUCHI, SATOSHI; GENOVA, LUIS A.; GIERTHMUEHLEN, PETRA C.; WITEK, LUKASZ; et al. Stability of fatigued and aged ZTA compared to 3Y-TZP and Al2O3 ceramic systems. JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS, v. 135, p. 9-pg., . (19/08693-1, 17/19362-0, 21/06730-7, 16/17793-1, 19/00452-5, 18/03072-6, 12/19078-7, 16/18818-8, 21/08018-2, 22/07157-1)
DE ABREU, JOAO LUIZ BITTENCOURT; SAMPAIO, CAMILA SOBRAL; BENALCAZAR JALKH, ERNESTO BYRON; HIRATA, RONALDO. Analysis of the color matching of universal resin composites in anterior restorations. Journal of Esthetic and Restorative Dentistry, v. 33, n. 2, p. 269-276, . (18/03072-6, 19/00452-5)
BERGAMO, EDMARA T. P.; LOPES, ADOLFO C. O.; CAMPOS, TIAGO M. B.; AMORIM, PEDRO HENRIQUE; COSTA, FABIO; BENALCAZAR-JALKH, ERNESTO B.; DE CARVALHO, LAURA F.; ZAHOUI, ABBAS; PIZA, MARIANA M. T.; GUTIERRES, ELIEZER; et al. Probability of survival and failure mode of endodontically treated incisors without ferrule restored with CAD/CAM fiber-reinforced composite (FRC) post-cores. JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS, v. 136, p. 10-pg., . (21/06730-7, 19/00452-5, 20/12874-9, 12/19078-7, 21/08018-2, 19/14798-0, 16/18818-8, 20/16500-6, 22/07157-1, 18/03072-6)
BENALCAZAR JALKH, ERNESTO B.; NETO, JUVENAL DE SOUZA; BERGAMO, EDMARA T. P.; MAIA, CAMILA F.; BONFANTE, ESTEVAM A.. Mechanical testing of four-unit implant-supported prostheses with extensive pink gingiva porcelain: The dentogingival prostheses proof of concept. Journal of Esthetic and Restorative Dentistry, . (19/00452-5, 16/18818-8, 18/03072-6, 12/19078-7, 19/08693-1)
BENALCAZAR-JALKH, ERNESTO B.; DE CARVALHO, LAURA F.; ALVES, LARISSA M. M.; CAMPOS, TIAGO M. B.; SOUSA, EDISA DE OLIVEIRA; BERGAMO, EDMARA T. P.; COELHO, PAULO G.; GIERTHMUEHLEN, PETRA C.; SPITZNAGEL, FRANK A.; ZAHOUI, ABBAS; et al. Reliability and Failure Mode of Ti-Base Abutments Supported by Narrow/Wide Implant Systems. DENTISTRY JOURNAL, v. 11, n. 9, p. 11-pg., . (21/06730-7, 21/08018-2, 20/12874-9, 21/07440-2, 16/18818-8, 19/08693-1, 19/00452-5, 22/07157-1, 18/03072-6)
BENALCAZAR JALKH, ERNESTO B.; NETO, JUVENAL DE SOUZA; BERGAMO, EDMARA T. P.; MAIA, CAMILA F.; BONFANTE, ESTEVAM A.. Mechanical testing of four-unit implant-supported prostheses with extensive pink gingiva porcelain: The dentogingival prostheses proof of concept. Journal of Esthetic and Restorative Dentistry, v. 33, n. 4, p. 8-pg., . (12/19078-7, 16/18818-8, 19/08693-1, 19/00452-5, 18/03072-6)
BERGAMO, EDMARA T. P.; YAMAGUCHI, SATOSHI; LOPES, ADOLFO C. O.; COELHO, PAULO G.; DE ARAUJO-JUNIOR, EVERARDO N. S.; JALKH, ERNESTO B. BENALCAZAR; ZAHOUI, ABBAS; BONFANTE, ESTEVAM A.. Performance of crowns cemented on a fiber-reinforced composite framework 5-unit implant-supported prostheses: in silico and fatigue analyses. Dental Materials, v. 37, n. 12, p. 1783-1793, . (19/08693-1, 19/00452-5, 19/14798-0, 18/03072-6)
BENALCAZAR-JALKH, ERNESTO B.; NAYAK, VASUDEV VIVEKANAND; GORY, CHRISTINA; MARQUEZ-GUZMAN, ANDRES; BERGAMO, EDMARA T. P.; TOVAR, NICK; COELHO, PAULO G.; BONFANTE, ESTEVAM A.; WITEK, LUKASZ. Impact of implant thread design on insertion torque and osseointegration: a preclinical model. MEDICINA ORAL PATOLOGIA ORAL Y CIRUGIA BUCAL, v. 28, n. 1, p. 8-pg., . (21/06730-7, 19/00452-5, 12/19078-7, 21/08018-2, 16/18818-8, 19/08693-1, 22/07157-1, 18/03072-6)
PARRA, MARCELO; BENALCAZAR JALKH, ERNESTO B.; TOVAR, NICK; TORRONI, ANDREA; BADALOV, RAFAEL M.; BONFANTE, ESTEVAM A.; NAYAK, VASUDEV; CASTELLANO, ARTHUR; COELHO, PAULO G.; WITEK, LUKASZ. The Influence of Surface Treatment on Osseointegration of Endosteal Implants Presenting Decompressing Vertical Chambers: An In Vivo Study in Sheep. INTERNATIONAL JOURNAL OF ORAL & MAXILLOFACIAL IMPLANTS, v. 37, n. 5, p. 8-pg., . (21/06730-7, 19/00452-5, 12/19078-7, 16/18818-8, 18/03072-6)
BENALCAZAR JALKH, E. B.; MACHADO, C. M.; GIANINNI, M.; BELTRAMINI, I; PIZA, M. M. T.; COELHO, P. G.; HIRATA, R.; BONFANTE, E. A.. Effect of Thermocycling on Biaxial Flexural Strength of CAD/CAM, Bulk Fill, and Conventional Resin Composite Materials. Operative Dentistry, v. 44, n. 5, p. E254-E262, . (19/00452-5, 12/19078-7, 18/03072-6, 16/18818-8, 16/18657-4)
BERGAMO, EDMARA T. P.; DE ARAUJO-JUNIOR, EVERARDO N. S.; LOPES, ADOLFO C. O.; COELHO, PAULO G.; ZAHOUI, ABBAS; BENALCAZAR JALKH, ERNESTO B.; BONFANTE, ESTEVAM A.. Failure Modes and Survival of Anterior Crowns Supported by Narrow Implant Systems. BIOMED RESEARCH INTERNATIONAL, v. 2020, p. 11-pg., . (12/19078-7, 16/18818-8, 19/08693-1, 19/00452-5, 18/03072-6, 19/14798-0)
PACHECO-VERGARA, MARIA JESUS; BENALCAZAR-JALKH, ERNESTO BYRON; NAYAK, VASUDEV V.; BERGAMO, EDMARA T. P.; CRONSTEIN, BRUCE; ZETOLA, ANDRE LUIS; WEISS, FERNANDO PESSOA; GROSSI, JOAO RICARDO ALMEIDA; DELIBERADOR, TATIANA MIRANDA; COELHO, PAULO G.; et al. Employing Indirect Adenosine 2(A) Receptors (A(2A)R) to Enhance Osseointegration of Titanium Devices: A Pre-Clinical Study. JOURNAL OF FUNCTIONAL BIOMATERIALS, v. 14, n. 6, p. 13-pg., . (21/08018-2, 19/08693-1, 19/00452-5, 22/07157-1, 18/03072-6)

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