Fatigue survival of bilaminated bioinspired crowns: an in vitro study

• Grant number: 20/07693-5
• Support Opportunities: Scholarships in Brazil - Doctorate
• Effective date (Start): November 01, 2020
• Status: Discontinued
• Field of knowledge: Health Sciences - Dentistry - Dental Materials
• Principal Investigator: Guilherme de Siqueira Ferreira Anzaloni Saavedra
• Grantee: Ana Beatriz Gomes de Carvalho
• Host Institution: Instituto de Ciência e Tecnologia (ICT). Universidade Estadual Paulista (UNESP). Campus de São José dos Campos. São José dos Campos , SP, Brazil
• Associated scholarship(s): 22/03811-9 - 3D printing of poly-L-lactic acid (PLLA) and polycaprolactone (PCL) scaffolds modified with bioglass for bone regeneration, BE.EP.DR

Abstract

The aim of this study will be to evaluate the mechanical behavior and fatigue resistance of bioinspired bilayers crowns with modified infrastructures on the vestibular surface (part A) and using different ceramic materials with different elastic modules to compose these crowns (part B). 105 bioinspired crowns will be made according to the following groups: part A - CI (Conventional Infrastructure), SMI (Stratified Modified Infrastructure) and CMI (Cemented Modified Infrastructure), all made in lithium disilicate + porcelain; part B - LD + LEU (Lithium Disilicate + Leucite), LEU + LD (Leucite + Lithium Disilicate), HC + LD (Hybrid Ceramic + Lithium Disilicate) and HC + LEU (Hybrid Ceramic + Leucite). The crowns will be cemented using light-cured resin cement (Variolink Esthetic LC) on full crown preparations made of G10 resin, and then subjected to the stepwise stress fatigue test. For this, three samples from each group will be submitted to the monotonic test in order to determine the parameters for the fatigue test. The crown fracture marks and failure mode will be evaluated and classified by stereomicroscopy and scanning electron microscopy. Finite Element Analysis (FEA) of all groups will also be carried out to assess the distribution of stresses on bioinspired crowns and on dental preparations, according to each one of the parts. (AU)

Scientific publications

(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)

GOMES DE CARVALHO, ANA BEATRIZ; DE ANDRADE, GUILHERME SCHMITT; MENDES TRIBST, JOAO PAULO; GRASSI, ELISA DONARIA ABOUCAUCH; AUSIELLO, PIETRO; SAAVEDRA, GUILHERME DE SIQUEIRA FERREIRA ANZALONI; BRESSANE, ADRIANO; MARQUES DE MELO, RENATA; BORGES, ALEXANDRE LUIZ SOUTO. echanical Behavior of Different Restorative Materials and Onlay Preparation Designs in Endodontically Treated Molar. ATERIAL, v. 14, n. 8, APR 2021. (20/07693-5)

PILECCO, RAFAELA OLIVEIRA; ZUCUNI, CAMILA PAULESKI; DE CARVALHO, ANA BEATRIZ GOMES; SAAVEDRA, GUILHERME DE SIQUEIRA FERREIRA ANZALONI; MARINHO, RENATA MARQUES DE MELO; PEREIRA, GABRIEL KALIL ROCHA; VALANDRO, LUIZ FELIPE. Polishing the bonding surface, before or after crystallization, does not alter the fatigue behavior of bonded CAD-CAM lithium disilicate. JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS, v. 142, p. 7-pg., 2023-04-08. (20/07693-5)