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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effect of the bonding strategy on the tensile retention of full-contour zirconia crowns

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Author(s):
Feitosa, Sabrina A. [1, 2] ; Campos, Fernanda [1] ; Yoshito, Walter Kenji [3] ; Lazar, Dolores R. R. [3] ; Ussui, Valter [3] ; Valandro, Luiz Felipe [1, 4] ; Bottino, Marco A. [1] ; Bottino, Marco C. [5]
Total Authors: 8
Affiliation:
[1] Univ Estadual Paulista UNESP, Inst Sci & Technol, Dept Dent Mat & Prosthodont, Sao Jose Dos Campos, SP - Brazil
[2] IUSD, Div Dent Biomat, Dept Biomed & Appl Sci, Indianapolis, IN - USA
[3] Inst Energy & Nucl Res IPEN, Mat Sci & Technol Ctr, Sao Paulo, SP - Brazil
[4] Univ Fed Santa Maria, Sch Dent, Prosthodont Unit, PhD Grad Program Oral Sci, Santa Maria, RS - Brazil
[5] Univ Michigan, Sch Dent, Dept Cariol Restorat Sci & Endodont, 1011N Univ Ave Rm 5223, Ann Arbor, MI 48109 - USA
Total Affiliations: 5
Document type: Journal article
Source: INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES; v. 85, p. 106-112, OCT 2018.
Web of Science Citations: 1
Abstract

This study evaluated the effect of distinct bonding strategies on the retention of fullcontour zirconia ceramic (Y-TZP, FCZ) crowns, and it characterized some physicochemical and mechanical properties of FCZ ceramic and its corresponding glazing system. To evaluate retention strength, dies were made with a dentinanalogue material to simulate a prepared tooth. FCZ crowns were manufactured using CADCAM technology and allocated into groups according to the bonding strategy: no ceramic treatment (PF Panavia F cementation), glaze (GL), tribochemical silica coating (CJ), CJ + GL, and piranha solution followed by glaze (PS + GL). The specimens were subjected to thermocycling and storage in distilled water for 100 days before the retention tests. FCZ presented a porosity volume fraction of 0.2%, an apparent density of 6.06 g/cm(3), Vickers hardness of 12.4 +/- 0.07 GPa, and fracture toughness of 5.54 +/- 0.24 MPa m(1/2). SEM revealed a homogeneous microstructure composed of submicron-sized grains. XRD identified mainly zirconia's tetragonal phase. Glaze powder morphology was observed to be irregular, with a nanometric particle size, and a diffraction pattern characteristic of an amorphous material with several peaks of leucite. The PF and GL groups had higher retention values. The majority of the groups presented pre-test bonding failures, and two catastrophic failures of the FCZ-crown (GL and PF groups) were noted. The use of an MDP-containing resin cement or glaze application might improve retention of the FCZ crowns. (AU)

FAPESP's process: 12/02945-0 - Characterization and evaluation of adherence to a policristalina of tetragonal zirconia ceramic partially stabilized with yttria
Grantee:Sabrina Feitosa Sochacki
Support Opportunities: Scholarships in Brazil - Doctorate