title: The effect of thermal cycling on the shear bond strength of porcelain/Ti-6Al-4V interfaces.
abstract: The aim of the study was to evaluate the effect of thermal cycling on the shear bond strength of the porcelain/Ti-6Al-4V interfaces prepared by two different processing routes and metallic surface conditions. Polished and SiO2 particle abraded Ti-6Al-4V alloy and Triceram bonder porcelain were used to produce the interfaces. Porcelain-to-metal specimens were processed by conventional furnace firing and hot pressing. Thermal cycling was performed in Fusayama's artificial saliva for 5000 cycles between 5 ± 1 and 60 ± 2°C. After thermal cycling, shear bond tests were carried out by using a custom-made stainless steel apparatus. The results were analyzed using t-Student test and non-parametric Kruskal-Wallis test (p<0.01). Most of the polished-fired specimens were fractured during thermal cycling; thus, it was not possible to obtain the shear bond strength results for this group. Sandblasted-fired, polished-hot pressed, and sandblasted-hot pressed specimens presented the shear bond strength values of 76.2 ± 15.9, 52.2 ± 23.6, and 59.9 ± 22.0 MPa, respectively. Statistical analysis indicated that thermal cycling affected the polished specimens processed by firing, whereas a significant difference was not observed on the other groups.
authors: Centre for Mechanics and Materials Technologies (CT2M), Universidade do Minho, Azurém, 4800-058 Guimarães, Portugal.
authors: Isabel A
authors: IA
authors: Sendão
authors: Centre for Mechanics and Materials Technologies (CT2M), Universidade do Minho, Azurém, 4800-058 Guimarães, Portugal.
authors: Alexandra C
authors: AC
authors: Alves
authors: Department of Dental Materials and Prosthodontics, School of Dentistry of Araraquara-UNESP, 14801-903 Araquara, SP, Brazil.
authors: Rodrigo
authors: R
authors: Galo
authors: Centre for Mechanics and Materials Technologies (CT2M), Universidade do Minho, Azurém, 4800-058 Guimarães, Portugal; Universidade do Minho, Dept. Eng. Mecânica, Azurém, 4800-058 Guimarães, Portugal. Electronic address: ftoptan@dem.uminho.pt.
authors: Fatih
authors: F
authors: Toptan
authors: Centre for Mechanics and Materials Technologies (CT2M), Universidade do Minho, Azurém, 4800-058 Guimarães, Portugal; Universidade do Minho, Dept. Eng. Mecânica, Azurém, 4800-058 Guimarães, Portugal.
authors: Filipe S
authors: FS
authors: Silva
authors: Centre for Mechanics and Materials Technologies (CT2M), Universidade do Minho, Azurém, 4800-058 Guimarães, Portugal; Universidade do Minho, SEMAT/UM, Azurém, 4800-058 Guimarães, Portugal.
authors: Edith
authors: E
authors: Ariza
mesh_terms: D000497:Alloys; D003776:Dental Porcelain; D008422:Materials Testing; D033081:Shear Strength; D013314:Stress, Mechanical; D013499:Surface Properties; D013696:Temperature; D014025:Titanium
chemical_list: D000497:Alloys; D003776:Dental Porcelain; C031462:titanium alloy (TiAl6V4); D014025:Titanium
keywords: Dental porcelain; Hot pressing; Shear bond strength; Thermal cycling; Titanium alloy