Post-etching cleaning influences the resin shear bond strength to CAD/CAM lithium-disilicate ceramics

Statement of problem The hydrofluoric acid (HF) is able to promote selective dissolution of the glassy phase in silica-based ceramic. However, the etching leaves insoluble silica-fluoride salts in the surface that affects negatively the bond, affirming the need of a post-etching cleaning. Purpose Ev...

Full description

Saved in:
Bibliographic Details
Published in:Applied adhesion science 2017-10, Vol.5 (1), p.1, Article 17
Main Authors: Bruzi, Greciana, Carvalho, Adriana Oliveira, Giannini, Marcelo, Maia, Hamilton Pires, Magne, Pascal
Format: Article
Language:English
Subjects:
Acrylic resins
Adhesion tests
Adhesive bonding
Air drying
Biomaterials
Bond strength
Bonding strength
CAD/CAM
CAM
Ceramic bonding
Ceramics
Chemistry and Materials Science
Cleaning
Composite materials
Computer aided manufacturing
Crystallization
Cylinders
Etching
Hydrofluoric acid
Lithium
Materials Science
Mechanical Engineering
Phosphoric acid
Silica glass
Silicon dioxide
Surfaces and Interfaces
Thin Films
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Statement of problem The hydrofluoric acid (HF) is able to promote selective dissolution of the glassy phase in silica-based ceramic. However, the etching leaves insoluble silica-fluoride salts in the surface that affects negatively the bond, affirming the need of a post-etching cleaning. Purpose Evaluate the shear bond strength (SBS) of composite resin to CAD/CAM lithium-disilicate ceramics after different post-etching cleaning and silane treatments. Methods Twenty-four 2 mm-thick slices of IPS e.max CAD (Ivoclar Vivadent, AG, Schann, Liechtenstein) were crystallized, embedded in acrylic resin, polished and cleaned in an ultrasonic bath. Each specimen was etched with 5% HF for 20 s, rinsed for 60 s, and treatment was completed using surface cleaning and silanization. The cleaning methods were: AW—air/water spray; UB—ultrasonic bath; PA—37% phosphoric acid; and ST—steam cleaning. The cleaned surface received: E—no silane treatment; E/S—silane application for 20 s, air drying for 20 s and hot drying (60 °C) for 20 s; E/S+—silane application for 60 s, air drying for 20 s, hot air drying (60 °C) for 20 s, rinsing with boiling water for 15 s and hot air drying for 20 s. Cylinders of composite resin (n = 12) (Z100, 3M-ESPE, Saint Paul, MN, USA) were bonded using an adhesive resin (Optibond FL adhesive, Kerr Corp, Orange, CA, USA). SBS testing was carried out after 24 h of storage in water. Samples for each post-etching cleaning regimen were analyzed by SEM. Results According to two-way ANOVA (Bonferroni-corrected post hoc tests, p 
ISSN:2196-4351
2196-4351
DOI:10.1186/s40563-017-0096-6