Effect of femtosecond laser beam angle on bond strength of zirconia-resin cement

Yttrium-stabilized tetragonal zirconia polycrystalline (Y-TZP) ceramic is widely used as an all-ceramic core material because of its enhanced mechanical and aesthetic properties. The bond strength of Y-TZP restorations affects long-term success; hence, surface treatment is required on ceramic bounda...

Full description

Saved in:

Bibliographic Details
Published in:	Lasers in medical science Vol. 30; no. 8; pp. 2123 - 2128
Main Authors:	Akpinar, Yusuf Z., Kepceoglu, Abdullah, Yavuz, Tevfik, Aslan, Muhammed A., Demirtag, Zulfikar, Kılıc, Hamdi S., Usumez, Aslihan
Format:	Journal Article
Language:	English
Published:	London Springer London 01-11-2015 Springer Nature B.V
Subjects:	Aesthetics Analysis of variance Beamforming Cement Cements Ceramics Crystallization Dental Bonding Dental Cements - radiation effects Dentistry Laser beams Laser surgery Lasers Materials Testing Medicine Medicine & Public Health Microscopy, Electron, Scanning Optical Devices Optics Original Article Photonics Polymers Quantum Optics Resin Cements - radiation effects Resins Shear Strength Tetragonal zirconia polycrystals Time Factors Yttria stabilized zirconia Yttrium - chemistry Zirconium Zirconium - radiation effects Zirconia Femtosecond laser Laser beam angle Y-TZP Shear bond strength Surface treatment
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	Yttrium-stabilized tetragonal zirconia polycrystalline (Y-TZP) ceramic is widely used as an all-ceramic core material because of its enhanced mechanical and aesthetic properties. The bond strength of Y-TZP restorations affects long-term success; hence, surface treatment is required on ceramic boundaries. This study evaluated the effect of different laser beam angles on Y-TZP–resin cement shear bond strength (SBS). Forty plates of Y-TZP ceramics were randomly assigned to four groups ( n = 10). A femtosecond amplifier laser pulse was applied on Y-TZP surface with different incidence angles (90°, 75°, 60°, 45°). The resin cement was adhered onto the zirconia surfaces. The SBS of each sample was measured using universal testing machine at crosshead speed of 1 mm/min. The SBS was analyzed through one-way analysis of variance (ANOVA)/Tukey tests. The results showed that the degree of laser beam angle affects the SBS of resin cement to Y-TZP. The laser beam was applied to a surface with a 45° angle which resulted in significantly higher SBS (18.2 ± 1.43 MPa) than other groups (at 90° angulation (10.79 ± 1.8 MPa), at 75° (13.48 ± 1.2 MPa) and at 60° (15.85 ± 0.81 MPa); p < 0.001). This study shows that decreasing of the angle between the ceramic surface and the laser beam increased the SBS between the resin cement and the ceramic material, as well as the orifice.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0268-8921 1435-604X
DOI:	10.1007/s10103-015-1762-1