Femtosecond laser settings for optimal bracket bonding to zirconia

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dc.contributor.authorGarcía-Sanz, Verónica
dc.contributor.authorParedes-Gallardo, Vanessa
dc.contributor.authorBellot-Arcís, Carlos
dc.contributor.authorMartínez-León, Lluís
dc.contributor.authorTorres-Mendieta, Rafael
dc.contributor.authorMontero, Javier
dc.contributor.authorAlbaladejo, Alberto
dc.date.accessioned2019-08-22T07:44:11Z
dc.date.available2019-08-22T07:44:11Z
dc.date.issued2019-03
dc.description.abstractBonding orthodontic brackets to ceramic materials is a challenging procedure; femtosecond (FS) laser conditioning could provide improved results, but the ideal settings for effective bracket-zirconia bonding have never been established. This study aimed to analyze the differences in surface roughness and shear bond strength (SBS) produced by different femtosecond laser settings and establish a protocol to prepare zirconia surfaces for optimal adhesion to metal orthodontic brackets. One hundred eighty zirconia samples were assigned to six groups according to surface treatment: (1) control; (2) air-particle abrasion (APA); (3) FS laser irradiation (300 mW output power, 60 mu m inter-groove distance); (4) FS laser irradiation (200 mW, 100 mu m); (5) FS laser irradiation (40 mW, 60 mu m); and (6) FS laser irradiation (200 mW, 60 mu m). Surface roughness was measured. Orthodontic brackets were bonded to the zirconia specimens, and SBS was measured. SBS in groups 3 and 6 was significantly higher than the other groups (5.92 +/- 1.12 MPa and 5.68 +/- 0.94 MPa). No significant differences were found between groups 1, 2, 4, and 5 (3.87 +/- 0.77 MPa, 4.25 +/- 0.51 MPa, 3.74 +/- 0.10 MPa, and 3.91 +/- 0.53 MPa). Surface roughness was significantly greater for FS laser than for control and APA groups (p = 1.28 x 10(-8)). FS laser at 200 mW, 60 mu m can be recommended as the ideal settings for treating zirconia surfaces, producing good SBS and more economical energy use.cs
dc.format.extent8 strancs
dc.identifier.WebofScienceResearcherIDN-7426-2018 Torres-Mendieta, Rafael
dc.identifier.doi10.1007/s10103-018-2589-3
dc.identifier.urihttps://dspace.tul.cz/handle/15240/153230
dc.identifier.urihttps://link.springer.com/article/10.1007%2Fs10103-018-2589-3
dc.language.isocscs
dc.relation.ispartofLASERS IN MEDICAL SCIENCE
dc.subjectFemtosecond lasercs
dc.subjectDental ceramiccs
dc.subjectOrthodontic bracketscs
dc.subjectPulsed lasercs
dc.subjectAdhesioncs
dc.subjectSurface roughnesscs
dc.titleFemtosecond laser settings for optimal bracket bonding to zirconiacs
local.citation.epage304
local.citation.spage297
local.relation.issue2
local.relation.volume34
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