Effects of femtosecond laser and other surface treatments on the bond strength of metallic and ceramic orthodontic brackets to zirconia
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Other documents of the author: García-Sanz, Verónica; Paredes-Gallardo, Vanessa; Bellot-Arcís, Carlos; Mendoza-Yero, Omel; Doñate-Buendía, Carlos; Montero, Javier; Albadalejo, Alberto
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comunitat-uji-handle3:10234/43643
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Title
Effects of femtosecond laser and other surface treatments on the bond strength of metallic and ceramic orthodontic brackets to zirconiaAuthor (s)
Date
2017Publisher
Public Library of ScienceISSN
1932-6203Bibliographic citation
Garcı´a-Sanz V, Paredes-Gallardo V, Bellot-Arcı´s C, Mendoza-Yero O, Doñate-Buendı´a C, Montero J, et al. (2017) Effects of femtosecond laser and other surface treatments on the bond strength of metallic and ceramic orthodontic brackets to zirconia. PLoS ONE 12(10): e0186796. https://doi.org/10.1371/journal.pone.0186796Type
info:eu-repo/semantics/articleVersion
info:eu-repo/semantics/publishedVersionAbstract
Femtosecond laser has been proposed as a method for conditioning zirconia surfaces to
boost bond strength. However, metallic or ceramic bracket bonding to femtosecond lasertreated
zirconia surfaces has not been ... [+]
Femtosecond laser has been proposed as a method for conditioning zirconia surfaces to
boost bond strength. However, metallic or ceramic bracket bonding to femtosecond lasertreated
zirconia surfaces has not been tested. This study compared the effects of four conditioning
techniques, including femtosecond laser irradiation, on shear bond strength (SBS) of
metallic and ceramic brackets to zirconia.Three hundred zirconia plates were divided into
five groups: 1) control (C); 2) sandblasting (APA); 3) silica coating and silane (SC); 4) femtosecond
laser (FS); 5) sandblasting followed by femtosecond laser (APA+SC). A thermal
imaging camera measured temperature changes in the zirconia during irradiation. Each
group was divided into 2 subgroups (metallic vs ceramic brackets). SBS was evaluated
using a universal testing machine. The adhesive remnant index (ARI) was registered and
surfaces were observed under SEM. Surface treatment and bracket type significantly
affected the bracket-zirconia bond strength. SBS was significantly higher (p<0.001) for
ceramic brackets in all groups (APA+FS > APA > FS > SC > control) than metallic brackets
(APA+FS > FS > SC > APA > control). For metallic brackets, groups SC (5.99 ± 1.86 MPa),
FS (6.72 ± 2.30 MPa) and APA+FS (7.22 ± 2.73 MPa) reported significantly higher bond
strengths than other groups (p < 0.05). For ceramic brackets, the highest bond strength values
were obtained in groups APA (25.01 ± 4.45 MPa), FS (23.18 ± 6.51 MPa) and APA+FS
(29.22 ± 8.20 MPa).Femtosecond laser enhances bond strength of ceramic and metallic
brackets to zirconia. Ceramic brackets provide significantly stronger adhesion than metallic
brackets regardless of the surface treatment method. [-]
Is part of
PLoS ONE 12(10): e0186796Investigation project
PROMETEU/2016/079 ; FIS2016-75618-RRights
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