Evaluation of Er: YAG laser conditioning with two pulse modes on shear bond strength of orthodontic brackets
Session
Dental Science
Description
The aim of this in vitro study is to compare the shear bond strength (SBS) of orthodontic brackets bonded to enamel prepared by Er: YAG laser with two pulse modes and conventional acid etching. Samples (n=30) were divided into 5 groups. Gr 1 was etched with 37% phosphoric acid for 30 s, Gr 2 with Er:YAG laser (SSP, 90 μs) for 15 s, Gr 3 with Er:YAG laser (SSP, 90 μs) for 10 s + 37% phosphoric acid for 30 s, Gr 4 with Er:YAG laser (QSP, 600 μs) for 15 s, and Gr 5 with Er:YAG laser (QSP, 600 μs) 10 s + 37% phosphoric acid for 30 s. All groups were subjected to 12000 thermal cycles. Quasar 2.5 testing machine was used to measure shear bond strength. Group 3 showed a higher mean of shear bond strength (12.85 ± 6.97 MPa) compared to the control group (11.74 ± 3.53 MPa). One-way ANOVA results showed no statistically significant difference among the groups (F = 0.305, p = 0.872).
Keywords:
Orthodontic brackets, acid etching, Er: YAG laser, shear bond strength
Proceedings Editor
Edmond Hajrizi
ISBN
978-9951-982-41-2
Location
UBT Lipjan, Kosovo
Start Date
25-10-2025 9:00 AM
End Date
26-10-2025 6:00 PM
DOI
10.33107/ubt-ic.2025.121
Recommended Citation
Aliu, Kaltrina; Malgaj, Tine; Stavileci, Miranda; and Aliu, Fisnik, "Evaluation of Er: YAG laser conditioning with two pulse modes on shear bond strength of orthodontic brackets" (2025). UBT International Conference. 10.
https://knowledgecenter.ubt-uni.net/conference/2025UBTIC/DS/10
Evaluation of Er: YAG laser conditioning with two pulse modes on shear bond strength of orthodontic brackets
UBT Lipjan, Kosovo
The aim of this in vitro study is to compare the shear bond strength (SBS) of orthodontic brackets bonded to enamel prepared by Er: YAG laser with two pulse modes and conventional acid etching. Samples (n=30) were divided into 5 groups. Gr 1 was etched with 37% phosphoric acid for 30 s, Gr 2 with Er:YAG laser (SSP, 90 μs) for 15 s, Gr 3 with Er:YAG laser (SSP, 90 μs) for 10 s + 37% phosphoric acid for 30 s, Gr 4 with Er:YAG laser (QSP, 600 μs) for 15 s, and Gr 5 with Er:YAG laser (QSP, 600 μs) 10 s + 37% phosphoric acid for 30 s. All groups were subjected to 12000 thermal cycles. Quasar 2.5 testing machine was used to measure shear bond strength. Group 3 showed a higher mean of shear bond strength (12.85 ± 6.97 MPa) compared to the control group (11.74 ± 3.53 MPa). One-way ANOVA results showed no statistically significant difference among the groups (F = 0.305, p = 0.872).