Alternate way of etching enamel for effective clinical management during practice

Arora, Kanwer Singh; Shetty, Pradeep Chandra; Ramachandra, CS; Laxmikanth, S. M.; Sham, NB

doi:10.4103/0976-2868.106646

Cited by 1 publication

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“…Whereas the SBS value at 2 W for 10 s was 12.13 ± 3.30 MPa, which was the highest SBS obtained in this study and was greater than the SBS value of the acid-etched group; however, the difference was not statistically significant, followed by the SBS value obtained at 2.5 W for 10 s (11.65 ± 7.04 MPa), which was clinically acceptable and comparable with the mean SBS value obtained from acid-etched samples. This agrees with the study of Aroa et al [ 32 ], who found SBS achieved by laser etching at 2 W and 2.5 W power for 15 s was comparable to phosphoric acid etching, but in a scanning electron microscope in 2.5 W, it was noticed that there is more destruction of the enamel.…”

Section: Discussionsupporting

confidence: 92%

“…The appropriate time for acid etching ranged from 15 s to 60 s. Barkmeirer et al [ 31 ] showed that the proper time for acid etching using phosphoric acid (37%) for good adhesion in orthodontic bonding was 15 s. In most of the previous studies, Basaran et al [ 14 ] and Arora et al [ 32 ] used the erbium lasers (Er,Cr:YSGG or Er,YAG) to etch the enamel surface with different laser outputs and constant time 15s, in accordance with the time required for etching enamel with phosphoric acid (37%).…”

Section: Discussionmentioning

confidence: 99%

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Effects of Er, Cr: YSGG Laser on Shear Bond Strength of the Orthodontic Brackets for 5 and 10 Seconds: An In Vitro Study

Bagwan

Abuaffan

Alrahlah

et al. 2022

International Journal of Dentistry

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Objectives. The study designed to compare the effect of erbium, chromium: yttrium-scandium-gallium-garnet (Er, Cr: YSGG) laser at different power outputs and short periods of time (5 and 10 s) and acid etching on the shear bond strength (SBS) and failure mode of metallic orthodontic brackets. Material and methods. A total of sixty-nine human premolars extracted for orthodontic purposes were used. 60 teeth were randomly assigned to one of the five treatment groups. (n = 12): group 1: 37% phosphoric acid etching and groups 2–5: the enamel surface irradiated by the Er, Cr: YSGG laser operated at different power outputs (1 W, 1.5 W, 2 W, and 2.5 W), each laser group was divided into two subgroups (n = 6) according to exposure time (5 s and 10 s). Nine teeth were not subjected to SBS testing but were prepared for scanning electron microscopy (SEM). The nonparametric Kruskal–Wallis test was used to evaluate the data; the SBS and adhesive remanent index (ADI) were evaluated. Results. The mean SBS for all laser groups and the acid-etched group were comparable, with no significant differences except for the 1 W group for 5 and 10 s and the 1.5 W group for 5 s. For the ARI scores, no statistically significant difference was found among the groups ( P = 0.059 ), and the majority of the samples had ARI type 2 or 3. Conclusion. The laser irradiation at 2 and 2.5 W for 5 s was similar to that produced by acid etching, whereas the laser irradiation at 2 and 2.5 W at 10 s was higher compared with that obtained with acid etching and adequate to etch the enamel.

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Section: Discussionsupporting

confidence: 92%