Etching enamel for orthodontics with an erbium, chromium:yttrium-scandium-gallium-garnet laser system

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Tarih

2007

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

E H Angle Education Research Foundation, Inc

Erişim Hakkı

info:eu-repo/semantics/openAccess

Özet

Objective: To test the shear bond strength, surface characteristics, and fracture mode of brackets that are bonded to enamel etched with an erbium, chromium:yttrium-scandium-gallium-garnet (Er,Cr:YSGG) laser operated at different power outputs: 0.5 W, 1 W, and 2 W. Materials and Methods: Human premolars that had been extracted for orthodontic purposes were used. Enamel was etched with an Er,Cr:YSGG laser system operated at one of three power outputs or with orthophosphoric acid. Results: The shear bond strength associated with the 0.5-W laser irradiation was significantly less than the strengths obtained with the other irradiations. Both the 1-W and 2-W laser irradiations were capable of etching enamel in the same manner. This finding was confirmed by scanning electron microscopy examination. The evaluation of adhesive-remnant-index scores demonstrated no statistically significant difference in bond failure site among the groups, except for the 0.5-W laser-etched group. Generally, more adhesive was left on the enamel surface with laser irradiation than with acid etching. Conclusion: The mean shear bond strength and enamel surface etching obtained with an Er,Cr: YSGG laser (operated at 1 W or 2 W for 15 seconds) is comparable to that obtained with acid etching.

Açıklama

Anahtar Kelimeler

Er,Cr : Ysgg Laser System, Laser Irradiation, Sem Examination, Shear Bond Strength

Kaynak

Angle Orthodontist

WoS Q Değeri

Q4

Scopus Q Değeri

Q1

Cilt

77

Sayı

1

Künye