Atomic analysis and knoop hardness measurement of the cavity floor prepared by Er,Cr:YSGG laser irradiation <i>in vitro</i>

Hossain, Mozammal; Nakamura, Yukio; Tamaki, Yukimichi; Yamada, Yuya; Murakami, Yoshiko; Matsumoto, Koukichi

doi:10.1046/j.1365-2842.2003.01113.x

Cited by 96 publications

(78 citation statements)

References 28 publications

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“…Although some researchers have reported that the mean shear bond strength resulting from laser etching is lower than that from acid etching, 11,19,20 others have reported more favorable results with laser irradiation. 12,21,22 In the present study, we found the highest bond strength in the acid-etched group (14.85 MPa Ϯ 4.59 MPa), followed by the 2-W laser-etched group (11.14 MPa Ϯ 4.75 MPa) and the 1-W laser-etched group (9.88 MPa Ϯ 4.43 MPa).…”

Section: Discussionmentioning

confidence: 99%

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Etching Enamel for Orthodontics with an Erbium, Chromium:Yttrium-Scandium-Gallium-Garnet Laser System

Başaran

Özer

Berk³

et al. 2007

The Angle Orthodontist

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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.

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Section: Discussionmentioning

confidence: 99%

“…To prevent bacterial growth, the water was changed weekly. 11 Sixty teeth were mounted horizontally in a self-curing acrylic resin so that at least 2 mm of the buccal enamel was exposed. The buccal enamel surfaces of the teeth were pumiced, washed for 30 seconds, and dried for 10 seconds.…”

Section: Methodsmentioning

confidence: 99%

Etching Enamel for Orthodontics with an Erbium, Chromium:Yttrium-Scandium-Gallium-Garnet Laser System

Başaran

Özer

Berk³

et al. 2007

The Angle Orthodontist

View full text Add to dashboard Cite

show abstract

“…It has been studied for Class V cavity preparations and caries removal, and was shown to produce irregular, rugged, and stripped surfaces on dentin, similar to the morphological changes observed in Er: YAG laserirradiated dentin 3,4) . Compared with conventional mechanical drilling systems, laser preparation produced a cavity floor with Ca/P ratio and Knoop hardness number similar to that produced by bur cutting method 5) . In addition, Er, Cr: YSGG laser preparation was capable of causing significant reductions in Escherichia coli and Enterococcus faecalis 6) .…”

Section: Introductionmentioning

confidence: 86%

Tensile Bond Strength of Er, Cr: YSGG Laser-irradiated Human Dentin to Composite Inlays with Two Resin Cements

Tseng

Chen

et al. 2007

Dent. Mater. J.

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The purpose of this study was to investigate the tensile bond strength of composite inlays to human dentin with two different cavity preparation tools (bur versus Er, Cr: YSGG laser) and with two different bonding procedures (total-etch: Variolink II versus self-etch: Maxcem). The specimens were divided into four groups: bur-cut/Variolink II, bur-cut/Maxcem, laser-ablated/Variolink II, and laser-ablated/Maxcem. The following characteristics were then investigated: morphological change, dentin-resin cement interface, surface roughness, and tensile bond strength. Results demonstrated that the tensile bond strengths of the four groups were 19.11±5.88 MPa, 8.54±2.38 MPa, 13.72±3.43 MPa, and 12.11±3.71 MPa, respectively. We concluded that Variolink II provided higher tensile bond strength to composite inlays than Maxcem. On the other hand, the bond strength of Variolink II with dentin cavity prepared by Er, Cr: YSGG laser was statistically lower than that prepared by bur.

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“…[10][11][12][13][14][15][16] Bazı çalıĢmalarda kumlama ve lazer uygulamalarının asit uygulanmasına alternatif olacağı görüĢü var iken, baĢka çalıĢmalarda bu görüĢün tersi iddialar ortaya atılmıĢtır. [17][18][19][20][21][22][23][24][25][26][27] Sonuç olarak, bugüne kadar yapılan farklı çalıĢmalardan ortaya çıkan ortak bir görüĢ mevcut değildir. Bu nedenle, bu çalıĢma dört farklı pürüzlendirme yönteminin ortodontik braketlerin mineye makaslama bağlanma dayanımı üzerine etkisini incelemeyi amaçlamaktadır.…”

Section: Gġrġġunclassified

Mi̇neye Farkli Yüzey Pürüzlendi̇rme Metotlariyla Yapiştirilmiş Braketleri̇n Makaslama Ağlanma Dayanimlari

SABUNCUOĞLU¹,

ERŞAHAN²,

ERTÜRK³

2016

Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi

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ÖZAmaç: Bu in vitro çalıĢmanın amacı dört farklı pürüz-lendirme yönteminin ortodontik braketlerin makaslama bağlanma dayanımı üzerine etkisini incelemektir. Metod: Bu çalıĢmada 40 yeni çekilmiĢ üst 1. premolar insan diĢi kullanıldı ve mine yüzey tedavi tipine bağlı olarak rastgele dört gruba ayrıldı (n=10): I, asitle pürüzlendirme; II, Er:YAG lazer; III, Er:YAG lazer + asit pürüzlendirme; IV, alüminyum oksit ile kumlama. DiĢler dikey bir pozisyonda kendi kendine sertleĢen akrilik içerine gömüldü ve böylece kronları açığa çıktı Paslanmaz çelik premolar braketleri standart bir iĢ-lemle tüm diĢlere yapıĢtırıldı ve tüm diĢler SBS testine tabii tutuldu. Sonra, her bir örnek için artık adeziv indeksi (adhesive remnant index -ARI) değerlendirildi. Kırılma modları miktar olarak bir stereomikroskopla ve morfolojik olarak da bir tarama elektron mikroskopu (scanning electron microscope-SEM) altında değerlen-dirildi. Ġstatistiksel analiz anlamlılık seviyesi 0.05'de kararlaĢtırılarak tek yönlü varyans analizi ve Tukey çoklu karĢılaĢtırma testi ile yapıldı. Bulgular: Her bir grup için ortalama makaslama test değerleri sırasıyla Ģöyledir: I, 10.21 ± 0.8; II, 9.33 ± 1.2; III, 13.46 ± 0.7; IV, 3.36 ± 0.6. III. grup (ErYAG lazer + asit pürüzlendirme) en yüksek SBS değerlerini gösterirken, IV. grup (kumlama) en düĢük SBS değer-lerini gösterdi ve kumlama ve diğer gruplar arasında istatistiksel olarak anlamlı bir farklılık gözlendi. ARI skorlarının değerlendirilmesi III.grupta mine yüzeyinde daha fazla adezivin kaldığını gösterdi. Sonuç: Mevcut bulgular yüzey pürüzlendirme için uygun parametrelerle Er:YAG lazerden faydalanmanın mümkün olduğudur. Anahtar Kelimeler: Makaslama bağlanma dayanımı, kumlama, Er-YAG lazer, asitle pürüzlendirme, ortodontik bağlanma. ABSTRACT Aim:The purpose of this in vitro study is to evaluate the effect of four different conditioning methods on the shear bond strength (SBS) of orthodontic brackets. Methods: In this study 40 freshly extracted upper first premolar human teeth were used and randomly divided into four groups (n=10), according to the type of the enamel surface treatment: I, acid etching; II, Er:YAG laser; III, Er:YAG laser + acid-etching; IV, sandblasting with aluminum oxide. The teeth were embedded in self cure acrylic in a vertical position so that the crowns were exposed. Stainless steel premolar brackets were bonded to all teeth with a standard procedure and all teeth were subjected to SBS test. The adhesive remnant index (ARI) was then evaluated for each specimen. Failure modes were assessed quantitatively under a stereomicroscope and morphologically under a scanning electron microscope (SEM). Statistical analysis was performed using oneway analysis of variance and the post hoc Tukey test, with the significance level set at 0.05. Results: Mean shear test values for each group were as follows: I, 10.21 ± 0.8; II, 9.33 ± 1.2; III, 13.46 ± 0.7; IV, 3.36 ± 0.6. While group III (ErYAG laser + acid-etched) showed the highest SBS values, group IV (sandblasting) showed the lowest SBS values and a ...

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Atomic analysis and knoop hardness measurement of the cavity floor prepared by Er,Cr:YSGG laser irradiation in vitro

Cited by 96 publications

References 28 publications

Etching Enamel for Orthodontics with an Erbium, Chromium:Yttrium-Scandium-Gallium-Garnet Laser System

Etching Enamel for Orthodontics with an Erbium, Chromium:Yttrium-Scandium-Gallium-Garnet Laser System

Tensile Bond Strength of Er, Cr: YSGG Laser-irradiated Human Dentin to Composite Inlays with Two Resin Cements

Mi̇neye Farkli Yüzey Pürüzlendi̇rme Metotlariyla Yapiştirilmiş Braketleri̇n Makaslama Ağlanma Dayanimlari

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