A comparative study of the removal of smear layer by three endodontic irrigants and two types of laser

Takeda, Frank Hirono; Harashima, Tomomi; Kimura, Yuichi; Matsumoto, Koukichi

doi:10.1046/j.1365-2591.1999.00182.x

Cited by 199 publications

(189 citation statements)

References 30 publications

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“…4,5 After laser etching, physical changes such as melting and recrystallization occur in the enamel. Numerous pores and bubblelike inclusions appear, similar to those in the type III etching pattern produced by orthophosphoric acid, described by Silverstone et al 2 Therefore, laser irradiation may be a feasible method to etch enamel surfaces.…”

Section: Introductionmentioning

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

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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: Introductionmentioning

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

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show abstract

“…Também foram unânimes os achados quanto ao pH das soluções: quanto mais ácido o pH (pH original) maior a capacidade das soluções em remover smear layer e desobstruir túbulos dentinários 74,75 . No entanto, um estudo recentemente publicado 23 contradiz a literatura ao afirmar que, a mistura de EDTA tetrasódico alcalino (EDTANa 4 ) associado ao NaOCL promove maior remoção de smear layer, desde que a mistura de ambas as soluções seja realizada imediatadamente antes do uso, para evitar a redução de íons cloro livre disponíveis.…”

Section: Discussionunclassified

A eficácia da solução de EDTA na remoção de smear layer e sua relação com o tempo de uso: uma revisão integrativa

Mafra¹,

Girelli²,

Xavier³

et al. 2017

Rev. da Fac. de Odontologia, UPF

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A eficácia da solução de EDTA na remoção de smear layer e sua relação com o tempo de uso: uma revisão integrativa IntroduçãoO sucesso do tratamento endodôntico está intimamente relacionado à qualidade da limpeza e desinfecção do sistema de canais radiculares (SCR), obtido por meio da eliminação ou pelo menos redução do conteúdo orgânico e inorgânico contaminado do interior dos canais 1,2 . Para atingir tais objetivos, os canais são submetidos ao preparo químico mecâ-nico (PQM).O PQM é considerado um requisito chave para o sucesso da terapia endodôntica, uma vez que consiste na limpeza e modelagem -clean and shape-do

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“…It should be considered that the proper amount of energy for elimination of different species of bacteria may be different, for example according to the results of the study by Noiri et al on the effects of Er:YAG laser, the amount of energy that is adequate for complete elimination of gram negative species, can only decrease the growth of gram positive species. 26 Therefore, despite the fact that 100 mJ energy is not adequate for complete elimination of E. faecalis from the root canal, it is possible that regarding the multi-bacterium nature of pulp disease, 7,55 this laser with the investigated parameters is suitable for disinfection of root canal from other bacteria. In addition to mechanical methods and new tools such as laser, chemical materials such as NaOCl are used for disinfecting the canal.…”

Section: Anti-bacterial Effect Of Er:yag Laser On Enterococcus Faecalismentioning

confidence: 99%

The Effect of Er:YAG Laser on Entroccocus faecalis Bacterium in the Pulpectomy of Anterior Primary Teeth

et al. 2017

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Introduction: Successful root canal therapy depends on the complete elimination of microorganisms such as Entroccocus faecalis, which is impossible to achieve with the traditional methods. Lasers are recently introduced as a new method to solve the problem. The present study is planned and performed to examining the antibacterial effect of Er: YAG laser. Methods: Sixty extracted anterior primary teeth were prepared and sterilized. E. faecalis bacterium was cultured in canals. Samples were randomly divided into two groups. The first group was disinfected by NaOCl 5/25% and Er: YAG laser and the second group just by NaOCl 5/25%. Samples of canal contents were cultured and colony counts were calculated. The results were analyzed statistically by SPSS software and Mann Whitney test. Results: There was no significant difference between colony counts in both groups (P = 0.142). But the number of colonies in the first group was lower than in the second group. Conclusion: Although, Er: YAG laser cannot completely eliminate E. faecalis bacterium, its simultaneous use with NaOCl decreases E. faecalis.

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A comparative study of the removal of smear layer by three endodontic irrigants and two types of laser

Cited by 199 publications

References 30 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

A eficácia da solução de EDTA na remoção de smear layer e sua relação com o tempo de uso: uma revisão integrativa

The Effect of Er:YAG Laser on Entroccocus faecalis Bacterium in the Pulpectomy of Anterior Primary Teeth

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