Bleaching of discoloured root‐filled teeth

Holmstrup, G; Palm, Anne Merete; H, Lambjerg-Hansen

doi:10.1111/j.1600-9657.1988.tb00322.x

Cited by 81 publications

(61 citation statements)

References 11 publications

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“…The success rate ranges from 93% to 100% with 1-to 6-year follow-ups, [1][2][3][4] although other studies have reported lower rates of 50% to 79% over 3 to 8 years. 5,6 Despite the obvious benefits of the ability of hydrogen peroxide-containing agents to eliminate stains by cleaving double bonds of pigmented molecules, negative effects on dentin at the morphological, 7 chemical, 8 and biomechanical 9 levels have been reported. The pH of the bleach formulation may play a critical role in these effects.…”

Section: Introductionmentioning

confidence: 99%

Effect of Sodium Ascorbate on Resin Bonding to Sodium Perborate–bleached Dentin

Yoon

Burrow

Wong

et al. 2014

Operative Dentistry

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Resin dentin bonding can be performed immediately after sodium perborate bleaching without the need for sodium ascorbate pretreatment; however, the two-step self-etching adhesive performed better than the all-in-one system. The all-in-one adhesive, Xeno IV, exhibited significantly lower microshear bond strength when bonded to positions associated with larger-diameter dentinal tubules. SUMMARYThis was an in vitro study to evaluate the effect of sodium ascorbate on the microshear bond strength (MSBS) of resin composite to sodium perborate-bleached dentin. Molar dentin sections were divided into six groups: 1) control, 2) sodium perborate (SP) bleach and immediate bonding, 3) SP and 30 second sodium ascorbate (SA); 4) SP and 1 minute SA; 5) SP and 2 minute SA; and 6) SP and 7 day delay before bonding. They were further divided into two-step self-etching (Clearfil SE Bond) or allin-one self-etching (Xeno IV) adhesive systems. Resin composite microtubes were bonded according to dentin location-center, pulp horn, and peripheral positions-and an MSBS test was carried out. Failure mode was determined using light microscopy and scanning electron microscopy. There were no significant differences between the treatment types/groups. MSBSs were significantly higher for two-step self-etching adhesive compared with all-in-one self-etching adhesive (p=0.028). For the all-inone adhesive, MSBSs at the center and pulp horn positions were significantly lower than the peripheral positions (p,0.001). All-in-one groups had significantly more adhesive failures than two-step adhesive groups (p=0.015). The odds of adhesive failure were higher at the pulp horn position than the peripheral position (p=0.004). Sodium perborate bleaching of dentin had no effect on MSBS or mode of failure for either two-step or all-in-one selfetching adhesives; therefore, the effect of sodium ascorbate was negligible. The two-step

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Section: Introductionmentioning

confidence: 99%

Effect of Sodium Ascorbate on Resin Bonding to Sodium Perborate–bleached Dentin

Yoon

Burrow

Wong

et al. 2014

Operative Dentistry

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“…Estes resultados vão ao encontro de outras pesquisas clínicas. Em estudos em que foi utilizado o vedamento cervical 1,3,21 , ou a associação de substâncias menos caústicas, como o perborato de só-dio mais água 17 , não foi encontrado nenhum caso de RCE.…”

Section: Discussionunclassified

Avaliação clínica de reabsorção radicular externa em dentes desvitalizados submetidos ao clareamento

Loguércio

Souza²,

Floor³

et al. 2002

Pesqui. Odontol. Bras.

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RESUMO:O propósito deste estudo foi avaliar a presença de reabsorção cervical externa em pacientes submetidos ao clareamento de dentes desvitalizados. Os pacientes avaliados tiveram pelo menos um dente desvitalizado clareado entre os anos de 1986 a 1996. Os pacientes foram submetidos à técnica de clareamento com perborato de sódio e peróxi-do de hidrogênio, de acordo com a técnica descrita por Busato et al. 5,6 . Dos 193 pacientes chamados para que os dentes clareados fossem examinados clínica e radiograficamente, apenas 43 pacientes compareceram (54 dentes) com uma média de tempo após o clareamento de 3,5 anos. Os resultados permitiram concluir que em nenhum dos dentes examinados foi possível observar indícios de reabsorção cervical externa. UNITERMOS: Reabsorção da raiz; Clareamento de dente; Peróxido de hidrogênio. ABSTRACT:The purpose of this study was to evaluate the presence of external resorption in non-vital teeth submitted to bleaching. The evaluated patients had at least one non-vital tooth, which had been bleached between 1986 and 1996. All teeth were submitted to bleaching with hydrogen peroxide and sodium perborate, as described by Busato et al. 5,6 . From 193 patients recalled for clinical and radiographic evaluation of bleached teeth, only 43 attended (54 teeth). The average time elapsed after bleaching was 3.5 years. The results revealed that none of the examined teeth had any degree of external cervical resorption. UNITERMS: Root resorption; Tooth bleaching; Hydrogen peroxide. INTRODUÇÃOO escurecimento dos dentes é motivo de grande preocupação por parte dos pacientes. Nesse contexto, o clareamento de dentes desvitalizados é uma terapia muito requisitada na prática diária do consultório 7 . A etiologia do escurecimento de dentes desvitalizados é bem conhecida. Essa mudança cromática pode ser ocasionada por uma hemorragia advinda de trauma, técnica terapêutica inadequada, espaço de tempo entre o traumatismo e o atendimento odontológico e tempo de permanência da restauração provisória, após o tratamento de canal 2,6 . Independentemente desses fatores causais, todo profissional deve estar bem preparado para diagnosticar corretamente a causa da alteração de cor, pois essa é uma condição indispensável para o sucesso do procedimento.A técnica de clareamento é um procedimento utilizado há muito tempo, e tem três vantagens indiscutíveis, como: evitar o desgaste de estrutura dentária em comparação com outros procedimentos, obter resultados estéticos satisfatórios comprovados em longo prazo e onerar menos o paciente 6 . Contudo, sabe-se também que há efeitos deleté-rios para os dentes e as estruturas de suporte 9 , sendo a reabsorção cervical externa (RCE) a mais grave descrita na literatura.Desde o relato de Harrington, Natkin 14 (1979), outras publicações têm sido realizadas buscando associar o clareamento de dentes aos problemas de RCE. Apesar desta associação não estar com-131 Endodontia

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“…However, there is a possibility of recurring discoloration, which means that the initial results cannot be considered permanent. Several authors have evaluated the incidence of color regression one to six years after internal bleaching and reported different percentages of darkening (8,11,12). While Holmstrup et al (12) and Brown (13) both reported a success rate of 75% or more after one to five years.…”

Section: Discussionmentioning

confidence: 99%

“…Several authors have evaluated the incidence of color regression one to six years after internal bleaching and reported different percentages of darkening (8,11,12). While Holmstrup et al (12) and Brown (13) both reported a success rate of 75% or more after one to five years. In the present case we found more than 90% success rate without change in the colour and with no pericapical changes in the tooth.…”

Section: Discussionmentioning

confidence: 99%

Management of tooth discoloration in non-vital endodontically treated tooth - A report of 6 year follow-up

Nagaveni¹,

Umashankara²,

Radhika³

et al. 2011

J Clin Exp Dent

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Discoloration of teeth, especially the anteriors, can result in considerably cosmetic impairment in young children. It is the pediatric dentist's responsibility to supervise those children who seek to undergo a whitening treatment to ensure the maximum cosmetic benefit within the boundaries of oral and systematic health. Among bleaching techniques, the walking bleach technique with sodium perborate and distilled water stands out because of its superior esthetic results with no side effects. This paper presents a case of tooth discoloration in non-vital tooth which was successfully bleached using walking bleach method. After 6 year follow up the prognosis was good with no reversal of tooth discoloration and absence of external cervical resorption.

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Bleaching of discoloured root‐filled teeth

Cited by 81 publications

References 11 publications

Effect of Sodium Ascorbate on Resin Bonding to Sodium Perborate–bleached Dentin

Effect of Sodium Ascorbate on Resin Bonding to Sodium Perborate–bleached Dentin

Avaliação clínica de reabsorção radicular externa em dentes desvitalizados submetidos ao clareamento

Management of tooth discoloration in non-vital endodontically treated tooth - A report of 6 year follow-up

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