The association of external cervical resorption with modern internal bleaching protocols: what is the current evidence?

Newton, Richard; Hayes, J

doi:10.1038/s41415-020-1317-0

Cited by 15 publications

(12 citation statements)

References 33 publications

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“…Outros estudos 1,8,10,30 também mostraram um bom desempenho do óxido de zinco sem eugenol quando utilizado para propiciar o vedamento como tampão cervical devido a lisura de sua pasta, melhor consistência para trabalho e, principalmente, a expansão higroscópica que esse material sofre, de 60%, após o término de sua presa. A facilidade da técnica de aplicação deste material pode ser outro fator que favoreça sua utilização como tampão, além do custo benefício quando comparado com os outros materiais.…”

Section: Discussionunclassified

“…A reabsorção cervical externa é uma das principais preocupações clínicas na realização do clareamento interno, pois pode levar inevitavelmente a perda do elemento dental3. Ainda assim, a técnica de clareamento interno é considerada um tratamento conservador, desta forma o uso da técnica e material correto para o tampão cervical e agente clareador são fundamentais para minimizar os riscos 3,30 .…”

Section: Discussionunclassified

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Avaliação do cimento resinoso autoadesivo como tampão cervical para clareamento interno

et al. 2022

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Objetivo: Avaliar capacidade seladora de um cimento resinoso autoadesivo como tampão cervical para clareamento interno. Métodos: Quarenta incisivos inferiores bovinos recém-extraídos foram tratados endodonticamente. Após 72 horas, foi realizada a desobturação parcial do canal radicular para confecção de tampão cervical dividido em quatro grupos aleatório (n = 40), cada um contento dez amostras (n = 10), com os seguintes materiais: cimento resinoso autoadesivo, cimento resinoso adesivo, cimento de óxido de zinco sem eugenol com presa por água e cimento de ionômero de vidro quimicamente ativado (grupo controle). Após 24 horas de presa dos materiais, os elementos dentais foram submetidos ao clareamento interno com perborato de sódio misturado com água destilada pelo período de 7 dias em câmara umidificadora a 37 ºC. Posteriormente, o material clareador foi removido e um corante (fucsina básica 0,5%) foi colocado no interior da câmara pulpar, sendo renovado de 8 em 8 horas, pelo período de 24 horas. Os elementos dentais foram seccionados no sentido longitudinal em máquina de corte para avaliação quantitativa em um microscópio óptico sob aumento de 20x. O grau de penetração do corante foi analisado ao longo do tampão cervical (topo até base). Resultados: Não houve diferença significativa entre os materiais tamponantes utilizados (p = 0,5997). Conclusão: O cimento resinoso autoadesivo apresentou baixo grau de infiltração, sendo uma opção de material alternativo com finalidade de tampão cervical.

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Section: Discussionunclassified

Avaliação do cimento resinoso autoadesivo como tampão cervical para clareamento interno

et al. 2022

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“…The risk of external cervical resorption using modern bleaching procedures is likely to be lower than prior studies that used heat and higher concentrations of hydrogen peroxide (Newton & Hayes, 2020). Bleaching of root filled teeth with the walking bleach technique is considered a safe protocol with a low risk of invasive cervical resorption (Dahl et al 2019;Newton & Hayes, 2020;Setzer, 2020).…”

Section: External Cervical Root Resorptionmentioning

confidence: 99%

“…However, Heithersay ( 2004 ) argued that invasive cervical resorption was not activated by sulcular microorganisms and suggested the aetiology may involve a type of benign proliferative fibrovascular or fibro‐osseous disorder in which microorganisms have no pathogenic role but may become secondary invaders. It is thought that hydrogen peroxide compounds and free radicals must reach the periodontal tissues through the dentinal tubules and defects in cementum (Newton & Hayes, 2020 ; Wang & Hume, 1988 ). Significant increases in the levels of bone resorption markers RANK‐L and IL‐I ß were found in gingival crevicular fluid of teeth treated with walking bleach where the bleaching agent was 35% hydrogen peroxide or 37% carbamide peroxide (Bersezio et al, 2018b ).…”

Section: Complications and Risksmentioning

confidence: 99%

“…There is a concern that the directive may place dentists and patients at risk of choosing more invasive and expensive procedures. Dental bleaching has been shown to be a safe and effective means of lighten the colour of teeth and the risks of external cervical resorption with modern internal bleaching protocols involving lower concentrations of hydrogen peroxide agents may be lower than earlier studies (Newton & Hayes, 2020 ). Nonvital bleaching provides predictable and conservative lightening of teeth when compared to prosthodontic alternative treatment options.…”

Section: The European Union and The Lawmentioning

confidence: 99%

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Present status and future directions – Managing discoloured teeth

Kahler

2022

Int Endodontic J

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Managing tooth discolouration involves a range of different protocols for clinicians and patients in order to achieve an aesthetic result. There is an increasing public awareness in the appearance of their teeth and management of tooth discolouration may be inter‐disciplinary and involve both vital and nonvital teeth. Vital teeth can be easily treated with low concentration hydrogen peroxide products safely and effectively using an external approach and trays. For endodontically treated teeth, the walking bleach technique with hydrogen releasing peroxide products is popular. However, there is an association with external cervical root resorption with higher concentrations of hydrogen peroxide of 30%–35%. There are also regulatory considerations for the use of hydrogen peroxide in certain jurisdictions internationally. Prosthodontic treatments are more invasive and involve loss of tooth structure as well as a life cycle of further treatment in the future. This narrative review is based on searches on PubMed and the Cochrane library. Bleaching endodontically treated teeth can be considered a safe and effective protocol in the management of discoloured teeth. However, the association between bleaching and resorption remains unclear although there is likely to be a relation to prior trauma. It is prudent to avoid thermocatalytic approaches and to use a base/sealer to cover the root filling. An awareness expectations of patients and multidisciplinary treatment considerations is important in achieving the aesthetic result for the patient. It is likely that there will be an increasing demand for aesthetic whitening treatments. Bleaching of teeth has also become increasingly regulated although there are international differences in the use and concentration of bleaching agents.

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