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Bleaching Agents

Bleach Ingestion


Presentation

  • At a pH between 5 and 8.5, HOCl is the major specie present so very rapid bleaching takes place. However, rapid degradation of the fiber also takes place. 3.[slideshare.net]
  • Our business intelligence and industry research reports offer clients with penetrative insights and actionable market data specially designed and presented to aid strategic decision making.[globenewswire.com]
  • A reduction in sulfur, a marker of proteoglycans present in the matrix of dental hard tissues, might indicate damage of the organic component of the matrix.[ncbi.nlm.nih.gov]
Weakness
  • Mechanism Hydrogen peroxide is a weak acid and ionizes in water to form a hydrogen ion and a perhydroxyl ion. The perhydroxyl ion is the active bleaching agent. 16. B. Effect of pH Hydrogen peroxide is an extremely weak acid, Ka 1.5 X 1012.[slideshare.net]
Fever
  • The spent peroxide baths still contain residuals of hydrogen peroxide which fever the degradation of the organic impurities in the effluent, and this helps to decrease the chemical oxygen demand (COD). Advantages of Peroxide Bleaching: 23.[slideshare.net]
Periodontitis
  • […] been associated with the use of highly concentrated hydrogen peroxide.[ 28, 29 ] It was considered that, during bleaching, hydrogen peroxide diffused through the radicular dentin, particularly in the presence of cementum defects, to the surrounding periodontal[ncbi.nlm.nih.gov]
Irritability
  • Extensive product use may result into several health issues such as skin irritation, eye problems and respiratory issues.[globenewswire.com]
  • […] peroxide; potassium metabisulfite; sodium chlorate; sodium chlorite; sodium hypochlorite; sodium peroxide; sodium perborate; sodium bisulfite; sodium borohydride; peracetic acid Hazards and Safety Most bleaches are toxic by ingestion and will cause irritation[cameo.mfa.org]
  • Pulpal irritation, changes in the tooth structure, microleakage of restorations, reduced bond strength of composite restorations, external root resorption, and other alterations were associated with these agents.[ 3 – 7 ] Some researches have also shown[ncbi.nlm.nih.gov]
  • The material is an irritant to the skin and mucous membranes and dangerous to the eyes 15. Hydrogen peroxide can also decompose. This reaction is catalyzed by metal ions e.g. Cu , Fe .[slideshare.net]

Treatment

  • Therefore, government in the region is making substantial investments for building water treatment facilities to restore availability of clean water.[globenewswire.com]
  • No separate pre treatment is necessary because hot, alkaline bleaching has not only a bleaching but also a cleaning effect, it therefore combines the advantages of an alkaline extraction with the bleaching treatment. 5.[slideshare.net]
  • […] patent dentinal tubules.[ 30 ] To avoid such a result, many researchers proposed that the use of hydrogen peroxide for intracoronal bleaching purpose should be avoided and protection of cervical and periodontal tissues must be emphasized in bleaching treatments[ncbi.nlm.nih.gov]

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