Effect of bleaching agents on inorganic components of human dentin and cementum
| Autor: | Itzhak Gedalia, Zachi Lehr, Ilan Rotstein |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Materials science
Dentistry chemistry.chemical_compound stomatognathic system Borates Tooth Bleaching Human dentin medicine Dentin Humans Cementum Solubility Inorganic composition Hydrogen peroxide General Dentistry Dissolution Dental Cementum business.industry Hydrogen Peroxide stomatognathic diseases medicine.anatomical_structure chemistry Sodium perborate business Nuclear chemistry |
| Zdroj: | Journal of Endodontics. 18:290-293 |
| ISSN: | 0099-2399 |
| DOI: | 10.1016/s0099-2399(06)80956-8 |
| Popis: | The effect of bleaching agents on the inorganic composition of human dentin and cementum was examined. Intact teeth were crushed, pulverized, and separated to dentin and cementum powders. The pulverized tissues were exposed to treatments with 30% H 2 O 2 , 3% H 2 O 2 , 2% sodium perborate in 30% H 2 O 2 , 2% sodium perborate in 3% H 2 O 2 , and 2% sodium perborate in bidistilled water for periods of 15 min and 1, 24, and 72 h. The degree of dissolution and the percentage of inorganic material for both dentin and cementum were measured. Thirty percent H 2 O 2 and 2% sodium perborate in 30% H 2 O 2 treatments significantly increased the solubility of dentin and cementum. The degree of dissolutions and the percentage of inorganic material remaining in the undissolved dentin and cementum increased with time progression. The greatest increase occurred with 30% H 2 O 2 and 2% sodium perborate in 30% H 2 O 2 after 24- and 72-h treatments. It is concluded that 30% hydrogen peroxide treatment may cause alteration in the chemical structure of the dentin and cementum making them more susceptible to degradation. |
| Databáze: | OpenAIRE |
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