1994
DOI: 10.1016/s0099-2399(06)81181-7
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Effect of hydrogen peroxide and sodium perborate on the microhardness of human enamel and dentin

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Cited by 160 publications
(129 citation statements)
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“…37 In vitro studies using extracted teeth showed that hydrogen peroxide placed in the pulp chamber penetrated the dentine, 38 that heat increased the penetration 39 and that the penetration is greater in teeth with cervical cemental defects. 40 Intracoronal bleaching with 30% hydrogen peroxide reduces the microhardness of dentine and enamel 41 and mechanically weakens the dentine. 42 Increased sensitivity after external (vital) tooth bleaching Vital tooth bleaching can be performed by 1. dentist-administered bleachingthe use of a high concentration of hydrogen peroxide (35-50%) or carbamide peroxide (35-40%), often supplemented with a heat source; 2. dentist-supervised bleaching -using a bleaching tray containing a high concentration of carbamide peroxide (35-40%) placed in the patient's mouth for 30 minutes to two hours in the dental office; 3. dentist-provided bleaching -known as 'at home' or 'nightguard' bleaching and administered by the patient applying 5-22% solution of carbamide peroxide in a custom-made tray; and 4. over-thecounter products, often based on carbamide peroxide or H 2 O 2 of various concentrations and placed in a prefabricated tray or on strips, and adjusted by the user.…”
Section: Opinionmentioning
confidence: 99%
“…37 In vitro studies using extracted teeth showed that hydrogen peroxide placed in the pulp chamber penetrated the dentine, 38 that heat increased the penetration 39 and that the penetration is greater in teeth with cervical cemental defects. 40 Intracoronal bleaching with 30% hydrogen peroxide reduces the microhardness of dentine and enamel 41 and mechanically weakens the dentine. 42 Increased sensitivity after external (vital) tooth bleaching Vital tooth bleaching can be performed by 1. dentist-administered bleachingthe use of a high concentration of hydrogen peroxide (35-50%) or carbamide peroxide (35-40%), often supplemented with a heat source; 2. dentist-supervised bleaching -using a bleaching tray containing a high concentration of carbamide peroxide (35-40%) placed in the patient's mouth for 30 minutes to two hours in the dental office; 3. dentist-provided bleaching -known as 'at home' or 'nightguard' bleaching and administered by the patient applying 5-22% solution of carbamide peroxide in a custom-made tray; and 4. over-thecounter products, often based on carbamide peroxide or H 2 O 2 of various concentrations and placed in a prefabricated tray or on strips, and adjusted by the user.…”
Section: Opinionmentioning
confidence: 99%
“…Durante este periodo debe esta- bilizarse y se puede colocar un apósito de hidróxido de calcio con el fin de alcalinizar el pH y así evitar una reabsorción cervical de la raíz que es una complicación frecuente después de blanqueamientos. 8,9,14,16,28,31,33,[37][38][39][40] Técnica termo-catalítica: involucra la colocación de peróxido de carbamida del 30% al 35% en la cá-mara pulpar desbridada donde el calentamiento de este se realiza mediante un reóstato controlado, una lámpara de fotocurado o mediante un instrumento metálico calentado como un bruñidor estéril. 41 Se repite dos veces o más por un número de sesiones hasta el resultado estético deseado.…”
Section: Blanqueamiento Interno En Dientes No Vitalesunclassified
“…Ito et al 18 28 claimed that hydrogen peroxide might reduce the hardness of enamel and dentine. However, their study was flawed because they used H 2 O 2 at pH3.…”
Section: Does Exposure To Carbamide Peroxide Increase Resorption?mentioning
confidence: 99%