Effects of Bleaching Gels on Dental Enamel Crystallography.
Oral Health Prev Dent
; 19(1): 7-14, 2021.
Article
em En
| MEDLINE
| ID: mdl-33491373
ABSTRACT
PURPOSE:
The aim of the present research was to analyse the effects of two bleaching agents, on the enamel crystallography by means of X-ray diffraction. MATERIAL ANDMETHODS:
Twelve human sound posterior teeth, were collected for the present study (nâ¯=â¯12) and from each tooth two enamel slabs were obtained and randomly assigned to one of two different bleaching protocols. The first protocol involved an in-office bleaching agent (hydrogen peroxide 37.5%/ SDI Polaoffice+), and the second an at-home whitening product (carbamide peroxide 16%/ PHILIPS Zoom! NiteWhite). X-ray diffraction readings were made before and after applying the treatments in order to analyse the peak intensity and crystal domain size. Additionally, scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX) were carried out to identify the composition correctly. Statistical analysis included repeated measures analysis of variance (pâ¯≤â¯0.05).Results:
Peak intensity in spectra obtained by X-ray diffraction had a tendency to diminish, mostly in the at-home bleaching group. The analysed data approximate a decrease in the crystal domain size among the samples treated for longer periods of time. Statistical analysis depicted no statistically significant differences among the experimental groups (pâ¯≥â¯0.05).Conclusions:
Crystal domain size had a tendency to decrease, mostly when the enamel was treated by bleaching gels that had to be applied by prolonged periods of time.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Clareamento Dental
/
Clareadores Dentários
Tipo de estudo:
Guideline
Limite:
Humans
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article