Meneses ECE, Llamosas HE, Quintanar ZRE

Language: Spanish
References: 12
Page: 146-150
PDF size: 147.09 Kb.

ABSTRACT

Given the ever increasing use of bleaching agents in dental clinics and by consumers in their homes, it is very important to understand the possible effects of these substances on tooth enamel; therefore, the aim of this study is to describe the morphological and chemical changes in surface enamel induced by bleaching agents, in this case those caused through using the Opalescence Boost system (hydrogen peroxide 38%) produced by the company Ultradent. Samples were observed using a scanning electron microscope, which revealed the enamel surface to which the chemical was not applied to be uniform, with enamel prisms being clearly differentiated. Where the enamel surface was subjected to the bleaching process, a significant change was visible, with the enamel prisms being clearly evident due to the loss of interprismatic substance; other teeth have craters and depressions that are a sign of deeper enamel demineralization. Furthermore, the percentage of content in the most important inorganic elements of the enamel was obtained, before and after the teeth were subjected to the bleaching procedure; a significant difference was found in the presence of phosphorus, calcium, oxygen, and carbon. Our conclusion is that the whitening materials used in dental clinics may affect tooth enamel and should therefore be used with caution.

REFERENCES

1. Romero J. Los patrones de la mutilación dental prehispánica. México: INHA; 1952.

2. Carreño Hernández M. Historia del blanqueamiento dental. [Internet] [consultada 10 de abril 2012]. Disponile en: www.blanqueamientodental.com

3. Hegedüs C. An atomic force microscopy study on the effect of bleaching agents on enamel surface. J Dent. 1999; 27 (7): 509-515.

4. Haywood VB. Nightguard vital bleaching: effects on enamel surface texture and diffusion. Quintessence Int. 1990; 21 (10): 801-804.

5. Ernst CP. Effects of hydrogen peroxide-containing bleaching agents on the morphology of human enamel. Quintessence Int. 1996; 27 (1): 53-56.

6. Covington JS. Carbamide peroxide tooth bleaching: effects on enamel composition and topography. J Dent Res. 1990; 69: 175.

7. Shannon H. Characterization of enamel exposed to 10% carbamide peroxide bleaching agents. Quintessence Int. 1993; 24 (1): 39-44.

8. Lopes GC. Effect of bleaching agents on the hardness and morphology of enamel. J Esthet Restor Det. 2002; 14 (1): 24-30.

9. Baptista MC, Pagani C, Benetti AR, Matuda F. Evaluation of the bleached human enamel by scanning electron microscopy. J Appl Oral Sci. 2005; 13 (2): 204-211.

10. Bitter NC. A scanning electron microscope study of the long-term effect of bleaching agents on the enamel surface in vivo. Gen Dent. 1998; 46 (1): 84-88.

11. Perdigão J. Ultra-morphological study of the interaction of dental adhesives with carbamide peroxide-bleached enamel. Am J Dent. 1998; 11 (6): 291-301.

12. Rotstein I. Histochemical analysis of dental hard tissues following bleaching. J Endodontics. 1996; 22 (1): 23-25.