Ação de dois agentes clareadores sobre o esmalte dentário humano, quanto à variação de massa após escovação dental simulada

• Autor(a) principal: Bonato, Lucilei Lopes
• Data de Publicação: 2009
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/13946
• topic: Whitening teeth; Simulated brushing; Mass variation; Dental enamel; Dentes - Clareamento; Massa (Física); Escovação dentária; Clareamento dental; Escovação simulada; Variação de massa; Esmalte dentário; CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA

White teeth are more and more the aesthetic demand. The indication makes whitening teeth and the employed technique being of criterious use. Hydrogen peroxide and Carbamide peroxide are the whitening agents more used to vitalized teeth in different concentrations. There are two whitening teeth s techniques: in office and at home, whose indications should be based on patient s safety, concerning to the maintenance of the teeth s integrity, as well as oral and general health. The aim of this study is to bring results to allow the professional of Dentistry to indicate the best treatment in order to give safety, evaluating facilitation to wear and tear in humans' teeth, submitted in vitro to the two techniques and the two main whitening agents, Hydrogen peroxide, 35% (Whiteness HP MAXX - FGM) and Carbamide peroxide, 10% (Whiteness Perfect - FGM), respectively, and to a mechanical action of a simulated brushing essay. Both whitening teeth s treatments were accomplished by a technique recommended by the manufacturer. Simulated brushing was accomplished daily, 500 cycles, for 10 days. The specimens were divided in 5 groups (N=8), one control (without whitening teeth) and 4 experimental (one group received in office technique and the others received at home technique). It was still evaluated the waiting time in accomplishing the simulated brushing after the treatment at home (15, 30 and 60 minutes). The mass variation among the specimens was checked by initial and final weight (after and before the whitening teeth and the simulated brushing), in analytical scale and after the dehydration in silica gel of them. The statistical analysis (ANOVA Oneway and Student-Newman-Keuls) was accomplished and the results allowed concluding that: 1- It occurred loss of mass in the human teeth after they were submitted to both whitening treatments proposed, followed by simulated brushing essay, and on control group (without whitening teeth treatment); 2- Hydrogen peroxide 35% caused the smallest loss of mass in the enamel, after simulated brushing essay, with statistical difference; 3- There was no significant difference in the weight loss occurred with any waiting times proposed between the whitening teeth treatment with carbamide peroxide 16% and the simulated brushing essay, maybe this treatment caused the biggest loss of mass in enamel.