![]() ![]() Nanotechnology Fluorides Dental Enamel Tooth Demineralizationĭental caries is the most prevalent disease of the oral cavity. Nanosilver fluoride showed the best effect against caries compared to conventional fluoride treatments. The decay curves obtained from NaF and nanosilver fluoride groups showed similar behavior, while the negative group showed lower extinction coefficient. In T1 it is not possible to visualize the dentin-enamel junction, probably due to the higher back scattering of the demineralized enamel, which does not allow light to reach the dentin. Results:Īfter analyzing the exponential decay of A-scans from each group, it was possible to identify differences in light propagation among samples. The integrity of the enamel surface and the measurement of the volume loss for the tissue after pH cycling in comparison to initial images were obtained from optical coherence tomography images. Optical coherence tomography images were acquired at three different moments: initial stage (T0), post caries formation (T1), and post pH cycling (T2). Material and Methods:Īll samples were submitted to demineralization process by pH cycling during 14 days and randomly distributed into three groups (n = 11): Nanosilver Fluoride (NSF), Sodium fluoride (NaF), and negative control. ![]() To evaluate the use of nanosilver fluoride in the enamel remineralization process through optical coherence tomography. Graduate Program in Dentistry, State University of Pernambuco, Camaragibe, PE, Brazil. Andréa Gadelha Ribeiro Targinoĭepartment of Dentistry, Federal University of Paraíba, João Pessoa, PB, Brazil. Anderson Stevens Leônidas Gomesĭepartment of Physics, Federal University of Pernambuco, Recife, PE, Brazil. School of Dentistry, Federal University of Pernambuco, Recife, PE, Brazil. Emery Cleiton Cabral Correia Linsĭepartment of Biomedical Engineering, Federal University of Pernambuco, Recife, PE, Brazil. Claudia Cristina Brainer de Oliveira Motaįaculty of Dentistry, Center University Tabosa de Almeida, Caruaru, PE, Brazil. General Newton Cavalcanti, 1650, Tabatinga, Camaragibe, PE, Brazil. In another passage of his speech, and after paying tribute to the 200,000 Chinese soldiers who perished in the Korean War, the maximum leader of Beijing, and the one accumulating the greatest power since Mao Zedong, demanded a greater acceleration in the modernization of the Chinese Armed Forces, from the Army to the new space warfare units.Author to whom correspondence should be addressed: Joás de Araújo Teixeira, Av. ![]() This speech by Xi Jinping is the most markedly warlike since he took power, an undeniable symptom that the tensions with his great rival, the United States, have not only not diminished but are in danger of escalating. In this warning he included Taiwan once again, as an indivisible part of that homeland, launching a thinly veiled threat to those inside and outside the prosperous island who advocate a fully internationally recognized independence. In front of an audience of veterans in that war, leaders of the Chinese Communist Party (CCP) and the highest-ranking military officers of the Armed Forces, Xi Jinping promised that "we will never allow any force to invade or divide the sacred territory of the motherland". It was an occasion to mark territory, especially against the United States, with whom the current commercial warfare and geopolitical influence are preluding a much hotter confrontation. This was the focus of Chinese President Xi Jinping's speech in the vast Beijing's Great Hall of the People to commemorate the 70th anniversary of China's entry into the Korean War (1950-1953). Any country or any army, no matter how powerful they used to be, standing against the trend of the international community and acting perversely. "The Chinese people will not create trouble but nor are we afraid, and no matter the difficulties or challenges that we face, our legs will not shake and our backs will not bend. ![]()
0 Comments
Leave a Reply. |