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| 1 | Enamel microabrasion: An overview of clinical and scientific considerations显示文摘Superficial stains and irregularities of the enamelare generally what prompt patients to seek dental intervention to improve their smile. These stains or defects may be due to hypoplasia, amelogenesis imperfecta, mineralized white spots, or fluorosis, for which enamel microabrasion is primarily indicated. Enamel microabrasion involves the use of acidic and abrasive agents, such as with 37% phosphoric acid and pumice or 6% hydrochloric acid and silica, applied to the altered enamel surface with mechanical pressure from a rubber cup coupled to a rotatory mandrel of a lowrotation micromotor. If necessary, this treatment can be safely combined with bleaching for better esthetic results. Recent studies show that microabrasion is a conservative treatment when the enamel wear is minimal and clinically imperceptible. The most important factor contributing to the success of enamel microabrasion is the depth of the defect, as deeper, opaque stains, such as those resulting from hypoplasia, cannot be resolved with microabrasion, and require a restorative approach. Surface enamel alterations that result from microabrasion, such as roughness and microhardness, are easily restored by saliva. Clinical studies support the efficacy and longevity of this safe and minimally invasive treatment. The present article presents the clinical and scientific aspects concerning the microabrasion technique, and discusses the indications for and effects of the treatment, including recent works describing microscopic and clinical evaluations. | Núbia Inocencya Pavesi Pini Daniel Sundfeld-Neto Flavio Henrique Baggio Aguiar Renato Herman Sundfeld Luis Roberto Marcondes Martins José Roberto Lovadino Débora Alves Nunes Leite Lima | 2015 | World Journal of Clinical Cases2015，3，1： | 6 |
| 2 | Pentoxifylline 通过 TNF- 合成和 TGF-1 基因表示的下面规定改进肝新生显示文摘 AIM:To investigate the mechanism of pentoxifylline(PTX)improvement in liver regeneration.RESULTS:Rats were randomized into 4 groups:Control rats;Sham-sham-operation rats;Saline-70% hepatectomy plus saline solution;PTX-70%hepatectomy plus PTX.At 2 and 6 h after hepatectomy,aspartate aminotransferase,alanine aminotransferase,tumor necrosis factor(TNF)-α and interleukin-6(IL-6)serum and hepatic tissue levels were determined.Tumor growth factor(TGF)-β1 gene expression in liver tissue was evaluated 24 h after hepatectomy by quantitative reverse transcriptase polymerase chain reaction analysis.Proliferation was analyzed by mitotic index and proliferating cell nuclear antigen(PCNA)staining 48 h after hepatectomy.RESULTS:TNF-α and IL-6 serum levels increased at 2 and 6 h after hepatectomy.At 2 h after hepatectomy serum PTX was reduced but not hepatic levels of TNF-α and IL-6.A decrease in liver TGF-β1 gene expression and an increase in mitotic index and PCNA after hepatectomy were observed in the PTX treatment group in comparison to the saline group.CONCLUSION:PTX improves liver regeneration by a mechanism related to down regulation of TNF-α production and TGF-β1 gene expression. | Rodrigo Bronze Martino Ana Maria Mendona Coelho Márcia Saldanha Kubrusly Regina Leito Sandra Nassa Sampietre Marcel Cerqueira Cesar Machado Telesforo Bacchella Luiz Augusto Carneiro D’Albuquerque | 2012 | World Journal of Gastrointestinal Surgery2012，4，6： | 2 |
| 3 | Laboratory evaluation of recycled construction and demolition waste for pavements显示文摘 | Leite F D Motta R S Kamilla L V | 2011 | Construction and Building Materials2011，25，6： | 1 |
| 4 | Probabilistic load flow by a multi-linear simulation algorithm显示文摘 | LEITE D A SILVA A M ARIENTI V L | 1990 | IEE Proc on Generation Transmission and Distribution1990，137，4： | 1 |
| 5 | Performance of anaerobic reactors in the biostabilization of organic solid wastes显示文摘 | Lopes W S Leite V D Prasad S | 2003 | Journal of Solid Waste Technology and Management2003，29，2： | 1 |
| 6 | Brown pigment of the nanopowder spinel ferrite prepared by combustion reaction显示文摘 | COSTA A C F M LEITE A M D FERREIRA H S | | 0，，： | 1 |
| 7 | Antineoplastic activity of selected constituents of Duguetia glabriuscula 显示文摘 | Matos M F Leite L I Brustolim D | 2006 | Fitoterapia2006，77，3： | 1 |
| 8 | Probabilistic load flow considering dependence between input nodal powers显示文摘 | Leite D S Arienti V L Allan RN | 1984 | IEEE Transactions on Power Apparatus and Systems1984，103，6： | 1 |
| 9 | Homogeneous three-cell networks显示文摘 | LEITE M D C A GOLUBITSKY M | 2006 | Nonlinearity2006，19，： | 1 |
| 10 | Influence of inoculum on performance of anaerobic reactors for treating municipal solid waste显示文摘 | Lopes W S Leite V D Prasad S | 2004 | Bioresource Technology2004，94，： | 1 |
| 11 | Complexities of patho- genesis of Mannheimia haemolytica and Haemophilus somnus infections: Challenges and potential opportunities for prevention? 显示文摘 | Czuprynski D J Leite F Sylte M | 2004 | Anim HealthRes Rev2004，5，2： | 1 |
| 12 | Synthesis of aryl-hydrazones via ultrasound irradiation in queous medium 显示文摘 | LEITE A C L MORWIRA D R M COELHO L C D | 2008 | Tetrahedron Letters2008，49，： | 1 |
| 13 | Expressed sequence markers for genetic analysis of bulb oion显示文摘 | McCallum J Leite D | 2001 | Theoretical and Applied Genetics2001，103，： | 1 |
| 14 | An improved LMI condition for robust D-stability of uncertain polytopic systems 显示文摘 | LEITE V J S PERES P L D | 2003 | IEEE Trans Automat Control2003，48，3： | 1 |
| 15 | Prevalence and risk factors associated with wheezing in the first year of life 显示文摘 | Bessa OA Leite A J Sole D | 2014 | J Pediatr (Rio J)2014，90，2： | 1 |
| 16 | Probabilistic wind farms generation model for reliability studies applied to brazilian sites显示文摘 | Leite A P Borges C L T Falcao D M | 2006 | IEEE Trans on Power Systems2006，21，4： | 1 |
| 17 | Nonlinear behavior of TiO2 - Ta2O5 - MnO2 material doped with BaO and Bi2O3 显示文摘 | Bomio M R D Sousa V C Leite E R | 2004 | Mater Chem Phys2004，85，： | 1 |
| 18 | Preparation and characterization of ethanol-treated silk fibroin dense membranes for biomaterials application using waste silk fibers as raw material显示文摘 | NOGUEIRA G M RODAS A C D LEITE C A P | 2010 | Bio-Resource Technology2010，101，21： | 1 |
| 19 | Evolving fuzzy granularmodeling from non-stationary fuzzy data streams显示文摘 | Leite D Ballini R Costa P | 2012 | Evolving Systems2012，3，1： | 1 |
| 20 | Supercapacitor electrodes obtained by directly bonding 2D MoS2 on reduced graphene oxide显示文摘 | Firmiano E G D S Rabelo A C Leite E R | 2014 | Adv Energy Mater2014，4，13： | 1 |
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