Diogo Oliveira Martins has completed his Master degree at the age of 23 years (7/2014) from Dentistry Faculty of Oporto University.
Objective: A literature review to determine the state of the art with regard to antimicrobial ability of adhesive systems
\r\n\r\nMaterials and methods: For this work was performed a literature research for the last 10 years, in Portuguese and English languages, at the research engines: \"Pubmed\" and \"B-on\".
\r\n\r\nDevelopment: The progressive decrease in bond strength occurs due to degradation, hydrolytic and enzymatic, of the hybrid layer. The chlorhexidine is a biguanide with cationic properties. It is a stable, broad spectrum antibacterial molecule at high concentrations and bacteriostatic at low concentrations. Besides its antimicrobial properties, chlorhexidine is a potent inhibitor of MMPs. DMAE-CB is, as MDPB, a monomer composed by combining a methacrylate group, polymerizable, with a quaternary ammonium group, responsible for the antibacterial properties. Those antibacterial monomers have the same principle: Before polymerizing is bactericidal and after polymerization have a bacteriostatic effect by contact.
\r\n\r\nConclusions: Chlorhexidine is able to inhibit bacterial activity in dental treatments. With the advantage of not interfering or even improve the mechanical properties of the interface dentin/adhesive, such as higher microtensile bond strength and lower nanoleakage. Despite the positive results these statements are not completly consensual. The antibacterial monomers MDPB and DMAE-CB are shown to have an important role in the antimicrobial ability of adhesive systems because it maintains this property even after polymerization. Apart from its proven antimicrobial activity, all incorporated agents: Chlorhexidine, MDPB and DMEA-CB; have shown ability to inhibit MMPs.\r\n
Kevin Lopes Oliveira has completed his Master in dentistry from Faculdade de Medicina Dentária da Universidade do Porto. He is a collaborator at Occlusion Department of Faculdade de Medicina Dentária da Universidade do Porto.
Introduction: Male patient, 29 years old and with poor oral hygiene, went to UCMDC in FMDUP for the replacement of Class II MOD amalgam restoration on tooth 46 for aesthetic reasons. Radiographically it could be observed radiolucent image of the tooth tissue and restoration, suggesting the presence of a recurrent carious lesion. Through the pulp susceptibility testing is classified as a reversible injury, and it was therefore chosen a conservative treatment.
\r\n\r\nDiscussion: The current dental restorative materials used in the reconstruction are not only intended to restore form and function, but also long-term aesthetics. When there is a large loss of tooth structure, Inlay and Onlay\'s\'s are widely used in the reconstruction of the tooth and these can be of three types: metal alloys, composites or ceramics. We chose to use a resin inlay: as compared to metal inlays have aesthetic results arguably superior, and compared to ceramic inlays, have a lower price. Since compared to the direct composite restorations have advantages such as greater resistance to wear, better marginal fit, less polymerization shrinkage, greater ease of obtaining proximal contact points due to be performed in extra-oral environment, greater longevity and beyond repair, adjustment and intra-oral polishing.
\r\n\r\nConclusions: Composite resin indirect restorations are an alternative treatment with a high performance clinical long-term, allowing to the clinician an improve of functional and aesthetic qualities, with a shorter chair time.\r\n