Reanatomização dental com resina composta: relato de caso clínico

A agenesia dentária, particularmente a dos incisivos laterais superiores (ILS), é uma anomalia dentária relativamente comum. Quando há indicação ortodôntica para que os caninos ocupem o lugar dos ILS, também há a necessidade de adequação estética e funcional do caso. Desta forma, o objetivo deste trabalho é apresentar um caso de reanatomização de dentes de um paciente com agenesia de ILS após reposicionamento dental ortodôntico. Durante o exame clínico de um paciente, gênero masculino, 25 anos de idade foi constatada agenesia bilateral dos incisivos laterais superiores e necessidade de tratamento interdisciplinar. Inicialmente o paciente foi submetido a cirurgia periodontal com aumento de coroa clínica e após cicatrização cirúrgica foi realizado o clareamento pela técnica combinada, onde associa-se o clareamento em consultório com o caseiro. Após 15 dias do término do clareamento e plastia dos dentes 13 e 23 a reanatomização dos elementos 11, 13, 14, 15, 21, 23, 24 e 25 foi realizada com resina composta Empress Direct (Ivoclar Vivadent). O caso apresentado mostrou uma resolução estética onde a finalização envolveu restaurações em resina composta, atendendo as necessidades estéticas do paciente. Conclui-se que a reanatomização dental, onde os caninos assumem o lugar dos incisivos laterais e os pré-molares dos caninos, pode ser feita com sucesso desde que haja condições favoráveis com relação as dimensões dentais.  Palavras-chave: Anatomia. Resina. Dente

First measurement of the BSB_S meson mass

If simplified, every information retrieval problem can be solved when the information need implied by its expression has been identified. We are interested in the criteria used in realising a good information retrieval problem expression. We have listed these criteria through some principles and maxims which first characterized the communication between two persons are applied. We choose to use the gricean maxims because they are the most favoured for this type of situation. Secondly, we have tried to identify some others principles that can be used to realise a good information retrieval problem expression. The principles by Grice can not resolve all forms of error associated with this particular form of communication. In our work, we defined three other principles namely: adhesion principle, reformulation principle, memorization principle. We give some examples of situations where the principles we have formulated are not applicable and the consequences. We present the possible applications of our new model: MIRABEL, which can help in the description of information retrieval problem from. It also compels its user to use essential good expression principle implicitly

Bone regeneration in surgically created defects filled with autogenous bone: an epifluorescence microscopy analysis in rats

Although the search for the ideal bone substitute has been the focus of a large number of studies, autogenous bone is still the gold standard for the filling of defects caused by pathologies and traumas, and mainly, for alveolar ridge reconstruction, allowing the titanium implants installation. OBJECTIVES: The aim of this study was to evaluate the dynamics of autogenous bone graft incorporation process to surgically created defects in rat calvaria, using epifluorescence microscopy. MATERIAL AND METHODS: Five adult male rats weighing 200-300 g were used. The animals received two 5-mm-diameter bone defects bilaterally in each parietal bone with a trephine bur under general anesthesia. Two groups of defects were formed: a control group (n=5), in which the defects were filled with blood clot, and a graft group (n=5), in which the defects were filled with autogenous bone block, removed from the contralateral defect. The fluorochromes calcein and alizarin were applied at the 7th and 30th postoperative days, respectively. The animals were killed at 35 days. RESULTS: The mineralization process was more intense in the graft group (32.09%) and occurred mainly between 7 and 30 days, the period labeled by calcein (24.66%). CONCLUSIONS: The fluorochromes showed to be appropriate to label mineralization areas. The interfacial areas between fluorochrome labels are important sources of information about the bone regeneration dynamics

Anomalous extreme rainfall variability over Europe ― Interaction between climate variability and climate change

status: publishe

The EUMAC zooming model, a tool supporting environmental policy decisions in the local-to-regional scale

Air pollution model systems may be used for the optimization of air pollution abatement strategies and for short-term predictions of smog episodes in highly polluted areas. One of the contemporary air pollution model systems is the EUMAC Zooming Model (EZM) which is best suited for air quality studies at the local-to-regional scale. As examples for such studies, results are presented from the application of the EZM to the Basel area, to the Attica peninsula, to the Upper Rhine valley and to the Heilbronn area during the 'Ozone Experiment'. (orig.)SIGLEAvailable from TIB Hannover: DtF QN1(47,13) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman