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Introduction: the dental traumatisms are events that frequently happen. The data gathered by the statistics, reveal significant figures as for the incidence and prevalence of these accidents, therefore you has ended up considering as a problem of Public Health, for the presage of the traumatized teeth, and it is of vital importance that an appropriate treatment is made as soon as possible after the accident. The therapy to make will depend of: the size of the exhibition, lapsed time, I develop of the foramen apical, vitality and teething type. Objective: to describe the feasibility of a case of apicoformación in left incisive superior power station, with cementation of rigid stem, stump conformation and definitive esthetic and functional restoration. Discussion: Patient of 8 years old, masculine that goes to consultation after suffering traumatism consistent dentoalveolar with complicated Fracture of crown, to the rays X is observed slight periodontal expansion and immature apex. Conclusions: the cementation of a rigid stem is an alternative feasibly to realize in functional treatments of apexification for complicated fracture of crown, due to its supposed a rapid recuperation of oral functions and integral social- psychological of the patient.

Introduction: bacterial dental plaque and biofilms are formed in hard and soft dental tissue alike. They are the main cause of dental caries and periodontal disease in the patients affected. Objective: identify the effect of the materials most commonly used in dental practice against the formation of bacterial dental plaque. Methods: a bibliographic review was conducted about the antibiofilm properties of the main materials used in dental practice. The inclusion criteria were the following: inhibitory properties, formation and/or development of bacterial dental plaque on the surface of dental cements used in endodontics, commonly used dental cements such as zinc oxide, polycarboxylate and glass ionomer, permanent restoration materials such as composite resins and silver amalgam. Data were obtained from the search engines and platforms SciELO, HINARI and MEDLINE. A review was conducted of 21 high impact journals dealing with the topic. About 899 papers were obtained, of which only 39 were included in the study. 52.6 % of the papers had been published in the last five years. Integration of results: a description is provided of the effect of several dental cements, materials used in endodontics and permanent restoration materials against the formation of bacterial dental plaque. Conclusions: according to the bibliographic review conducted, the materials that most commonly enable the formation of bacterial dental plaque are composite resins, followed by silver amalgam. Cements used in endodontic treatment were found to have antifilm properties, whereas cements with zinc compounds, high pH and fluoride releasing capacity exhibited optimal inhibitory and antifilm properties.

El Eugenol es un derivado fenólico conocido comúnmente como esencia de clavo, que es utilizado desde hace varios siglos en la práctica odontológica. Por sus propiedades farmacológicas tiene diferentes usos. Sus efectos farmacológicos son complejos y dependen de la concentración del Eugenol libre a la cual el tejido se expone. En este trabajo se presentan sus características farmacológicas y toxicológicas; se mencionan algunos de los mecanismos de acción propuestos para ambos efectos, y se exponen algunos de los nuevos materiales que se utilizan actualmente en estomatología; se presentan sus usos y sus ventajas sobre las formulaciones de Eugenol ya existentes.Eugenol is a phenolic derivative, commonly known as "esencia de clavo", which has been used in dental practice for centuries. Its pharmacological properties determined different uses. Its pharmacological effects are complex and depend on the concentration of free Eugenol to which the tissue is exposed. This paper presents the pharmacological and toxicological characteristics of Eugenol; it mentions some of the mechanisms of action proposed for both effects and also presents some of the new materials used in dentistry nowadays. Their uses and advantages over already existing Eugenol formulations are set forth.