Efetividade de três soluções na descontaminação de cones de guta-percha e de resilo / Effectiveness of three solutions in disinfection of gutta-percha and resilon pellets

O objetivo deste trabalho foi verificar a efetividade na descontaminação de cones de guta-percha e de resilon com os seguintes grupos: hipoclorito de sódio 5,25% durante 1 minuto; hipoclorito de sódio 2,5% durante 1 minuto; clorexidina 2% durante 1 minuto; glicerina fenicada durante 24 horas. Os agentes apresentaram-se eficazes, sem diferença estatística significativa, embora a clorexidina a 2% tenha apresentado um percentual de 20% de amostras positivas tanto na guta-percha como no resilon, o que pode ser considerado relevante clinicamente. Concluiu-se que o hipoclorito de sódio e a glicerina fenicada podem ser indicados para a descontaminação de ambos os tipos de cone, nas duas concentrações testadas.

The aim of this study was to assess the effectiveness in decontamination of gutta-percha and Resilon with the following groups: 5.25% sodium hypochlorite for 1 minute; 2.5% sodium hypochlorite for 1 minute, 2% chlorhexidine during 1 minute; glycerin fenicada for 24 hours. The agents had been effective, not statistically significant, although the 2% chlorhexidine presented a higher percentage of 20% of positive samples in both the gutta-percha and Resilon in what can be considered clinically relevant. It was concluded that sodium hypochlorite and glycerin fenicada may be indicated for the decontamination of both types of cone, at the concentrations tested.

Avulsion of permanent teeth with open apex: a systematic review of the literature

Introduction: Considered the most serious of dental injuries, avulsion is known as the total displacement of tooth out of its socket. Treatment includes immediate replantation and its success is directly related to several factors. Objective: This paper aimed to review the literature in a systematic way on dental avulsion of permanent teeth with open apex, covering various topics such as: reason for avulsion; storage media; time out of the socket; use of antibiotics; splinting time; tooth vitality; presence of resorption and/or obliteration of pulp canal; and following-up time. Material and methods: PubMed/MedLine database and Dental Traumatology journal were searched, from May to June of 2011, and several studies comprising the current and classic literature were listed using the following terms: tooth avulsion, open apex, permanent and case report. Results and conclusion: Twelve cases reports were selected. Cases of dental trauma in open apex teeth may have a good prognosis if the following steps are taken: the hydration of the tooth and immediately replantation. It is important to search dental care, even if everything seems solved, and the tooth following-up should be performed periodically as informed by the dentist.