Abstract

POI, Wilson Roberto et al. The citric acid action's in the removal of the delayed periodontal ligament of mouse teeth's.. Acta odontol. venez [online]. 2007, vol.45, n.2, pp.147-151. ISSN 0001-6365.

The maintenance of the periodontal ligament without vitality on the root surface can influence in the process of repair in the dental replantation, therefore it can be substituted by bone tissue or to give beginning to a process of inflammatory resorption. Therefore, many forms of removal of this ligament have been studied. It is intention of this work to evaluate, by means of histological study, the results of the treatment of the tooth surface in dental extraction and left in environment for 6 hours. For the accomplishment of the experiment 15 mouse, divided in three groups will be used, with 5 teeth in each: Group I, salt solution per three minutes; Group II, acid citric (pH 1,0) per three minutes e; Group III, friction of the root surface with acid humidified barren gauze with citric (pH 1,0) per one minute. After the laboratorial processing of routine the cuts had been submitted to the qualitative and quantitative analysis (Software ImageLab - Diracom 3). In all the groups had been observed remaining of the periodontal ligament in all palatal extension of the root s surface. Group III showed to greater tissue area with statistic significant difference (p > 0.001). It was possible to conclude that acid the citric one was not capable to after remove the rat periodontal tooth ligament necrosis six hours of drying, in none of the forms of used application.

Keywords : Citric acid; periodontal ligament; tooth replantation; tooth avulsion.