The prognosis of traumatized teeth in general and of avulsed teeth in particular depends on prompt and appropriate treatment. Management of traumatic injuries may be a challenge to the non-specialized dentist, as they may occur when dentists are least prepared for it. The objective of this research was to investigate the knowledge of general practitioner dentists about the emergency management of dental avulsion in Curitiba, PR, Brazil. A group of 250 professionals were interviewed. The questions were related to knowledge of how to treat traumatic avulsion of teeth. The results suggest that the level of knowledge on the management of dental avulsion of the general practitioners dentists in Curitiba is adequate.
The purpose of this study was to compare the efficacy of different chelating solutions (17% EDTA and 10% citric acid) on the smear layer removal, and their effect on tubular dentin sealer penetration. Sixty root canals were prepared and distributed into four groups (n = 15) according to the final irrigation protocol: G1, final irrigation with 2.5 mL of distilled water; G2, final irrigation with 2.5 mL of 2.5% sodium hypochlorite solution; G3, final irrigation with 2.5 mL of 17% EDTA; and G4, final irrigation with 2.5 mL of 10% citric acid. Five specimens from each group were not filled to assess smear layer removal by scanning electron microscopy. Ten specimens from each group were filled for analysis of sealer penetration into dentinal tubules by confocal laser scanning microscopy. Smear layer removal (Kruskal-Wallis and Dunn's tests) and sealer penetration (F and Tukey's tests) were statistically analyzed with 95% of significance level. G3 and G4 had greater smear layer removal rates in the cervical and middle thirds, in comparison with G1 and G2 (p < .05). G3 and G4 had the highest percentages of sealer penetration in all thirds, in comparison with G1 and G2 (p < .05). Smear layer removal was effective only at the cervical and middle thirds when the chelating solutions were used. Sealer penetration into the dentinal tubules significantly increased in all root thirds when the specimens were treated with both chelating solutions.
ObjectivesThe aim of this study was to evaluate cases of dental trauma treated at the
specialized center of Pontifical Catholic University of Paraná, Curitiba,
Brazil, during a period of 2 years.Material and MethodsA total of 647 patients were evaluated and treated between 2003 and 2005. Data
obtained from each patient were tabulated and analyzed as to gender, age,
etiology, time elapsed after the injury, diagnosis (type of trauma), and affected
teeth.ResultsThe results revealed that male individuals aged 7 to 13 years presented the
highest prevalence of injury, and falling was the main causal factor. In most
cases, the time elapsed between the accident and the first care ranged from 4 to
24 h. A total of 1,747 teeth were affected, with higher incidence of
concussion/subluxation and coronal fracture, followed by lateral luxation and
avulsion. The permanent maxillary central incisors were the most commonly affected
teeth.ConclusionThe frequency and causes of dentoalveolar trauma should be investigated for
identification of risk groups, treatment demands and costs in order to allow for
the establishment of effective preventive measures that can reduce the treatment
duration and costs for both patients and oral health services.
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