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Journal of Applied Oral Science

versão impressa ISSN 1678-7757versão On-line ISSN 1678-7765

Resumo

DOURADO, Adriane Tenório; CALDAS JUNIOR, Arnaldo de França; ALVES, Diógenes Ferreira  e  FALCAO, Creso Abreu. Bacteriemia during endodontic treatment in relation to the technique of biomechanical preparation: randomized clinical trial. J. Appl. Oral Sci. [online]. 2005, vol.13, n.4, pp.334-339. ISSN 1678-7765.  http://dx.doi.org/10.1590/S1678-77572005000400004.

OBJECTIVE: The aim of this randomized clinical trial was to evaluate the frequency of bacteriemia during endodontic treatment, with comparison between two techniques for biomechanical preparation of the root canal system. MATERIALS AND METHODS: The sample comprised 50 patients aged 16 to 52 years, of both genders, which were divided into 2 groups with 25 patients each. Group I underwent biomechanical preparation by the step-back technique, and Group II was treated by the rotary technique with nickel-titanium instruments (K3). Patients were submitted to antisepsis of the oral cavity with chlorhexidine digluconate and three samples of blood were collected for blood culture: preoperatively, immediately after the biomechanical preparation and 10 minutes later. The significance level adopted was 5.0%, and analysis was performed by descriptive and inferential statistics by means of the Fisher's exact test, Fisher-Freeman-Halton test and Student's t test. Data were analyzed on the Statexact and SPSS softwares. RESULTS: All blood cultures achieved before and immediately after preparation were negative. On the other hand, with regard to the blood cultures collected 10 minutes after preparation, one (4%) positive case was found for Group I. However, this difference was not statistically significant (p = 0.50). CONCLUSION: The frequency of bacteriemia was low and observed just for Group I.

Palavras-chave : Bacteremia; Endocarditis, bacterial; Antibiotic prophylaxis; Root canal therapy.

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