Chemical and pharmacological shaping of necrotic primary teeth

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ABSTRACT

Aim

The object of this study was the evaluation of the success rate of endodontic treatment of primary teeth with necrotic
pulps performed through a partial pulpectomy and a chemical shaping. Materials and methods. The study was conducted on 50 necrotic
primary molars, with an oral fistula and a clinical and radiographical positive diagnosis. On each tooth the endodontic treatment was
performed through mechanical strumentation for only 2-3 mm beyond the orifices of the canals and copious alternate irrigation with
10vol H2O2 and 3 NaOCl (chemical shaping). After the pharmacological shaping the canals were filled
with a slurry mix of powdered macrolide antibiotic (josamicina) and glycerine (or anaesthetic solution). At the second visit the same
procedure was either repeated, if an oral fistula was still present, or the canals were sealed with a small amount of josamicina and
glycerine paste and zinc oxide eugenol to a working length.

Results

The overall success rate, considering the first two teeth that
were extracted as inappropriate case selection, was 45 out of the original 48 or 93. While considering all the teeth treated the
success rate was 45 out of 50, or 90.

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