The efficacy of the self-adjusting file and ProTaper for removal of
calcium hydroxide from root canals |
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| Authors: | Gisele FARIA Milton Carlos KUGA Alessandra Camila RUY Arturo Javier ARANDA-GARCIA Idomeo BONETTI-FILHO Juliane Maria GUERREIRO-TANOMARU Renato Toledo LEONARDO |
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| Institution: | 1. DDS, MSc, PhD, Assistant Professor, Department of Restorative Dentistry, Araraquara Dental School, UNESP - Univ. Estadual Paulista, Araraquara, SP, Brazil.;2. DDS, Araraquara Dental School, UNESP - Univ. Estadual Paulista, Araraquara, SP, Brazil.;3. DDS, MSc, PhD, Member of Mexican Navy.;4. DDS, MSc, PhD, Associate Professor, Department of Restorative Dentistry, Araraquara Dental School, UNESP - Univ. Estadual Paulista, Araraquara, SP, Brazil. |
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| Abstract: | ObjectiveThe goal of this study was to evaluate the efficacy of the Self-Adjusting File
(SAF) and ProTaper for removing calcium hydroxide Ca(OH)2] from root
canals. Material and MethodsThirty-six human mandibular incisors were instrumented with the ProTaper system up
to instrument F2 and filled with a Ca(OH)2-based dressing. After 7
days, specimens were distributed in two groups (n=15) according to the method of
Ca(OH)2 removal. Group I (SAF) was irrigated with 5 mL of NaOCl and
SAF was used for 30 seconds under constant irrigation with 5 mL of NaOCl using the
Vatea irrigation device, followed by irrigation with 3 mL of EDTA and 5 mL of
NaOCl. Group II (ProTaper) was irrigated with 5 mL of NaOCl, the F2 instrument was
used for 30 seconds, followed by irrigation with 5 mL of NaOCl, 3 mL of EDTA, and
5 mL of NaOCl. In 3 teeth Ca(OH)2 was not removed (positive control)
and in 3 teeth canals were not filled with Ca(OH)2 (negative control).
Teeth were sectioned and prepared for the scanning electron microscopy. The
amounts of residual Ca(OH)2 were evaluated in the middle and apical
thirds using a 5-score system. ResultsNone of the techniques completely removed the Ca(OH)2 dressing. No
difference was observed between SAF and ProTaper in removing Ca(OH)2 in
the middle (P=0.11) and the apical (P=0.23) thirds. ConclusionThe SAF system showed similar efficacy to rotary instrument for removal of
Ca(OH)2 from mandibular incisor root canals. |
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| Keywords: | Calcium hydroxide Endodontics Root canal therapy Irrigation |
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