| Autor: |
Maroli, Kriti, Sinha, Nidhi, Kaswan, Sumita, Singh, Bijay, Sharma, Ritu |
| Předmět: |
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| Zdroj: |
Indian Journal of Stomatology; 2013, Vol. 4 Issue 4, p107-114, 8p |
| Abstrakt: |
Aim: The present study was carried out in-vitro to evaluate, using a scanning electron microscope (SEM), the amount of smear layer and debris on the canal walls following hand instrumentation using stainless steel K files or a powered rotary technique using ProTaper nickel titanium files. Material and methods: 30 extracted mandibular premolars were selected and stored in normal saline. The teeth were divided into 2 groups- the Manual Group M and the ProTaper Group P. The M Group was hand instrumented with stainless steel K files by means of conventional filing technique. The P Group was instrumented with rotary Ni-Ti files (ProTaper, Dentsply Maillefer, Ballaigues, Switzerland) in a gear reduction hand piece (300 rpm, 1:128) according to manufacturer's instructions. 3% sodium hypochlorite was used as an irrigant. Mann-Whitney U test was used for inter Group comparison and inter-examiner variability. Results: Following instrumentation, the root canals were longitudinally split and the canal walls were observed under the scanning electron microscope (SEM) for debris and smear layer. The debris and smear score showed that group M produced significantly (p<0.05) cleaner canals than group P in the coronal and middle third. Coronal thirds were significantly (p<0.05) cleaner than apical thirds for debris and smear layer. Conclusion: It was concluded that manual stainless steel K files were more efficient in cleaning the root canal walls than Pro Taper nickel titanium rotary files in the middle and coronal thirds. In the apical third, both the techniques were ineffective in achieving adequate debridement. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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