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ABSTRACT
Effectiveness of pre-sterilization cleaning of endodontic instruments before placement in glass bead sterilizer
Shabir Ahmad Bhat
ABSTRACT
Background: Sterilization prevents the spread of infectious diseases. The present study was conducted to assess effectiveness of pre-sterilization cleaning of endodontic instruments before placement in glass bead sterilizer. Materials & Methods: The present study was conducted on 40 K files contaminated by preparing canals of extracted human mandibular teeth & were divided in 4 groups of 10 instruments as group I was negative control (non contaminated), group II was positive control (contaminated without any cleaning protocol), group III was manual brushing + 3% H2O2 for 10 minutes and group IV was manual brushing + ultrasonic bath for 5 minutes. Debris score was assessed in all groups. Results: Score 4 was seen maximally in group II and group I, score 3 in group III and group II, score 2 in group IV, III and II and score 1 in group IV, I, III and group II. The difference was significant (P< 0.05). Conclusion: Authors found that manual brushing and ultrasonic bath is effective way of cleaning instruments as compared to manual brushing and hydrogen peroxide method.
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