Clinical evaluation of two nickel-titanium rotary systems in one-visit endodontic treatment for infected root canals.

TL;DRAbstract

AIM:To evaluate the postoperative pain level and treatment effect after 1 year by using nickel-titanium rotary systems(ProTaper and Hero642)in one-visit root canal therapy for infected root canals. METHODS: One hundred and twelve infected teeth were included in one-visit root canal therapy group and 95 infected teeth were in two-visit group. A comparison of the clinical results was done between the two groups. The observations included post operative pain, x-ray examination and treatment effect after 1 year. RESULTS: Teeth without pain or postoperative pain lasted for 24h accounted for 80.4% in one-visit group, and 81.1% in the two-visit group(P0.05). After 1 week there was also no significant difference between the two groups in moderate and severe pain. After 1 year, the success rate of one-visit group was 90.6%, and the other was 92.5% (P0.05). CONCLUSIONS:One-visit endodontic treatment for infected root canals has the same clinical efficacy as two-visit in regard to postoperative p

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