Clinical evaluation of ProTaper NiTi instruments in root canal preparation

Objective To assess the clinical effects of ProTaper NiTi instruments in root canal preparation.Methods A total of 300 teeth which needed endodontic treatment were selected and randomly divided into 2 groups.The root canals were prepared with ProTaper NiTi instruments in ProTaper group and with K-files in K-files group respectively.The incidence of endodontic interappointment emergences(EIAE),the effects of canal obturation and incidence of the instrument fracture were compared by χ2 test.Results The incidence of EIAE(6.00%) in ProTaper group were significantly lower than that in the K-files group(26.67%)(P0.01).The rate of adequate root canal filling(93.77%) in ProTaper group were significantly higher than that in K-files group(88.64%)(P0.05).There was no significant difference in the incidence of instrument fracture between ProTaper group and K-files group(P0.05).Conclusions Using ProTaper NiTi instruments can reduce the incidence of EIAE and improve the effects of canal obturation.It is safe to use ProTaper NiTi instruments in root canal therapy.