Abstract
Objective To study the clinical effects of different methods on endodontic inter appointment pain(EIAP) happened to the patients after premolar root canal preparations. Methods 152 teeth from 134 patients with acute or chronic pulpitis or apical periodontitis were randomly divided into T group and K group, used TiLos mixed root canal preparation system with step-down technique and stainless steel K file with step-back technique respectively to prepare root canal.Afterwards, the incidence rates of EIAP were observed and recorded. Results The incidence rates of EIAP in T group and K group were 6.17% and 21.11%, respectively.There was statistically significant difference between the two groups (χ2=7.404, P<0.01). Conclusion TiLos mixed root canal preparation system with step-down technique to prepare root cancal can reduce the incidence rate of EIAP. Key words: Root canal preparation; Toothache; TiLos mixed root canal preparation system; Step-down technique; Step-back technique; Premolar
Published Version
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