›› 2010, Vol. 30 ›› Issue (3): 333-.

• Original article (Clinical research) • Previous Articles     Next Articles

Comparison of postoperative pain after vital pulp root canal preparation with nickel-titanium rotary instrument and hand-used instrument

HUANG Yi-feng1, DU Rong2, HONG Jin1   

  1. 1. Stomatology Special Consultation Clinic, 2. Department of Endodontics, Shanghai Key Laboratory of |Stomatology, The Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200011, China
  • Online:2010-03-25 Published:2010-03-24
  • Supported by:

    Shanghai Science and Technology Committee Foundation, 08DZ2271100

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Abstract:

Objective To compare the post-operative pain after vital pulp root canal preparation with K3 nickel-titanium rotary instrument and hand-used instrument. Methods One hundred and sixty-one vital teeth from 82 patients who received selected pulpectomy were enrolled, and root canal preparation was performed with K3 nickel-titanium rotary instrument (rotary instrument group, n=84) or stainless hand K-files (hand-used instrument group, n=77). Patients revisited one week later, the incidence and degree of post-operative pain after root canal preparation were recorded and compared between two groups. Results The incidences of post-operative pain after root canal preparation in rotary instrument group and hand-used instrument group were 29.76% and 55.84%, respectively, and the incidences of ⅡⅢ grade pain were 5.95% and 18.18%, respectively, with significant differences between two groups (P<0.01 and P<0.05). In hand-used instrument group, the incidence of Ⅱ-Ⅲ grade pain of molar teeth was significantly higher than those of anterior teeth and premolar teeth after root canal preparation (P<0.01). Conclusion Vital pulp root canal preparation with K3 nickel-titanium rotary instrument is efficient and safe, with low incidence and mild postoperative pain.

Key words: root canal preparation, postoperative pain, root canal preparation instrument