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《Chinese Journal of Geriatric Dentistry》 2006-04
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Effect of molar root canal preparation with Hero642 Nickel-Titanium instrument on the occurrence of endodontic interappointment emergencies in old patients

LU Zhi-shan, LIU Zhong-hao, JIANG Guang-shui, LI Zhi-qiang, REN Guang-hui, WANG Tie-jun. (Yantai Stomatological Hospital, Shandong, 264000, China)  
Objective: To explore the effect of Hero642 rotary Nickel-Titanium instrument on the endodontic interappointment emergencies in old patients after molar root canal preparation. Methods: 138 molars in old patients were randomly divided into two groups which were treated with Hero642 Nickel-titanium rotary instruments and stainless steel K-files respectively. The incidence of endodontic interappointment emergencies in the two groups was compared. Results: In Hero642 Nickel-titanium group, the incidence of endodontic interappointment emergencies was 16.46%, while 37.29% of the teeth in the control group developed interappointment emergencies after hand preparation. There was significant difference between the two groups (P 0.01). Conclusion: Hero642 rotary Nickel-Titanium instrument can decrease the incidence of endodontic interappointment emergencies of old patients' molars after root canal preparation.
【CateGory Index】: R781.05
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