| Objective:A clinical report by using this form to compare efficacy of nickel titanium i3plus and Protaper two machine system.The root canal dredging rate,treatment time,the incidence of pain after treatment and the quality of root canal preparation were used to provide the clinical basis for the use of i3plus purple nickel titanium system.Method:According to the treatment order,40 patients(A total of 120 root canals)who needed to be treated by root canal therapy were randomly divided into experimental group and control group,with each group having a total of 20 patients.All patients are healthy,can cooperate with treatment,the patient’s age not less than 18 years of age.The root foramen is completely closed according to the X-ray and root canal therapy is required.The subjective symptoms and clinical examination were recorded before operation and make the X-ray to fully understand the situation of the teeth and root canal.treatment:the cavity was opened to expose root canal orifice,using the 8#or 10#C file with EDTA solution(17%)and chlorhexidine solution(2%)to dredge root canal,Measuring working length and record with root canal measuring instrument.Experimental group:root canal preparation used i3plus nickel、titanium system;control group:root canal preparation used Protaper nickel titanium system.The instrument was replaced every time;the root canal was with alternately flushed with 2ml of chlorhexidine solution and 2ml of EDTA solution(17%).It can be considered the root canal preparation was qualified when the following conditions are met:(1)Root canal length measuring instrument has been to the root canal working length;(2)Put the major gutta-percha point in the root canal after preparation to make the X-ray,the result indicate that the gutta-percha point distance the apical foramen less than 2 mm.After completing dredging a root canal,the author cleaned the instrument and observed whether the thread changed or broke:if not,the author would continue using it;if yes,the author would stop using it.Each instrument couldn’t use more than 10 root canals.In addition,the time required for each root canal treatment was recorded:the duration from the initial file into the root canal orifice to terminal file out of root canal orifice(including the time of replacing equipment and washing root canal).After root canal preparation is completed,the main point was inserted and the dental film was shot,after determining the main point reached the working length,the author filled the root canal from sides with AH-plus paste and cold pressing glue and completed the shooting.At the same time,the completed dental film was shot.The heat carrying device cut off the excess glue at the root canal orifice.The appropriate vertical compression device to soften root canal orifice gutta-percha condensation.Coronal use of Zinc Oxide as temporary closure to reduce the possibility of coronal microleakage.The patients were suggested to timely see doctor in case of pain or swelling.Subsequent visit was conducted after a week,and the the pain occurrence of diseased teeth after treatment.To be without spontaneous pain or bite pain while undergoing crown repair.Results:The differences between the experiential group and control group in the rate of root canal are not statistically significant(P>0.05);the experiential group have shorter time in completing the root canal treatment than the control group and the differences between them are statistically significant(P<0.05);in pain level the two group has statistically significant difference in pain level Ⅱ(P<0.05)and there was no statistically significant difference between the two group in pain level(P>0.05).in terms of the quality of root canal preparation,postoperative X-ray shows the qualified rate of experimental group are 98.3%and 80.0%respectively,and they are statistically significantly different(P<0.05).Conclusion:Nickel-titanium i3plus can quickly complete treatment,postoperative pain incidence is lower than Protaper system,root filling quality is better,better treatment effect. |
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