Int J Stomatol

Inter J Stomatol ›› 2016, Vol. 43 ›› Issue (1): 8-.doi: 10.7518/gjkq.2016.01.003

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Evaluate different placement technique of mineral trioxide aggregate using portland cement: an in vitro study

Wang Ruyan1,2, Song Ying3, Huang Dingming1, Gao Yuan1.   

  1. 1. State Key Laboratory of Oral Diseases, Dept. of Conservative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; 2. Dept. of Stomatology, North District of Suzhou Municipal Hospital, Suzhou 215008, China; 3. Dept. of Conservative Dentistry and Endodontics, Stomatological Hospital of Chongqing Medical University, Chongqing 400015, China
  • Received:2015-05-08 Revised:2015-10-12 Online:2016-01-01 Published:2016-01-01

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Abstract:

Objective To evaluate the effect of four different placement techniques on the edge sealing and compactness of mineral trioxide aggregate(MTA) using Portland cement(PC), and the impact of using conveyor on residual materials on the root canal wall. Methods Established large apical straight root canal model and trumpet-shaped straight root canal model. Using four different placement techniques(Gutta-percha, EndoActivator, direct ultrasonic and indirect ultrasonic) placement PC in two models. Then they were observed and scored under a stereomicroscope. Using delivery and plugger transport PC into large apical root canal model, then the PC that residual on the root canal wall was measured. Results In guttapercha group, large apical root canal was great than trumpet-shaped straight root canal(P<0.05). In large apical root canal, indirect ultrasonic and gutta-percha were great than the other two(P<0.05). And the residual MTA on the root canal wall using delivery was less than plugger(P<0.05). In trumpet-shaped straight root canal, indirect ultrasonic was great than the other three(P<0.01). Conclusion It can decrease MTA that residual on the root canal wall by using delivery. When place MTA in large apical root canal, gutta-percha and indirect ultrasonic are both good choice, while indirect ultrasonic is the best choice in trumpet-shaped straight root canal.

Key words: mineral trioxide aggregate, apical barrier, ultrasonic instrument

CLC Number: 

  • R 781.05

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