The Journal of the Korean dental association (대한치과의사협회지)

The Korean Dental Association (대한치과의사협회)
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Comparison of the mechanical efficacy of sonic activated irrigation and passive ultrasonic irrigation for intracanal medicaments removal

  • Jang, Ju-Kyong (Department of Conservative Dentistry, School of Dentistry, Pusan National University, Dental Research Institute) ;
  • Kwak, Sangwon (Department of Conservative Dentistry, School of Dentistry, Pusan National University, Dental Research Institute) ;
  • Choi, Ga Young (Department of Conservative Dentistry, School of Dentistry, Pusan National University, Dental Research Institute) ;
  • Ha, Jung-Hong (Department of Conservative Dentistry, School of Dentistry, Kyungpook National University) ;
  • Choi, Sung-Baik (Private Dental Clinic) ;
  • Kim, Hyeon-Cheol (Department of Conservative Dentistry, School of Dentistry, Pusan National University, Dental Research Institute)
  • Received : 2015.07.06
  • Accepted : 2015.09.02
  • Published : 2015.10.01
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Abstract

Objectives: This study compared the mechanical efficacy of sonic activated and passive ultrasonic irrigation for removing intracanal medicament from a simulated root canal under controlled conditions. Materials and Methods: Thirty simulated root canal in resin blocks were randomly divided into 3-groups. The canals were enlarged using ProTaper files and K3XF (#30/0.06). After cleaning and drying, canals were filled with Calcipex. Overfilled materials were wiped out and measured their weight to the unit of 1/10mg. After one week storage in 100% humidity $37^{\circ}C$ temperature, canals were irrigated using 20mL of saline with one of following methods according to the designated groups (n = 10). For group-NI, 30-gauge nickel-titanium irrigation needle was used. During irrigation with every 5mL, needle was moved in-and-out with 4-mm amplitudes. EndoActivator and ultrasonic tip were used for group-EA and group-UT respectively for 20 seconds after every 5mL irrigation using needle. Then the weight was measured again to calculate the weight of residual remnants. The data were analyzed by one-way ANOVA and Duncan's post-hoc test at a significance level of 95%. Results: The weight of the residual medicaments were $3.62{\pm}0.81mg$, $2.84{\pm}0.28mg$, and $2.73{\pm}0.90mg$ for group-NI, -EA, and -UT, respectively. Group-EA and group-UT had no significant differences to remove intracanal medicament and left significantly less amount of paste than group-NI (p < 0.05). Conclusions: Under the controlled conditions of this study, the sonic activation and PUI have similar mechanical efficacy for removing intracanal medicament.

Keywords

References

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