| Comparison of the mechanical efficacy of sonic activated irrigation and passive ultrasonic irrigation for intracanal medicaments removal |
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Ju-Kyong Jang1, Sangwon Kwak2, Ga Young Choi3, Jung-Hong Ha4, Sung-Baik Choi5, Hyeon-Cheol Kim6 |
1Department of Conservative Dentistry, School of Dentistry, Pusan National University, Dental Research Institute
2Department of Conservative Dentistry, School of Dentistry, Pusan National University, Dental Research Institute
3Department of Conservative Dentistry, School of Dentistry, Pusan National University, Dental Research Institute
4Department of Conservative Dentistry, School of Dentistry, Kyungpook National University
5Private Dental Clinic
6Department of Conservative Dentistry, School of Dentistry, Pusan National University, Dental Research Institute |
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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°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 3.62pm0.81mg, 2.84pm0.28mg, and 2.73pm0.90mg 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. |
| Key Words:
calcium hydroxide;EndoActivator;intracanal medicament;passive ultrasonic irrigation;sonic activation; |
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