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RESEARCH
Year : 2022  |  Volume : 22  |  Issue : 3  |  Page : 233-239

Bacterial microleakage in endodontically treated teeth following two methods of postspace preparation at two-time intervals: An in vitro study


1 Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
2 Dentist, Private Practice, Tehran University of Medical Sciences, Tehran, Iran
3 Board Certified Endodontist, Private Practice, Tehran University of Medical Sciences, Tehran, Iran
4 Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran

Correspondence Address:
Azam S Mostafavi
Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, North Kargar Avenue, Tehran
Iran
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jips.jips_441_21

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Aims: The goal of this study was to analyze the bacterial microleakage following two methods (heat vs. rotary) of postspace preparation after two-time intervals (immediate vs. 1 week later). Setting and Design: In vitro-comparative study. Materials and Methods: Eighty-two single-rooted teeth were decoronated at the cementoenamel junction. Root canals were prepared using rotary files. After root canal obturation, specimens were randomly allocated to 4 experimental groups based on the method of postspace preparation (heat or peeso reamer) and time interval (immediate or 1 week later) (n = 18). Group 1: Peeso reamer-immediate, Group 2: Heat-immediate, Group 3: Peeso reamer-1 week later, Group 4: Heat-1 week later. 10 specimens were considered as positive and negative controls (n = 5 each). Custom-made dual-chamber devices were used to appraise the bacterial microleakage for 60 days. Statistical Analysis Used: Data were analyzed with Chi-Square and Log-Rank tests and Cox regression. Results: All through the experimental period, there was no significant difference (P = 0.41) between the studied groups. Groups 2 and 4 had the highest microleakage and the lowest survival rate (55.56% ± 11.71%). Group 1 showed the lowest microleakage and the highest survival rate (77.8% ± 9.80%). Conclusions: The applied techniques for postspace preparation and the time intervals (neither independently nor simultaneously) showed no significant difference in the field of bacterial leakage.


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