کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
3147505 | 1197366 | 2016 | 5 صفحه PDF | دانلود رایگان |
• The effect of irrigant activation methods on the debridement of isthmus of mandibular molars was studied.
• Histologic staining method was used.
• Syringe irrigation, continuous warm activated irrigation and evacuation system, manual dynamic agitation (MDA), and passive ultrasonic irrigation (PUI) were compared.
• CWAIS showed significantly better debridement than the other methods.
• MDA was significantly better than PUI and syringe irrigation 1 and 3 mm from the apex.
IntroductionThis study aimed to evaluate the efficacy of a new irrigation system (EndoIrrigator Plus; Innovations Endo, Nasik, India) using a histologic method ex vivo.MethodsMandibular molars with a normal pulp extracted for periodontal reasons (N = 68) were assessed for the presence of an isthmus using cone-beam computed tomographic imaging. Root canals of the included molars (n = 40) were instrumented up to a ProTaper F2 instrument (Dentsply Maillefer, Baillagues, Switzerland) using 3% sodium hypochlorite as irrigant in a closed apical design. Final irrigation delivery/activation was performed as follows (n = 10): group 1, syringe irrigation; group 2, apical negative pressure delivery with continuous warm activated irrigation and evacuation system (CWAIS); group 3, manual dynamic agitation (MDA); and group 4, passive ultrasonic irrigation (PUI). Untreated teeth (n = 5) served as histologic controls. The isthmus regions (1, 3, and 5 mm from the apex) were analyzed by hematoxylin-eosin stain to calculate the percentage of remaining pulp tissue (RPT) relative to the area of the isthmus. Results were analyzed using the Mann-Whitney U test (P = .05).ResultsCWAIS showed significantly less RPT than the other groups at all 3 root levels (P < .05). MDA showed significantly less RPT at 1 and 3 mm from the apex compared with PUI and syringe irrigation (P < .05). There was no significant difference between PUI and MDA at the 5-mm level (P > .05).ConclusionsNone of the methods could completely clean the isthmus. CWAIS left behind the least amount of RPT.
Journal: Journal of Endodontics - Volume 42, Issue 8, August 2016, Pages 1268–1272