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Year : 2019  |  Volume : 31  |  Issue : 1  |  Page : 72-77

Efficacy of smear layer removal by two Ayurvedic herbal irrigants, using continuous vs. syringe and needle irrigation

Department of Conservative Dentistry and Endodontics, College of Dental Science and Hospital, Indore, Madhya Pradesh, India

Correspondence Address:
Dr. Rajeshwar Singh
5/2 Snehlata Ganj, Narayan Niwas, Indore - 452 003, Madhya Pradesh
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/endo.endo_28_18

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Introduction: A successful root canal therapy is largely dependent on thorough chemo-mechanical debridement of the root canal space. However, mechanical preparation inadvertently forms an amorphous layer, known as the “smear layer.” Traditionally used irrigants have a deleterious effect over root dentin and thus herbal alternatives can be a better option for smear layer removal with no action on root dentin. Aim: The purpose of the study was to compare the in vitro effectiveness of two potential herbal irrigants: 6% German chamomile extract (GCE) and 6% Morinda citrifolia juice (MCJ), in removal of smear layer. Materials and Methods: Eighty single-rooted human teeth were allocated into two equal groups: one to be instrumented with the self-adjusting file (SAF), while the other with WaveOne (WO). Four subgroups in each group were irrigated with 6% GCE, 6% MCJ, 17% ethylenediaminetetraacetic acid (EDTA) (positive control), and NS (negative control). Scanning electron microscopy (SEM) was used to evaluate the presence of smear layer. Statistical Analysis: As data for smear layer were categorical, Chi-square test was applied for data analysis. P < 0.05 was considered statistically significant. Results: The most effective smear layer removal in the coronal part was observed with SAF-EDTA and SAF-GCE, followed by WO-EDTA. In the middle part, SAF-GCE was equivalent to that of SAF-EDTA, followed by WO-EDTA and WO-GCE. In the apical third, the most efficient smear layer removal was observed with SAF-EDTA, followed by some removal of smear layer by WO-EDTA and SAF-GCE. GCE was as effective as EDTA in removal of smear layer in the coronal and mid-root regions, when used with continuous irrigation.

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