Effect of irrigation technique for removal of triple antibiotic paste on bond strength of MTA to root dentin

Abstract

This study evaluated the bond strength of mineral trioxide aggregate (MTA) to root canal dentin after the performance of various irrigation procedures to remove triple antibiotic paste (TAP). A total of 56 single-rooted human mandibular premolars were instrumented using a rotary system to size 40 and divided randomly into a control group (no intracanal dressing) and three experimental groups (TAP application for 28 days). TAP was then removed by rinsing with 10 mL 2.5% NaOCl using three irrigation systems (Vibringe sonic irrigation, CanalBrush, and syringe irrigation). The coronal and middle parts of root canals were then obturated with MTA. After storage for 1 week, each specimen was embedded in an acrylic block and sectioned horizontally (2-mm-thick slices) at two levels (coronal and middle). Bond strength of MTA to root canal dentin was assessed in 28 samples per group via push-out test using a universal testing machine. Data from the four groups were compared using one-way analysis of variance. Tukey's test was used for multiple comparisons. Push-out bond strength values were significantly higher in the control and Vibringe groups than in the CanalBrush and syringe irrigation groups (p < 0.001). TAP removal from root canals with the Vibringe irrigation system may increase the push-out bond strength of MTA compared with the use of the CanalBrush or syringe irrigation.

Effect of intracanal medicaments used in endodontic regeneration on the push-out bond strength of a calcium phosphate-silicate-based cement to dentin

“…By contrast, while the present study found TAP application lowered the push-out bond strength of ERRM to dentin, the difference in bond strength was not statistically significant between the TAP and control groups. Given the differences in methodologies and materials between Topcuoglu HS et al 16 and Dumani A et al 20 and the present study, the differences in findings are unremarkable.…”

“…For example, although Topcuoglu HS et al 16 found DAP to have a negative effect on the sealing ability of MTA, which is in line with the present study’s finding that DAP negatively affecting the bond strength of ERRM, the authors of this earlier study also reported CH and TAP to result in similarly high push-out bond strengths, which conflicts with the present study’s finding that CH application resulted in significantly higher bond strengths when compared to TAP application. 16 Moreover, Dumani A et al 20 found the push-out bond strength of MTA to dentin was significantly decreased by TAP application, even though the TAP was removed from canals by irrigation. By contrast, while the present study found TAP application lowered the push-out bond strength of ERRM to dentin, the difference in bond strength was not statistically significant between the TAP and control groups.…”

Efficacy of XP-Endo Finisher and Passive Ultrasonic Irrigation on Modified Triple Antibiotic Paste Removal

“…Removal of TAP from root canals was evaluated with different irrigation agitation techniques such as needle irrigation, sonic irrigation, PUI, EndoVac (SybronEndo, Coppell, TX), CanalBrush (Coltene/Whaledent GmbH+ Co KG, Langenau, Germany), and EndoActivator (Dentsply, Tulsa, OK, USA). 16,18,22 Additionally, XPF was used to remove the antibiotic paste in a recent study. 23 When using the XPF file in root canal, the instrument become a spoon shape in its austenite phase and this shape provides more contact of the file to the root canal dentin, which may obtain higher cleaning efficacy.…”

Effect of intracanal medications on the interfacial properties of reparative cements

“…In this study, we conducted gentle manual agitation with the last instrument of the basic Mtwo sequence, along with irrigation using 5.25% sodium hypochlorite, 17% EDTA, and distilled water, to remove the intracanal medications. No known method is capable of completely removing intracanal medications from root canals, especially antibiotic pastes, even with the use of additional instruments such as passive ultrasonic irrigation, EndoActivator, EndoVac, XP-Endo, and sonic irrigation [222324]. The effects of medications on the bond strength of coronal sealing materials are critical because these cements remain in place under destructive forces, such as condensation and pressure of sealing materials, post placement, or restorative materials [14].…”