Retention of BioAggregate and MTA as coronal plugs after intracanal medication for regenerative endodontic procedures: an ex vivo study

Abstract

ObjectivesThis study compared the retention of BioAggregate (BA; Innovative BioCeramix) and mineral trioxide aggregate (MTA; Angelus) as coronal plugs after applying different intracanal medications (ICMs) used in regenerative endodontics.Materials and MethodsOne-hundred human maxillary central incisors were used. The canals were enlarged to a diameter of 1.7 mm. Specimens were divided into 5 groups (n = 20) according to the ICM used: calcium hydroxide (CH), 2% chlorhexidine (CHX), triple-antibiotic paste (TAP), double-antibiotic paste (DAP), and no ICM (control; CON). After 3 weeks of application, ICMs were removed and BA or MTA were placed as the plug material (n = 10). The push-out bond strength and the mode of failure were assessed. The data were analyzed using 2-way analysis of variance, the Tukey's test, and the χ2 test; p values < 0.05 indicated statistical significance.ResultsThe type of ICM and the type of plug material significantly affected bond strength (p < 0.01). Regardless of the type of ICM, BA showed a lower bond strength than MTA (p < 0.05). For MTA, CH showed a higher bond strength than CON, TAP and DAP; CHX showed a higher bond strength than DAP (p < 0.01). For BA, CH showed a higher bond strength than DAP (p < 0.05). The mode of failure was predominantly cohesive for BA (p < 0.05).ConclusionsMTA may show better retention than BA. The mode of bond failure with BA can be predominantly cohesive. BA retention may be less affected by ICM type than MTA retention.

Effect of Hydrogel-Based Antibiotic Intracanal Medicaments on Push-Out Bond Strength

“…In the present study, Ca(OH) 2 had the highest bond strength compared with the typical clinical concentration of TAP and DAP as well as to the control regardless of the cement type. Previous studies generally agreed with the present findings for MTA 32,33 and Endosequence putty. 34 However, other studies showed no effects on the bond strength of MTA 12,28 and Biodentine 28 when Ca(OH) 2 was used.…”

“…31,33,34,43 Contrary to the current study, no predominant failure mode was reported when 1,000 mg/mL DAP was used with the three cements types. 10,31,33,34 One study reported a predominant adhesive failure with 1,000 mg/mL DAP for MTA cement. 31…”

“…In addition, 1,000 mg/mL DAP had the lowest bond strength with MTA cement. Previous studies that evaluated 10,32,33 and Endosequence root repair material 34 with TAP and DAP had similar findings. However, other studies demonstrated no effects on the bond strength of MTA when TAP or DAP was used.…”

“…When Ca(OH) 2 , no intracanal medicament, and 1,000 mg/mL TAP where used, cohesive and mixed type failures were higher in MTA, 10,11,24,31,33,43 Biodentine, 11,31 and Endosequence putty. 31,33,34,43 Contrary to the current study, no predominant failure mode was reported when 1,000 mg/mL DAP was used with the three cements types. 10,31,33,34 One study reported a predominant adhesive failure with 1,000 mg/mL DAP for MTA cement.…”

Regenerative Endodontic Procedures, Disinfectants and Outcomes: A Systematic Review

“…MTA retention, as an ideal restorative coronal sealing material after REP, is best with the use of non-setting calcium hydroxide as an intracanal medicament 40…”