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

OBJECTIVES

This 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 METHODS

One-hundred human maxillary central incisors were used. The canals were enlarged to a diameter of 1.7 mm. Specimens were divided into 5 groups ( = 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 ( = 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 χ test; values < 0.05 indicated statistical significance.

RESULTS

The type of ICM and the type of plug material significantly affected bond strength ( < 0.01). Regardless of the type of ICM, BA showed a lower bond strength than MTA ( < 0.05). For MTA, CH showed a higher bond strength than CON, TAP and DAP; CHX showed a higher bond strength than DAP ( < 0.01). For BA, CH showed a higher bond strength than DAP ( < 0.05). The mode of failure was predominantly cohesive for BA ( < 0.05).

CONCLUSIONS

MTA 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.