Root canal filling quality of mandibular molars with EndoSequence BC and AH Plus sealers: A micro‐CT study

Abstract

The aim of this study was to compare, by micro-computed tomography (micro-CT) analysis, the obturation quality of two filling methods: the single-cone technique with the bioceramic EndoSequence BC sealer and the continuous wave technique with the resin-based AH Plus sealer. Twenty mandibular molars were divided into two groups (n = 10) according to the sealer used. Only the mesial roots, which are known to have mostly two canals, were used. The specimens were scanned before and after instrumentation and after obturation. Root canal volume after instrumentation and filling volume were calculated to obtain the percentage volumes of filling, voids and gaps. All specimens presented final volumes that were smaller than the initial volumes (P < 0.05). There was no significant difference between groups for filling volume, voids and gaps (P > 0.05). Using two filling methods, EndoSequence BC and AH Plus promoted a similar root filling quality in mesial roots of mandibular molars. Neither sealer was able to fill the root canal system completely. Aust Endod J 2020; 46: 82-87

GuttaFlow Bioseal as Monocone Obturation Technique in Curved Root Canals: A Scanning Electron Microscopy Study

“…Evaluation of obturation quality in the mesial roots of mandibular molars and the use of GuttaFlow Bioseal was corroborated with the past studies [26,27]. OrthoMTA (BioMTA, Seoul, South Korea) [26] and Endosequence BC (Brasseler USA, Savannah, GA, USA) [27] have both been investigated in the past, but the present study focuses on GuttaFlow Bioseal (Coltène/Whaledent) considering its excellent properties to seal the root canal system.…”

“…Evaluation of obturation quality in the mesial roots of mandibular molars and the use of GuttaFlow Bioseal was corroborated with the past studies [26,27]. OrthoMTA (BioMTA, Seoul, South Korea) [26] and Endosequence BC (Brasseler USA, Savannah, GA, USA) [27] have both been investigated in the past, but the present study focuses on GuttaFlow Bioseal (Coltène/Whaledent) considering its excellent properties to seal the root canal system. SEM imaging was selected in the present study because of its ability to produce high resolution images at higher magnifications compared to the conventional microscopy and this was congruent with previous studies [4,[39][40][41][42][43][44][45][46][47].…”

“…The evaluation of obturation quality in molars has been the subject of interest that has gained popularity in the recent years [19,[26][27][28]. In the past, the obturation quality has been evaluated in the incisors [29][30][31][32] and premolars [9,[33][34][35][36][37][38], however, changing approaches reflect the need to evaluate the effectiveness of obturation procedures in more complex root canal systems such as multirooted teeth with various root canal configurations and curvatures.…”

Retreatment of mesial roots of mandibular molars filled with resin- based and bioceramic sealers

“…The sealers used in the present study have similar physicochemical characteristics, such as high flow, biocompatibility and radiopacity 7,21 , although their compositions differ and also their adhesion mechanism to dentin. AH Plus is an epoxy resin sealer that interacts chemically with the root dentin collagen with covalent bonds between its epoxy rings and collagen amine groups 22 .…”

“…Micro-CT is a method that has been widely used in recent years to evaluate RCS anatomy, obturation and retreatment through three-dimensional analysis 10,11,15,20,21 . In the present study, micro-CT showed 23% remaining filling material in the AHP group, whereas that in the TF group was 28%; the two groups were not statistically significantly different.…”