Micro-computed tomographic evaluation of a new system for root canal filling using calcium silicate-based root canal sealers

Abstract

Objectives This study evaluated by using micro-computed tomography (micro-CT) the filling ability and sealer apical extrusion promoted by a new Sealer Injection System (SIS; Angelus) with side openings needle, in comparison with the conventional injection system, associated with a new ready-to-use calcium silicate-based sealer (Bio-C Sealer). Materials and Methods Acrylic resin models containing a main curved artificial canal and 3 simulated lateral canals in apical, middle and cervical thirds were used. The main root canals were prepared using a rotary system up to size 35.05. The canals were filled with Bio-C sealer by using a single cone technique and the conventional delivery system or SIS. Samples were scanned in micro-CT. The percentage of voids throughout the entire extension of the main root canal and in each third of the lateral canals, besides the apical extrusion of the sealer was calculated. Data were submitted to t -test ( p < 0.05). Results There was no difference between both systems in the main root canals filling. Although the volume percentage of voids was similar in the apical and middle thirds of lateral canals, SIS had the greatest filling ability of the cervical third lateral canal. Moreover, the conventional system showed the highest apical extrusion of the sealer. Conclusions The conventional and SIS obturation systems had an appropriate filling ability of the main root canal. SIS had the best filling of the cervical third of the lateral canals, besides lower sealer apical extrusion, suggesting its clinical indication.

Contribution of XP‐Endo files to the root canal filling removal: A systematic review and meta‐analysis ofin vitrostudies

“…All included studies in this review used micro-CT for evaluating the amount of remaining filling materials in root canals (7,8,10,11,17,(43)(44)(45)(46)(47). In recent years, micro-CT analysis has gained popularity in volumetric evaluation of teeth as it allows obtaining images with high-resolution and quantitative analysis by differentiating tooth structures, voids and filling materials (52)(53)(54).…”

Micro‐CT evaluation of filling of flattened root canals using a new premixed ready‐to‐use calcium silicate sealer by single‐cone technique

“…Bio‐C Sealer, TotalFill BC and Sealer Plus BC (MK Life, Porto Alegre, RS, Brazil) presented similar percentage of voids, before and after immersion in distilled water or PBS (Torres et al, 2020). Also, Bio‐C Sealer showed an appropriate filling of artificial canals when using different obturation systems (Tanomaru‐Filho et al, 2020). The small particle size and proper viscosity of these sealers may favor their filling capacity, decreasing the presence of voids (Celikten et al, 2016; Wang et al, 2018).…”

Micro-computed tomography in preventive and restorative dental research: A review

“…Images can be graded on both a qualitative and quantitative basis. Analyses of root canal morphology, 59 60 cracks, 61 62 and the shaping, 63 cleaning, 64 and filling abilities 65 66 67 of different systems have been conducted using this technique. Table 1 presents a summary of the information discussed in this article.…”