Marginal gaps and voids of three root‐end filling materials: A microcomputed tomographic study

Abstract

A root‐end filling material is required to fill the root‐end cavity without gaps or voids, to prevent root canal reinfection and to provide periapical healing. Thus, this study evaluated the volume of marginal gaps and voids of three root‐end filling materials using microcomputed tomography (micro‐CT). Thirty maxillary incisors were prepared and filled with gutta‐percha and endodontic sealer. The specimens were scanned using micro‐CT and distributed into three groups (n = 10): White MTA, MTA Repair HP, and Bio‐C Repair. The root tips were resected at 90° to the longitudinal axis and the cavity (3 mm depth) was prepared with an ultrasonic tip. The materials were handled, and the cavities were filled. The specimens were rescanned and the percentual volume of gaps and voids were analyzed. The data were analyzed using Kruskal–Wallis and Dunn tests (p < .05). No statistical difference was found in the percentage of gaps among the tested materials (p > .05). White MTA presented less voids than Bio‐C and MTA Repair HP (p < .05). The materials presented a similar percentual volume of gaps and White MTA presented less voids than other tested materials.

Biocompatibility of Bioactive Sealers Bio-C Sealer vs MTA Repair HP in Human Fibroblasts

“…Confirming the results obtained in the cell viability assays (MTS and LIVE/DEAD), the materials show similar results to the life control group, with the number of cells with fluorescent green-stained nuclei being lower in the Bio-C® Sealer group in comparison with MTA Repair HP®. These results agree with the data found in the scientific literature, where they conclude that, in addition to Bio-C® Sealer and MTA Repair HP® being the most studied silicate-based sealants from 2005 to 2020 (28,29), only a few studies showed slight genotoxicity in mammalian cells. Dos Santos et al report that MTA Angelus is the most tested sealant and showed an absence of genotoxicity with the comet assayin L5178Y cells, CHO-K1 cells, hPB lymphocytes, and 3T3-L1 cells; likewise, this sealant does not show genotoxicity evaluated with the micronucleus test performed on V79 cells and bone marrow cells from swiss mice (30).…”

A new proposal for evaluating of the solubility of bioceramic materials in dentin tubes after immersion in PBS: a laboratory investigation

“…BCR has greater filling capacity and less volumetric change than MTA Repair HP 15 , in addition it has adequate radiopacity 14 , less porosity and gaps in the material/dentin interface 16 . However, BCR has shown a higher percentage of voids when compared with White MTA (Angelus, PR, Brazil) 17 . However, there are no reports in the literature regarding the interaction of this material with dentin after immersion in different solutions.…”

Physicochemical and Antibacterial Properties of Bioactive Retrograde Filling Materials

“…Calcium silicate cement materials, colloquially denoted as “Bioceramic”, in both forms, sealer [ 8 ] or thicker mixture [ 9 ], are considered as the ideal endodontic material for retrograde treatment due to their excellent physicochemical and biological properties [ 10 , 11 , 12 , 13 , 14 , 15 ], including biocompatibility and stability. These inorganic and non-corrosive ceramic cements contain tricalciums silicate and various radiopaque powders [ 16 ].…”