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Micro‐CT analysis of the marginal adaptation and porosity associated with ultrasonic activation of coronally placed tricalcium silicate‐based cements
Author(s) -
Dinçer Asiye Nur,
Güneşer Mehmet Burak,
Sisli Selen Nihal
Publication year - 2020
Publication title -
australian endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.703
H-Index - 34
eISSN - 1747-4477
pISSN - 1329-1947
DOI - 10.1111/aej.12422
Subject(s) - materials science , ultrasonic sensor , porosity , coronal plane , dentistry , composite material , medicine , radiology
Abstract This study aimed to evaluate the effect of ultrasonic activation on coronal marginal adaptation and microporosity of tricalcium silicate–based materials. Sixty freshly extracted human maxillary lateral incisor teeth were instrumented with ProTaper Next X2 files followed by Peeso‐Reamer burs, sizes 1 to 5. The specimens were randomly divided into six groups ( n = 10): Group 1, Biodentine + hand condensation; Group 2, Biodentine + ultrasonic activation; Group 3, NeoMTA Plus + hand condensation; Group 4, NeoMTA Plus + ultrasonic activation; Group 5, ProRoot WMTA + hand condensation; and Group 6, ProRoot WMTA + ultrasonic activation. All tested materials were mixed mechanically and placed 2 mm underneath the cement–enamel junction by hand condensation or indirect ultrasonic activation. Volumetric analysis of the voids between the dentine wall and coronal barrier material and the porosity within the material was evaluated with micro‐CT. There was no significant difference in marginal adaptation among the six groups ( P > 0.05). Ultrasonic activation favoured a reduced microporosity in Biodentine Group ( P < 0.001).