de Sá, Maria Aparecida Barbosa, Nunes, Eduardo, Antunes, Alberto Nogueira da Gama, Brito Júnior, Manoel, Horta, Martinho Campolina Rebello, Rodrigues Amaral, Rodrigo, Cohen, Stephen, and Silveira, Frank Ferreira (2021) Push-out bond strength and marginal adaptation of apical plugs with bioactive endodontic cements in simulated immature teeth. Restorative Dentistry & Endodontics, 46 (4). e53.

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Abstract

Objectives: This study evaluates the bond strength and marginal adaptation of mineral trioxide aggregate (MTA) Repair HP and Biodentine used as apical plugs; MTA was used as reference material for comparison.

Materials and Methods: A total of 30 single-rooted teeth with standardized, artificially created open apices were randomly divided into 3 groups (n = 10 per group), according to the material used to form 6-mm-thick apical plugs: group 1 (MTA Repair HP); group 2 (Biodentine); and group 3 (white MTA). Subsequently, the specimens were transversely sectioned to obtain 2 (cervical and apical) 2.5-mm-thick slices per root. Epoxy resin replicas were observed under a scanning electron microscope to measure the gap size at the material/dentin interface (the largest and smaller gaps were recorded for each replica). The bond strength of the investigated materials to dentin was determined using the push-out test. The variable bond strengths and gap sizes were evaluated independently at the apical and cervical root dentin slices. Data were analyzed using descriptive and analytic statistics.

Results: The comparison between the groups regarding the variables' bond strengths and gap sizes showed no statistical difference (p > 0.05) except for a single difference in the smallest gap at the cervical root dentin slice, which was higher in group 3 than in group 1 (p < 0.05).

Conclusions: The bond strength and marginal adaptation to root canal walls of MTA HP and Biodentine cement were comparable to white MTA.

Item ID:	76161
Item Type:	Article (Research - C1)
ISSN:	2234-7658
Keywords:	Apexification; Calcium Silicate Materials; Marginal Adaptation; Mineral Trioxide Aggregate; Push-out Bond Strength; Scanning Electron Microscopy
Copyright Information:	© 2021. The Korean Academy of Conservative Dentistry. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (https://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Date Deposited:	11 Oct 2022 01:51
FoR Codes:	32 BIOMEDICAL AND CLINICAL SCIENCES > 3203 Dentistry > 320302 Dental materials and equipment @ 50% 32 BIOMEDICAL AND CLINICAL SCIENCES > 3203 Dentistry > 320304 Endodontics @ 50%
SEO Codes:	20 HEALTH > 2099 Other health > 209999 Other health not elsewhere classified @ 100%
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