Influence of ultrasonic agitation on bond strength, marginal adaptation, and tooth discoloration provided by three coronary barrier endodontic materials

Clinical Oral Investigations
Bernardo A AguiarBruno Carvalho de Vasconcelos

Abstract

The effect of ultrasonic agitation (UA) on bond strength and adaptation of cervical plugs prepared with MTA Angelus (MTA), MTA Repair HP (MTAHP), and Biodentine (BIO) was evaluated. Dentin discoloration caused by the materials/treatment was also assessed. Seventy-two single rooted teeth were divided into six groups depending on the materials/treatment. After cervical plug preparation, dentin discs were excised for the push-out test; additional discs were analyzed under the confocal microscope to determine adaptation (gaps occurrence). For dentin discoloration analysis (ΔE), blocks of bovine incisors had cavities prepared and filled with the materials/treatment (from 7 to 180 days). Both bond strength and adaptation were positively influenced by UA (P < 0.05). Comparison between materials showed an advantage for BIO when compared to MTAHP (P < 0.05). The best and worst results were provided by BIO/UA (12.66 MPa and 1.87%) and MTAHP (2.54 MPa and 28.58%), respectively. For ΔE, significant differences were observed throughout the periods. Just the MTA without UA exhibited noticeable discoloration at 180 days (P < 0.05). UA favored a better adaptation of the materials to the dentin root, resulting in higher bond strength and adapta...Continue Reading

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Citations

Aug 13, 2020·Australian Endodontic Journal : the Journal of the Australian Society of Endodontology Inc·Asiye Nur DinçerSelen Nihal Sisli
Sep 12, 2020·Microscopy Research and Technique·Taiane Correa FurtadoRicardo Abreu da Rosa
Apr 30, 2021·Brazilian Dental Journal·Rui Barbosa Marques JuniorMarina Amaral

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