alexa Durability of peel bond of resilient denture liners to acrylic denture base resin.



Author(s): Maeda T, Hong G, Sadamori S, Hamada T, Akagawa Y

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Abstract PURPOSE: The purpose of this study was to determine the durability of the peel bond of commercial resilient denture liners to a denture base resin using a thermal cycling test. METHODS: Eight commercial resilient denture liners (five silicone and three acrylic) were used in the study. The samples were exposed to thermal cycles between 5°C and 55°C for 1 min for 0, 1,250, 2,500, 5,000 and 10,000 cycles. The test samples were placed under tension until failure in a materials testing machine using a crosshead speed of 20 mm/min. The modes of debonding were characterized as tear, peel or snap. Statistical analysis was performed using one-way and two-way analysis of variance and Student-Newman-Keuls multiple comparison tests (α=.05). RESULTS: A significant difference was found between different resilient denture liners for peel bond strength at 0 cycles. No extreme influence on the peel bond strength was observed under any of the thermal cycles. The snap mode of debonding was observed in most samples of all materials for all cycles. CONCLUSION: All resilient denture liners tested had a sufficiently strong bond to the denture base resin. Within the limitations of this study, the results show that all of the materials were acceptable for clinical use, having met the accepted adequate bond strength for resilient denture liners of 0.45 MPa. Copyright © 2011 Japan Prosthodontic Society. Published by Elsevier Ltd. All rights reserved. This article was published in J Prosthodont Res and referenced in Dentistry

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