Nafij Bin Jamayet , Genevieve Kong Yuiin Sze , Koay Chun Giok , James Dudley , Umer Daood
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Abstract
Objectives
The objective of this study was to compare the peel bond strength and modes of failure of maxillofacial prostheses (MFP) adhered to simulated human skin using regular adhesive and hydrobond adhesive following exposure to tropical outdoor weather.
Methods
Eighty MFP silicone specimens were constructed and adhered to simulated skin silicone using one of two maxillofacial prosthetic silicone adhesives (MFPSA): regular and hydrobond. For each adhesive, 20 samples were exposed to 4 h of tropical weather on five consecutive days (test group), and 20 samples were exposed to room temperature and dark room conditions for five consecutive days (control group). A T-peel test was conducted using a Universal Testing Machine and the samples were visually analyzed for mode of failure. Raman spectroscopic analysis was conducted with backscattering configuration.
Results
There were no significant differences in MFPSA peel bond strength between regular adhesive and hydrobond adhesives following five days of exposure to tropical weather. Within the tropical weather (test) group, hydrobond adhesive demonstrated similar peel bond strengths compared with the regular adhesive; p = 1.00 (Table 2). Within the room temperature and dark room conditions (control) group, hydrobond adhesive showed peel bond strengths significantly greater than the regular adhesive (p = 0.16). The mixed mode of failure involving both adhesive and cohesive failure was observed in 80 % of specimens.
Conclusions
The MFPSA peel bond strength was not affected by tropical weather conditions. Within the limitations of this in vitro study, the hydrobond adhesive demonstrated greater adhesive strength than the regular adhesive in room temperature and dark room conditions.
期刊介绍:
The International Journal of Adhesion and Adhesives draws together the many aspects of the science and technology of adhesive materials, from fundamental research and development work to industrial applications. Subject areas covered include: interfacial interactions, surface chemistry, methods of testing, accumulation of test data on physical and mechanical properties, environmental effects, new adhesive materials, sealants, design of bonded joints, and manufacturing technology.