Effect of Polymeric Combinations on Mucoadhesive and Swelling Properties of Orabase Gel Formulations

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Abstract:

Topical oral dosage form for anti-inflammation in the oral cavity provides convenience and patient compliance. Formulations of orabase gels composed of poloxamer 407, PVP, PVA, SCMC and/or white petrolatum (WP) and hydrocarbon gel (HG) were investigated for in vitro swelling and mucoadhesion for incorporation of melatonin. The highest detachment time of 18 h with an optimized swelling ratio of 1.3 was obtained from a gel with 55% of WP and HG in the presence of poloxamer 407 and PVP 90. In conclusion, an optimum balancing ratio between hydrocarbons and bioadhesive polymer parts is required to obtain mucoadhesive characteristics of the oral gel.

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December 2013

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