• Journal of Pharmaceutical Investigation
• /
• v.29 no.2
• /
• pp.127-136
• /
• 1999

In order to eliminate demerits of conventional dosage forms, dipotassium glycyrrhizate was formulated as a slim mucoadhesive film type dosage form. The mucoadhesive drug layer gel containing dipotassium glycyrrhizate was prepared using $Noveon^{\circledR}$ AA-1, hydroxypropylcellulose-M, ethylcellulose N 100 and citric acid, and the protective layer gel by using ethylcellulose N 100, $Eudragit^{\circledR}$ RS and castor oil. The viscosity of drug layer gel of mucoadhesive film was enhanced as the increased amount of $Noveon^{\circledR}$ AA-1 or hydroxypropyl cellulose-M. The drug content was unifonnly $1160{\pm}14.6\;{\mu}g$, and was varied within 3.5%. The optimum film dosage form showed a good fluidity and malleability of drug layer, with 179 g of thickness, pH 5.7, 411 min of in vitro adhesion time and 172 g in gravity adhesive strength. The release time of drug from the mucoadhesive film was significantly shorter but was delayed when polymers such as ethylcellulose was added. From these results, the new mucoadhesive film may be effective for the treatment of aphthous stomatitis.

• Journal of Korean society of Dental Hygiene
• /
• v.17 no.6
• /
• pp.983-992
• /
• 2017

Objectives: This study is to compare measuring gingival and peridontal indices and changes in dental plaque per period using a three mix types of dentifrice and to investigate dental diseases preventive effects depending on gingivitis reducing effect of dentifrice through a clinical experiment. Methods: This study targeted adult females and males with mild to moderate gingivitis from age 20 to 60. The Calculus index, Papillary Marginal Attached Gingival (PMA) index, Gingival index, Patient Hygiene Performance (PHP) index, and Plaque index were measured at pre-experiment and at 1, 2, 4 weeks post experiment. Results: The PMA, Gingival index, PHP index, plaque index of experimentla group decreased after 4 weeks (p<0.05). Conclusions: A three mix types of dentifrice for relieving tooth sensitivity was verified to be effective in removing dental plaque and reducing gingivitis.