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Tissue Regenerative activity of Zea Mays L. and Magnoliae cortex extract mixtures  

Kim, Tae-Il (Department of Periodontology, College of Dentistry, Seoul National University)
Rhyu, In-Cheol (Department of Periodontology, College of Dentistry, Seoul National University)
Chung, Chong-Pyoung (Department of Periodontology, College of Dentistry, Seoul National University)
Lee, Yong-Moo (Department of Periodontology, College of Dentistry, Seoul National University)
Ku, Young (Department of Periodontology, College of Dentistry, Seoul National University)
Publication Information
Journal of Periodontal and Implant Science / v.32, no.2, 2002 , pp. 403-414 More about this Journal
Abstract
I. Purpose of Study Zea Mays L. has been known to be effective for improving periodontal health and Magnoliae cortex to have effective antibacterial and antimicrobial activity against periodontal pathogens. The purpose of this study was to examine the biologic effects of Zea Mays L. and Magnoliae cortex extract mixtures on healing of rat calvarial bone defects. II. Materials & Methods 8mm circular defects were prepared on rat calvaria during surgical procedures of 180 Sprague-Dawley rats. The ethanolic extracts of Magnoliae cortex and Zea Mays L. and these two natural extract 1:1 and 2:1 (Magnoliae: Zea Mays L.) ratio mixtures were oral administrated by oral zondes once a day at two different dose of 94.5mg/kg, 189mg/kg body weight. There are nine groups of rats in this study: control group (no sample loading), Magnoliae cortex extract loading groups (I,II)(94.5mg/kg,189mg/kg respectively), Zea Mays L. extract loading groups (I,II), M:Z(1:1) loading groups (I,II), M:Z(2:1) loading groups(I,II). Rats were sacrificed at 4 weeks and 6 weeks after surgery. New bone formations around calvarial defects were radiographically and histologically measured by computerassisted histomorphometry. Each data was statistically analyzed by One-way ANOVA test. III. Results There were statistical significances between negative control group and the other test groups on radiographical and histological quantitative assessments. Among test groups, mixture groups showed statistical significances, especially, M:Z (2:1) groups (I and II) were highly significant.(p<0.05) These results implicated that the mixture of Magnoliae and Zea Mays L. (2:1 mixing ratio) with 94.5mg/kg concentration might be highly effective on the wound healing of bony defected site and have potential possibilities as a useful drug to promote bone tissue regeneration.
Keywords
Periodontal disease; Bone regeneration; Magnoliae cortex; Zea Mays L.; Natural extract; Sprague-Dawley rat;
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Times Cited By KSCI : 1  (Citation Analysis)
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