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Shenyang, China

Ba H.,Bureau of Changzhou Public Security | Shao G.,Bureau of Changzhou Public Security | Dong Y.,The 202nd Hospital of PLA | Lin Z.,China Criminal Police College
Chinese Journal of Forensic Medicine | Year: 2011

According to the histopathology characteristics and the gene source, the hydatidiform mole (HM) is divided into partial hydatidiform mole (PHM) and complete hydatidiform mole (CHM). Obtain the types and organizational source of HM, besides use histopathological method, we still can use the method of STR loci detection. According to the types, organizational source and fertilization ways of HM, we can paternity testing using the principle and method of group genetics. Source


Li H.-Y.,The 202nd Hospital of PLA | Zhong L.-F.,Liaoning Medical University | Liu B.,The 202nd Hospital of PLA | Cai H.-D.,The 202nd Hospital of PLA
Chinese Journal of Tissue Engineering Research | Year: 2013

BACKGROUND: Metal porcelain crown is the most commonly used method of repair of dental defects, and periodontal problems are the most common causes of repair failure. OBJECTIVE: To evaluate the influence of cobalt-chromium alloy and silver-palladium alloy as the materials of inner crown on periodontal tissue. METHODS: Totally 189 clinical diseased teeth from 75 patients were chosen in this study. 106 teeth were repaired with cobalt-chromium alloy porcelain crown, and 83 were repaired with silver-palladium alloy porcelain crown. The changes in periodontal sulcus bleeding index and amount of gingival crevicular fluid were observed. Interleukin-1 beta, tumor necrosis factor alpha and the positive rates of Porphyromonas gingivalis, Actinobacillus actinomycetemcomitans, Tannerella forsythia in the gingival crevicular fluid were detected. RESULTS AND CONCLUSION: In the cobalt-chromium alloy porcelain crown group, there were significant differences in periodontal sulcus bleeding index, the amount of gingival crevicular fluid, interleukin-1 beta, and tumor necrosis factor alpha as well as the positive rates of Porphyromonas gingivalis and Tannerella forsythia in the gingival crevicular fluid prior to and 12 months post-restoration (P < 0.05), while there was no significant difference in the positive rate of Actinobacillus actinomycetemcomitans (P > 0.05). In the silver-palladium alloy porcelain crown group, there were significant differences in periodontal sulcus bleeding index and the amount of gingival crevicular fluid (P < 0.05), but no differences in interleukin-1 beta, tumor necrosis factor alpha and the positive rates of Porphyromonas gingivalis, Actinobacillus actinomycetemcomitans and Tannerella forsythia in the gingival crevicular fluid prior to and 12 months post-restoration (P > 0.05). The cobalt-chromium alloy porcelain crown may have an adverse effect on periodontal tissue to a certain degree, while the silver-palladium alloy is an ideal substrate material of porcelain fused to metal crown. Source

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