Influence of insertion torque on primary stability of dental implants in beagle / 实用医学杂志

Objective To investigate the correlation between the insertion torque values and primary stability of dental implants using different insertion torque values ,and search for the best insertion torque values that can acquire good primary stability. Methods Six male pure beagles were selected, and the first molars and four premolars of bilateral mandibulars were extracted. Three months later, a total of 48 XIVE dental implants were inserted. All implants were divided into group A, group B, group C, and group D based on the insertion torque value (ITV): group A, 0 0.05). Conclusion With the limitations of the study, it was concluded the primary stability does not simply depend on the insertion torque;When the insertion torque value was no less than 20Ncm, the dental implant can acquire good primary stability.

Effect of PCF on the nonspecific immunity in mice / 中国海洋药物

Objective To investigate the effects of PCF on the nonspecific immunity of immunosuppressed mice.Methods The immunosuppressed mice were established by injection of dexamethasone(DEX) intraperitoneally.Effects of PCF on the nonspecific immunity were studied by the LDH assay and the phagocytizing CRBC method.Results The NK cells cytotoxicity and the phagocytosis of macrophages were enhanced(P

Immunomodulation of polypeptides from Chlamys farreri(PCF) in mice / 中国海洋药物

Objective To investigate the immunomodulation of PCF on the immunosuppressed mice. Methods The immunosuppressed model was established by injection of dexamethasone (DEX) intraperitoneally. Effects of PCF on the immunity were studied by the observation of morphology of immune organ, the analysis of T lymphocytes subsets and the measurement of lymphoproliferative ability. Results PCF could markedly improve the low immunoreaction of immunosuppressed mice caused by DEX. It was showed that the white pulp of spleen was enlarged, the quantity of T lymphocytes of the peripheral blood was increased and the response of lymphoproliferation to ConA was enhanced in the test group compared to those in the model group. Conclusion PCF had the abilities to up-regulate the immunity in vivo,which may be due to its influences on the peripheral mature immunocytes.