Objective : To discuss the changes of serum lipoprotein phospholipase A2 (Lp - PLA2) and c-reactive protein (CRP) levels in atorvastat in treatment for the patients with periodontitis and hyperlipidemia. Methods : 148 patients with periodontitis and hyperlipidemia were involved, and divided into basic group (foundation treatment, 82 cases) and statin group (foundation treatment plus 20 mg atorvastatin treatment, 66 cases). 40 healthy cases from the medical center health personnel were selected as the healthy group. Attachment levels (AL), bleeding index (BI), serum total cholesterol (TC), triacylglycerol (TG), Lp - PLA2, and CRP levels were checked and compared before and after 6 months of treatment. Lp - PLA2 and CRP were checked by enzyme linked immunosorbent assay (ELISA), and their relationship were analyzed by the method of Pearson. Results: When the disease group were compared with the healthy group, the statistics were as follows: AL（3.92 ± 0.51 mm vs 0.42 ± 0.06 mm）, BI（2.81 ± 0.48 vs 0.34 ± 0.05）, TC（5.27 ± 0.83 mmol/L vs 4.02 ± 0.62 mmol/L）, TG（2.67 ± 0.41 mmol/L vs 0.93 ± 0.17 mmol/L）, Lp-PLA2（243.57 ± 58.71 μg/L vs 132.24 ± 34.27 μg/L）, CRP（9.72 ± 3.27 μg/L vs 3.21 ± 0.87 μg/L）, and the statistics of disease group were significantly higher than the healthy group with a significant difference (P< 0.05). When Statin group was compared with basis group, the statistics were as follows: AL（3.70 ± 0.10 mmvs 3.78 ± 0.11 mm）, BI（1.05 ± 0.28 vs 1.43 ± 0.32）, TC（3.82 ± 0.67 mmol/L vs 4.51 ± 0.71 mmol/L）, TG（1.30 ± 0.29 mmol/L vs 1.83 ± 0.34 mmol/L）, Lp-PLA2（157.43 ± 40.18 μg/L vs 199.43 ± 47.24 μg/L）, CRP（4.21 ± 3.02 μg/L vs 6.37 ± 3.28 μg/L）, and the statistics of statin group were lower than that in basis group with a significant difference (P< 0.05). Pearson analysis showed Lp-PLA2 and CRP levels were positively correlated (r = 0.672, P< 0.05). Conclusion It shows the changes of Lp- PLA2 and CRP level were related with the clinical conditions of periodontitis combined with hyperlipidemia, and atorvastatin therapy can effectively reduce the body's blood lipid levels, and improve the treatment effects of periodontitis combined with hyperlipidemia.

ObjectiveTo observe the effect of Nd∶YAG laser combined with enamel cement on dentine hypersensitiveness (DH).Methods120 DH cases (totally 182 teeth) were randomly divided into two groups. The experiment group (92 teeth) was treated with Nd∶YAG laser and enamel cement. The control group (90 teeth) was only treated with Nd∶YAG laser.ResultsEffective rates of the experiment group at the moment of treatment, 3 months and 6 months after treatment were 97.8%, 96.7% and 90.2 % respectively, and that of the control group were 95.6%, 91.1% and 84.4%. There was a significant difference between two groups (P<0.05).ConclusionNd∶YAG laser combined with enamel cement has an obvious effect on DH.