Clinical evaluation on aesthetic effect of custom pressable metal ceramic abutment for dental implant restoration in anterior zone / 华西口腔医学杂志

<p><b>UNLABELLED</b>OBJECTIVE To evaluate the aesthetic effect of restorations with custom pressable metal ceramic abutments for defective soft and hard tissue in the maxillary anterior zone.</p><p><b>METHODS</b>Fifty-two patients with missing anterior teeth in the maxillar were selected, who had problems such as exposure of abutment metal, excessively large angle deviation, excessively long ceramic crown and missing gingival papilla, affecting the aesthetic effect of implant denture. Custom pressable metal ceramic abutments were made on the conventional castable metal abutment surface and restored with all-ceramic crowns to overcome the blackness at the implant neck.</p><p><b>RESULTS</b>Clinical evaluation for aesthetic effects 3 and 6 months after the restorations were placed. In 63 restorations of 52 patients, the blackness at the implant neck were eliminated and the aesthetic effect were ideal. The gingival was in healthy condition, showing no further gingival retreat or inflammation around the implant denture.</p><p><b>CONCLUSION</b>Custom pressable metal ceramic abutments can effectively improve the aesthetic appearance of the implant denture in maxillary anterior zone.</p>

Accuracy of measurement of left ventricular volume and function in coronary heart disease with real-time threedimensional echocardiography / 中华超声影像学杂志

ObjectiveTo evaluate the accuracy of measurement of left ventricular(LV) volume and function in coronary heart disease(CHD) by real-time three-dimensional echocardiography(RT-3DE) using cardiac magnetic resonance imaging (CMRI).Methods LV end diastolic volume(EDV),LV end systolic volume(ESV) and LV ejection fraction(EF) were measured with RT-3DE in patients with CHD ( n =37) and in the control ( n =30).The results measured by RT 3DE were compared with those of CMRI.The diagnostic value of RT-3DE was evaluated using receiver operating characteristic(ROC) curve.Results Compared with that measured by CMRI,EDV,ESV and EF by RT 3DE( P ＞0.05) were almost similar as that in the control.Area under ROC curve of in EDV and ESV were 0.912 and 0.944 in the control.However,EDV determined by RT-3DE was smaller than that by CMRI( P ＜0.05) in CHD group.A difference (10.95 ± 31.26 ml) was existed in EDV between the two methods.ESV measured by RT-3DE was smaller than that calculated by CMRI( P ＞0.05) with a mean differance of (3.17 ± 16.42)ml in CHD group.EF by RT-3DE( P ＞0.05)was almost as same as that by CMRI in CHD group,with a mean difference of (1.54 ± 11.85)％.The area under ROC curve of EDV and ESV were 0.834 and 0.873 in CHD group and their diagnostic performance was moderate.ConclusionsMeasurment of LV volume and function by RT 3DE in control was more acurrate than that in CHD.In the cases of LV remodeling in patients with CHD,RT-3DE would underestimate the LV volume.

Optimization of fermentation medium for antagonistic actinomycetes F05 of American ginseng rust rot pathogen / 中国中药杂志

One strain F05 which had better antagonism for American ginseng rust rot was obtained from continuous cropping ground, and its fermentation had been preliminarily studied, more over the research can further determine the optimum composition. The single factor and uniform design were used to optimize the formulation medium. The identified formulation was powder of cornstalks 3.7206%, (NH4)2HPO4 0.5312%, MgSO4 0.0355%, K2HPO4 0.0400%. The bacteria number was 1.57 x 10(9) per milliliter culture solution.