钛基底对钛-瓷修复体表面色的影响

目的　探讨钛金属基底对钛 -瓷修复体表面色是否有明显影响。方法　制作 Dentsply DETREY- Carat瓷粉与钛 -瓷修复体标准试件 ,用 CS- 5型分光光度计测色 ,统计分析测定结果 ,并计算色差。结果　钛金属基底与Ni- Cr金属基底间颜色差异较大 ,但加不透明瓷及牙体瓷后 ,两组试件各色度指标统计学上无显著性差异 ,色差均小于 1.5。结论　钛金属基底对钛 -瓷修复体表面色无明显影响 ,Dentsply两种瓷粉同色瓷间无明显颜色差异。     

实验性犬侧颅底骨缺损修复材料的研究

为达到修复颅底骨硬脑膜缺损的目的，通过手术造成狗侧颅底骨及硬脑膜大面积缺损模型，利用自体阔筋膜或与细胞生长促进因子－骨形成蛋白进行修复，观察移植后不同时期所修复组织的成活及成骨的组织学变化情况，探讨了阔膜修复硬脑膜后组织学变化，证实生物膜与骨形成蛋白是一种理想的颅底缺损修复材料，为临床修复硬脑膜、颅底缺损等提供了参考。     

听神经瘤的再手术（附11例分析）

为进一步提高听神经瘤手术的临床疗效，对１５８例听神经手术后１１例再次手术患者进行临床分析，发现肿瘤大小，切除方式以及手术进路与临床症状复发密切相关，肿瘤越大，复发机会越多；大部切除；次全切除及全切除的复发再手术率分别是１９．４％、１３．２％和０，迷路后进路手术复发再手术率最高，达３３．３％，防止临床复发最根本的措施是术中尽量减少肿瘤残留，力争全切。为达此目的要求早期诊断，选择适当的手术进路，对不能     

对41例儿童旋毛虫病的临床观察

为了解儿童旋毛虫病的临床特征，对１９９２～１９９５年就诊的４１例儿童旋毛虫病进行分析。结果表明，患儿来自河南６个地区，主要因食猪肉馅饺子、烤羊肉串或食涮猪肉而感染。冬季为本病的高发季节。患儿平均年龄为８．８岁，男女之比为２．７１。长期发热和嗜酸性粒细胞增多为本病的主要表现，仅少数患儿有肌痛、胃肠道症状和皮疹。眼睑水肿仅见于发病早期。血清学检查对诊断本病有重要意义。预防本病的关键措施是加强肉检和改变不良的饮食习惯。     

Examination of the relation between periodontal health status and cardiovascular risk factors: serum total and high density lipoprotein cholesterol, C-reactive protein, and plasma fibrinogen

Using data from the Third National Health and Nutrition Examination Survey (1988-1994), the authors examined the relation between periodontal health and cardiovascular risk factors: serum total and high density lipoprotein cholesterol, C-reactive protein, and plasma fibrinogen. A total of 10,146 participants were included in the analyses of cholesterol and C-reactive protein and 4,461 in the analyses of fibrinogen. Periodontal health indicators included the gingival bleeding index, calculus index, and periodontal disease status (defined by pocket depth and attachment loss). While cholesterol and fibrinogen were analyzed as continuous variables, C-reactive protein was dichotomized into two levels. The results show a significant relation between indicators of poor periodontal status and increased C-reactive protein and fibrinogen. The association between periodontal status and total cholesterol level is much weaker. No consistent association between periodontal status and high density lipoprotein cholesterol was detectable. Similar patterns of association were observed for participants aged 17-54 years and those 55 years and older. In conclusion, this study suggests that total cholesterol, C-reactive protein, and fibrinogen are possible intermediate factors that may link periodontal disease to elevated cardiovascular risk.     

多囊卵巢综合征患者血清生长激素和泌乳素对左旋多巴反应的研究

目的：探讨多囊卵巢综合征（ＰＣＯＳ）患者生长激素（ＧＨ）和泌乳素（ＰＲＬ）异常分泌的机理。方法：对黄体生成素（ＬＨ）／卵泡刺激素（ＦＳＨ）≥３的１５例患者（Ｉ型组）、ＬＨ／ＦＳＨ＜３的１５例患者（Ⅱ型组）以及２０例月经周期正常妇女（对照组），行左旋多巴（Ｌ－ＤＡ，５００ｍｇ）兴奋下丘脑－垂体轴功能试验，观察３组ＧＨ和ＰＲＬ的浓度变化。结果：在基础状态下，Ⅰ、Ⅱ型组的ＧＨ较低（Ｐ＜０．０１）、ＰＲＬ较高（Ｉ型组，Ｐ＜０．０５）；Ｌ－ＤＡ兴奋试验后，Ⅰ、Ⅱ型组ＧＨ的升高程度和ＰＲＬ的下降程度均低于对照组。结论：ＰＣＯＳ的ＧＨ和ＰＲＬ异常分泌可能与其中枢ＤＡ活性不足有关。