Plastic bronchitis: resolution after heart transplantation

Plastic bronchitis (PB) is a rare cause of obstructive airway disease in patients who have undergone partially corrective surgery for congenital heart disease (CHD). The etiology of plastic bronchitis in such patients is ill-defined, and treatment is ineffective. We report resolution of PB and severe obstructive airway disease after heart transplantation in a patient with CHD.     

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目的评估藻酸盐印模浸泡消毒对所灌注超硬石膏模型尺寸精度和表面质量的影响。方法2006年2月至5月于南昌大学附属口腔医院修复科选用2种藻酸盐印模材料(Jeltrate和Heraplast NF)制取原始模型和不锈钢模具的印模,分别用2戊二醛、2.5三氯异氰尿酸、碘伏消毒液对以上2种藻酸盐印模材料浸泡消毒30min,灌注超硬石膏模型。测量原始模型及其所翻制的超硬石膏模型尺寸,计算其偏离原始模型的百分数;测量超硬石膏块表面粗糙度Ra值;用SPSS11.5统计软件进行方差分析和q检验(SNK法)。结果超硬石膏模型的长度和宽度变化率都不超过0.1,绝对数值均小于60μm;在所有样本中仅2.5三氯异氰尿酸浸泡消毒处理组表现为膨胀,其余各组均为收缩。2戊二醛浸泡消毒处理组与未消毒处理组的超硬石膏块的表面光滑程度接近,差别无统计意义;2.5三氯异氰尿酸处理组的表面光洁度最差,粗糙度Ra值最大。结论用2戊二醛、2.5三氯异氰尿酸、碘伏消毒液分别对2种藻酸盐印模(Jeltrate,HeraplastNF)浸泡30min,对模型的尺寸稳定性不会造成影响;藻酸盐印模材料的品牌不同和所用的消毒液的不同对超硬石膏块的表面粗糙度的影响不同,Jeltrate印模材料用2戊二醛或碘伏浸泡消毒均能获得很好的表面光洁度;2.5三氯异氰尿酸浸泡消毒对2种藻酸盐印模材料均会导致表面质量的降低。     

梯度旋转下降法修复单侧完全性唇裂的初步研究

目的探讨梯度旋转下降法修复单侧完全性唇裂的术后效果。方法分析85例单侧完全性唇腭裂患儿的术前，术后即刻以及术后一年的面部石膏模型唇部指标，同时比较这85例单侧完全性唇腭裂患儿术后一年的唇部指标与相似年龄的45例单纯不完全性腭裂患儿的唇部指标。结果在术后即刻虽然健患侧唇高、健患侧唇宽的差值减小，但其健患侧仍不协调。术后一年，健患侧唇高和健患侧唇宽都达到协调。与对照组进行比较，唇高在术后一年恢复到正常值，而唇宽在一年后无论是健侧还是患侧，仍然低于正常值。结论采用梯度旋转下降法修复单侧完全性唇裂可以达到一个很好的唇部美观效果。     

观测器在可摘局部义齿修复中的临床应用调查

目的：探讨在可摘局部义齿修复中应用观测器的重要性。方法：分别用观测法和目测法设计和制作可摘局部义齿，一年半后从支架的缺陷、口腔支持组织的生物学行为和义齿的功能三大方面评价两组义齿的临床疗效。结果：在义齿的固位，稳定，取戴，支持组织的炎症，患者的舒适度等方面，观测法组均优于目测法(P＜0．05)，两组在咀嚼功能方面无显著性差异(P＞0．05)。结论：在修复中应常规采用观测器来设计和制作可摘局部义齿。     

A Technique for Improved Maxillary Record Base Adaptation Through Controlled Polymerization of Light-Activated Dental Resins

A technique for the fabrication of light-activated maxillary record bases is described. The use of a segmental polymerization process provides improved palatal adaptation by minimizing the effects of polymerization shrinkage. Utilization of this technique results in record bases that are well adapted to the corresponding master casts.     

Evaluation of maxillary arch dimensions and palatal morphology in mouth-breathing children by using digital dental casts

Objective

The aim of the present study was to analyze the variations of maxillary arch size and of palatal morphology in subjects with prolonged mouth-breathing due to allergic rhinitis when compared with a control group with normal breathing pattern by using a three-dimensional analysis on digital casts.

Methods

26 Caucasian children (19 females and 7 males) with a mean age of 8.5 years (SD 1.6 years) were selected according to the following criteria: mouth-breathing pattern due to allergic rhinitis, early mixed dentition, skeletal Class I relationship and prepubertal stage of cervical vertebral maturation. The study group was compared with a control group of 17 nasal breathing subjects (9 females; 8 males, mean age 8.5 years SD 1.7 years). For each subject an initial dental cast was taken and the upper arch was scanned by using a tridimensional scanner. On each digital model linear measurements were performed to analyze maxillary arch dimensions and palatal morphology. Significant between-group differences were tested with the Student t-test (p < 0.05).

Results

the transverse dimension of the upper arch was significantly smaller in subjects of the study group thus confirming the influence of oral breathing on skeletal development with a significant constriction of the whole palate. The study group showed a higher and sharper palatal vault at the level of second deciduous molars and of first permanent molars.

Conclusions

Children with mouth-breathing pattern showed a significant constriction of the maxillary arch and an increased palatal height when compared with subjects with normal breathing pattern.     

不同类型肾小球疾病患者尿液中的蜡样管型分析

目的 探讨不同类型的肾小球疾病患者尿液中的蜡样管型.方法 尿沉渣离心镜检、计数管型数量并分类.结果 300例肾小球疾病患者中,共发现蜡样管型42例（14.0％）,其中急性感染后肾小球肾炎和肾淀粉样变管型比例最高,分别达到了45.5％和50.0％,局灶性节段性肾小球硬化和微小病变性肾病未检测到蜡样管型.结论 不同类型肾小球疾病患者中蜡样管型的数量不同.     

Periosteal and Intraosseous arteries of the human femur: Sphincter-arteries in the medullary cavity

Microanatomic injection and corrosion casts were made of 30 human femora of all ages to study the distribution of periosteal and intraosseous arteries; additionally, the marrow of 85 femora (also from all ages) was harvested for histological examination of these vessels. Examination of the diaphyseal and metaphyseal periosteal arteries revealed slight rarefication in density during the lifespan, whereas endosteal arteries were significantly changed in appearance. Two broad dense arterial trees (one located in the proximal half and the other in the distal half) with regular branching crowns were found in the fetal femur. By the second decade of life, the two vascular trees were reduced to an irregular, sparse structure that often showed glomuslike convolutions. Histologically, the intraosseous arteries often developed single or grouped axially oriented smooth muscle cells located in any of the layers of the arterial wall or were sometimes found included within the internal elastic lamina. In about 10% of the glomuslike convolutions, circumscribed intra-arterial cushions and sphincters of modified epithelioid smooth muscle cells were found. These structures may be part of arteriovenous anastomoses that serve to regulate blood pressure and may release humoral agents. The transformation of the arterial distribution pattern and the occurrence of arterial cushions and sphincters parallel the change of red haematopoetic marrow into yellow marrow. © 1993 Wiley-Liss, Inc.     

改良蛙式石膏固定治疗发育性髋脱位

目的总结用改良蛙式石膏固定方法治疗发育性髋脱位（DDH）的临床经验。方法采用内收肌切断、手法闭合复位、改良蛙式石膏固定方法治疗DDH患儿193例282髋,对患儿的临床资料进行回顾性分析。结果193例均获得随访,时间5年6个月～11年6个月,平均（8±3.2）年。参照周永德等发育性髋脱位疗效评价标准,239髋复位满意,远期优良率为84.8%。根据Salter评价标准,有10例发生股骨头缺血性坏死。结论改良蛙式石膏固定方法治疗DDH具有操作简单、住院时间缩短等优点,是一种有效的方法。固定后护理很重要。