预成冠修复折裂磨牙

1 临床资料 1.1 一般情况 1995年～1998年,我科收治患有牙齿微裂、牙尖折裂、牙齿纵裂和横裂的共112例126颗磨牙。其中男83例,女29例;年龄20～66岁,平均46岁,主要集中在40～60岁。 1.2 患牙检查 患牙牙位:第一前磨牙上颌8颗,下颌3颗;第二前磨牙上颌9颗,下颌6颗;第一磨牙上颌32颗,下颌48颗;第二磨牙上颌7颗,下颌13颗。患牙类型:微裂牙16颗,牙尖折裂12颗,纵折牙69颗,横折裂牙29颗。     

隐裂牙129颗的全冠修复疗效观察

牙隐裂又称不完全牙折,是指发生在牙齿表面的细微不易发现的非生理性裂纹,常常累及下颌磨牙、上颌磨牙及上颌前磨牙。牙隐裂的裂纹常深入到牙本质结构,不及时治疗会导致牙髓炎、牙齿折裂直至被拔除。我们对129颗隐裂牙采用全冠修复的方法,取得满意的效果。现报告如下。     

后牙冠裂,冠根裂54例保存治疗体会

以往牙体纵裂至牙颈部以下或冠根联合折裂 ,常予以拔除。本组病例对 1 992年至 1 998年期间 54例 56牙折裂 ,施行保存治疗 ,取得较满意疗效 ,报告如下 :1　临床资料1 .1　一般情况54例患者中 ,男 3 2人 ,女 2 2人 ,年龄最小 2 6岁 ,最大 63岁 ,2 6～ 4 6岁 2 1人 ,4 6岁以上 3 3人。发生在上颌前磨牙 1 2颗 ,上颌第一、二磨牙 3 0颗 ,下颌第一、二磨牙 1 2颗 ,第三磨牙 2颗。1 .2　病例选择本组治疗已折裂的患牙 ,凡冠根折裂 ,或牙冠折裂暴露髓腔 ,均属本治疗范围 ,隐裂牙不收入本组。折裂牙剩余部分松动度大于 度 ,牙周状况不好者 ,一般不…     

后牙纵折保存治疗61例临床分析

随着口腔医学的发展 ,如何有效的保存治疗折裂牙已受到国内外学者的日益关注[1 ,2 ] 。本文总结我科自 1998～1999年采用钢丝环扎加全冠修复的方法治疗 6 1例后牙纵折 ,通过 2～ 4年的临床观察 ,成功率为 83.6 %,现报告如下 :1　资料与方法1.1　临床资料 :本组 6 1例为门诊有随访记录的患者 6 1颗牙 ,均为近远中向纵折 ,其中男 42例 ,女 19例 ,年龄 18～ 6 5岁 ,平均 41岁 ,以 35～ 45岁发病率最高。就诊时间 6小时～ 2个月 ,以 2～ 3天为最多 ,牙折情况 :前磨牙上颌 5颗、下颌 3颗 :第一磨牙上颌 31颗、下颌 12颗 ;第二磨牙上颌 3颗、下颌 …     

磨牙功能尖冠斜折与冠根纵裂牙的保存治疗

后牙牙髓治疗术后牙体组织相对削弱、变脆 ,加之牙体整体结构的破坏 ,还有一些隐裂的牙 ,当咬食过硬的食物时 ,牙体极易折裂 ,以纵裂为多 ,也有上颌第一磨牙腭尖及双尖牙的功能尖斜折。我们对６６例患者保存治疗１～６年随访效果良好 ,报道如下。１临床资料和方法１ １临床资料我科自１９９６年６月～２０００年９月临床就诊的无牙周袋及齿槽骨吸收的后牙。银汞合金充填术后 ,发生牙体功能尖斜折牙２１例 ,牙体纵裂４５例 ,男３９例 ,女２７例 ,年龄２７～６６岁。其中上颌第一磨牙２４例 ,上颌第二磨牙５例 ;下颌第一磨牙１７例 ,下颌第二…     

桩、核—全冠修复磨牙残冠的体会

我院近 2年来对磨牙 (包括前磨牙 )大部分龋损及冠根折、斜折的保存修复采用以根管治疗为基础 ,桩核成形 ,再加铸造金属全冠或金瓷全冠 ,恢复了患牙的形态及功能 ,取得了较为满意的效果。1　临床资料1.1　一般资料 :本组 38例 ,38颗牙 ,均为大部分龋损或冠斜折缺损患牙。男 15例占 39.5 % ,女 2 3例占60 .5 %。患者年龄 18～ 65岁 ,其中 4 0岁以下患者 2 9例占 76.3%。牙位 :38例中均为缺损在 1/ 3以上者。上颌前磨牙 8例 ,上颌磨牙 5例 ,下颌前磨牙 10例 ,下颌磨牙 15例。 1适应症 :前、后磨牙的大面积龋坏的患牙 ,经清除腐质、龈壁位于龈…     

活髓后牙隐裂致折裂后的保存修复及病因分析

目的探讨活髓牙隐裂引发折裂的致病因素及折裂后有效的治疗及修复方法。方法对74例82颗折裂活髓牙进行临床检查并分类。患牙经完善的根管治疗，配合金属全冠或烤瓷全冠修复。结果活髓牙隐裂、折裂好发于上颌磨牙．以第一磨牙最为多见；对患牙进行结扎固定，和彻底的牙髓牙周治疗及后期的全冠修复．可提高折裂牙齿的保存率。结论创伤耠是引发牙齿隐裂、折裂重要的致病因素，各种类型的牙齿折裂多能有效保存。     

69例牙齿隐裂的诊治

牙齿隐裂 ,临床并不少见 ,但早期确诊困难 ,不少病牙得不到及时有效地治疗 ,导致患牙的完全劈裂或拔除。本文总结此类病人 6 9例 ,详细分析了其临床表现与治疗。1　临床资料6 9例中男 37例 ,女 32例。年龄 :2 0～ 40岁 12人 ,41～6 0岁 5 3人 ,6 1岁以上 4人。上颌第一磨牙 46人 (占6 7% ) ;下颌第一磨牙 14人 (占 2 0 % ) ;上颌第一、第二双尖牙 9人 (占 13% )。一侧的 49人 (占 72 % ) ,双侧的 2 0人(占 2 8% )。病人均以牙痛而就诊 ,但牙痛的特点各有不同 ,与劈裂的部位与牙髓腔的距离 (深度 )有密切关系。患者大部分有咬硬食的病史 ,或…     

磨牙折裂的保存治疗（附87例临床分析）

在门诊工作中 ,经常可遇到因各种原因所致的牙冠折裂 ,以上下第一磨牙多见 ,第二磨牙次之 ,双尖牙也时有发生。传统的治疗方法是拔除纵裂牙或纵裂牙的活动部分。随着人们卫生保健意识的日益提高 ,保存病牙的要求也越来越强 ,我们自 1 995年以来对 87例磨牙折裂的患者进行了病牙保存治疗 ,收到了良好的效果 ,现报告如下。1　资料和方法1 .1　一般资料　本组磨牙牙体纵裂患者 87例 ,男6 9例 ,女 1 8例 ,年龄 3 5～ 6 8岁 ,其中上颌第一磨牙3 4例 ,第二磨牙 1 9例 ,第一双尖牙 3例 ,第二双尖牙 4例 ;下颌第一磨牙 2 1例 ,第二磨牙 5例 ,第二双…     

牙根折的临床分析

牙折通常根据折断部位分为冠折、根折和冠根联合牙折,其中冠折和冠根联合牙折临床症状明显,探查易发现,而根折部位隐蔽,临床表现往往不典型,给早期诊断及处理带来一定的困难。作者通过对１７例患者的１８个牙根折裂的临床观察,就牙根折的病因、早期诊断及处理进行讨论。１　临床资料１．１　一般资料　１７例患者中男１０例,女７例,年龄２５～６１岁。牙根折的牙位分布为：下颌第一磨牙１３根,上颌第一磨牙２根,下颌第二磨牙２根,下颌前磨牙１根。牙根折类型：纵裂型６个根,横折或斜折型１２个根。１．２　临床表现　１７例患者…     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

Objective：To investigate the gene expression of osteoprotegerin（OPG） and osteoclast differentiation factor（ODF） in the bone tissue of patients with hip fracture due to osteoporosis. Methods：OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers（over 50 years old） with hip fracture（Observer Group） and 30 cases of hip facture sufferers with no osteoporosis（Control group） were analyzed with the Semi-Quantitative RT-PCR method. Results：The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion：Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

Objective：To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas（SPTP）. Methods：Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin（HE） staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results：Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin（9/9 cases）, AAT（9/9 cases）, NSE（9/9 cases）, ACT（7/9 cases）, CK20（2/9 cases）, CgA（1/9 cases）, S-100（3/gcases）, PR（4/gcases）, Syn（3/9 cases） and CD56（5/9cases）, negative in CEA and ER. Conclusion：SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.     

SCREENING FOR A 21-CHROMOSOME ABNORMALITY IN PREIMPLANTED EMBRYOS OF ELDERLY WOMEN

Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.